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For other uses of the term, see Chaos Emerald (disambiguation). For other subjects named "Emerald", see Emerald.

Quotation1 The servers are the 7 Chaos. Chaos is power... Power enriched by the heart. The controller is the one that unifies the Chaos. Quotation2
Tikal, Sonic Adventure

The Chaos Emeralds (カオスエメラルド Kaosu Emerarudo?), also known as the miracle gems[2] or gems of miracles,[3] are objects in the Sonic the Hedgehog series. They are seven ancient emeralds and mystical relics tied to the Master Emerald that possess powerful properties and abilities. Those that hold the Chaos Emeralds can use their powers for a variety of things, such as initiating a super transformation, powering machines, and warping time and space. Anyone who combines all seven Chaos Emeralds can control ultimate power. Even when not including their mystical powers, the Chaos Emeralds' monetary value and beauty make them prime targets of treasure hunters who seek to make a mint.

Throughout history, the Chaos Emeralds have been the center of countless world-threatening conflicts and have been targeted by multiple factions on both earth and beyond, who seek them for their near-limitless powers. In the hands of villains they have been used for doomsday weapons and schemes for world domination, and in the hands of heroes they have been used to save the world. Over time, the Emeralds have been gathered multiple times, though they tend to scatter themselves after each usage and reset the hunt for them.[4]

In the early games of the series, the Chaos Emeralds were more like "bonus" items, but since Sonic Adventure, they have become necessary plot devices, and that trend has continued throughout the later games.

Description

Powers and traits

Vlc 2016-08-03 21-54-51-661

A Chaos Emerald teleporting an entire Gaia Temple.

Described as holding enough power to let their possessor control the whole world,[5] each Chaos Emerald is said to possess mystical properties and contain unlimited amounts of highly potent and powerful chaos energy that is said to give life to all things.[6][7][8] Even alone, their power is unmatched by pretty much anything else in the universe, except by the Power of the Stars and the Master Emerald;[9][10] just one Emerald can grant access to unlimited power[11] and radiates enough chaos energy to repel the incomplete Time Eater, power an entire Gaia Temple, and destabilize the crust of a planet.[12] It is often said that those whom combine all seven Chaos Emeralds will gain ultimate power and unlimited energy.[13][14] Accordingly, those who knows how to use them can do just about anything with their power.[15]

The power of each Chaos Emerald is described as being able to “transform thoughts into power”;[16] by "sensing" people's thoughts, the Chaos Emeralds can generate the chaos energy they contain which make them everlasting sources of energy. Oppositely, the Emeralds can absorb the chaos energy exposed to them.[17] By focusing one's thoughts, the Emeralds can even bend reality to achieve certain feats,[18] such as showing fabricated visions, performing rituals, reviving the recently deceased and even make them move on their own. Additionally, each Emerald can float in midair on its own power.[13]

Supertransformsonic

A Super State, a form granted by the Chaos Emeralds.

The Chaos Emeralds' power can be harnessed with or without physical contact, and can be done so over great distances. When harnessed by living beings, they allow different Chaos Powers, such as Chaos Control, and can occasionally enhance the wielder's abilities. Harnessing all seven Chaos Emeralds will bestow a person with a Super State, a form that grants flight, invulnerability, different Chaos Powers, and increased innate talents. Additionally, a Super State user can transfer their power to others to bestow them with a Super State of their own. However, Super States generally do not last long, as they consume tremendous amounts of energy.[19] The Emeralds' power can also be harnessed by machinery, such as the Eclipse Cannon, for the purpose of powering them. Potentially, their power can also be used for nuclear or laser-based weaponry.[20]

Drained Chaos Emerald Runners

A Chaos Emerald drained of its power.

The type of chaos energy the Emeralds produce is based on thoughts. Positive thoughts, such as friendship and caring, generate positive energies and negative thoughts, such as anger and hatred, generate negative energies.[21][22] If the Chaos Emeralds are either absent of their negative energies or all of their energies, they become inert and lose their lustre. The only known ways to restore them from this state is through peoples' thoughts, the Gaia Temples, or by returning their energy. The Chaos Emeralds can as well take on other powers, like when the Overmind psychically treated them into Great Emeralds which boosted their psychic powers, or potentially be enhanced.

The Chaos Emeralds amplify their own power the more of them there are used in the process.[23] This is mainly demonstrated with the Eclipse Cannon: with five Emeralds it could destroy a large city, with six Emeralds it could blow up half of the moon and with all seven it could destroy planets and pierce stars. Like the Master Emerald, the Chaos Emeralds also appear to possess some form of sentience, like when they remained stable in spite of the conditions in an attempt to help Sonic and Tails get home from Blaze's world.[24] Supposedly, this sentience also explains the Emeralds' tendency to show up where they are most needed.[25][26][27]

As demonstrated on a few occasions, the Chaos Emeralds are not indestructible, and can be shattered into Emerald Shards that retain the Chaos Emeralds' chaos energy. However, like the Master Emerald, they can easily be repaired if all their shards are brought back together again.

Each Chaos Emerald is linked to each other and act like magnets that can attract each other. This for example allowed Tails to pinpoint Dr. Eggman's location on Space Colony ARK because he had the rest of the Chaos Emeralds in his possession.[28] The Chaos Emeralds are likewise linked to the Sol Emeralds, their inter-dimensional counterparts from Blaze's world, with the two sets of Emeralds having been described as the North and South on a magnet.[24][29] This makes both sets of Emeralds capable of attracting and repelling each other.[24][29] Also, when in close proximity, the two sets of Emeralds call out to each other,[29] which will generate power of cataclysmic proportions unless those wielding the Emeralds knows how to use them or the Emeralds wills themselves to remain stable.[24][29][30]

After using all seven Chaos Emeralds, they will usually scatter themselves,[4] meaning that they can only be used for one purpose together before disappearing again. While they can end up anywhere in the world, they quite often end up in Special Stages, which are strange alternate dimensions.

Background

The Chaos Emeralds' background is shrouded in mystery and no one knows where they come from.[13] They have been around for several millennia, even predating the Master Emerald which has existed since before recorded time,[13][31] and have played a large role in numerous events. The Chaos Emeralds' power has been passed down into legend, and the power of all seven brought together has been described from the emergence of a mysterious power to no less than a miracle.[16][32]

Throughout history, civilizations have sought to harness the Chaos Emeralds' power: according to legend, the ancient civilization on West Side Island used the Chaos Emeralds for the advancement of their society and achieved great prosperity.[33] Other civilizations that knew about the Emeralds included the Babylonians and the Black Arms, the latter who have visited Earth for at least 2,000 years. The Emeralds also have a connection to the Gaia Temples which are more or less than ten thousands of years old. There are as well numerous locations that are said to have held the Chaos Emeralds at one point (some of which claim to have done so since ancient times), including Cocoa Island,[34] Angel Island,[35] Flicky Island,[36] West Side Island,[33] and South Island.[6] It is unknown how valid these legends are, given how some contradict others regarding the Emeralds' resting place, although this might be due to the Emeralds' tendency to appear wherever they are needed.

It is said that in the far ancient past, the Chaos Emeralds would be used for evil purposes. One such instance was when West Side Island's prosperity lead to avarice over the course of a single night when some people wanted the Emeralds for evil, sparking a conflict so great that the gods had to intervene and seal the Chaos Emeralds on the island.[33] Witnessing this misuse, the gods created the Master Emerald to balance out the Chaos Emeralds' power[31] and equipped the gem with the ability to nullify and control them. An ancient mantra associated with the Emeralds would eventually arise, explaining their connection and abilities.

Chaosemeraldspast

The Chaos Emeralds at the Emerald Shrine about 4,000 years ago.

Over 4,000 years ago, the Chaos Emeralds and the Master Emerald resided in the Altar of the Emeralds, a shrine in the outskirts of the Mystic Ruins. There, each Emerald rested on one of seven stone pillars that surrounded the Master Emerald which lay in the center of the altar. Back then, the Emeralds were known only as "the Seven Emeralds" that could grant wishes.[37] In that shrine resided a colony of Chao. These peaceful creatures and their shrine were protected by the water-based deity Chaos, the guardian god of the Chao.[9][38]

Around 4,000 years ago, ancient echidna civilizations knew of the Chaos Emeralds and sought their secrets.[13] The Nocturnus Clan were known to have been experimenting with the Chaos Emeralds as a part of the creation of the Gizoid,[13] while the Knuckles Clan revered the Chaos Emeralds as sacred objects.[39] Around this time, Tikal, the daughter of chief Pachacamac of the Knuckles Clan and a friend to the Chao and Chaos, was allowed into the shrine where she could behold the Chaos Emeralds.

As the Knuckles Clan faced extermination at the hands of the Nocturnus Clan, chief Pachacamac and his followers launched a raid on the altar to take the Emeralds and gain undisputed power. Tikal stood between them however, begging her people to leave the creatures and the Emeralds alone. However, her pleas fell on deaf ears, and the men trampled over Tikal and the Chao alike in the process, prompting Chaos to appear. In a fit of rage over the harm brought to its friends, it used the Chaos Emeralds to become Perfect Chaos and wiped out the clan's civilization in vengeance, before it was sealed in the Master Emerald by Tikal. After this event, the Emeralds went missing and were dubbed the "Chaos Emeralds" due to their association with Chaos.[38]

Over fifty years prior to Shadow the Hedgehog, the Chaos Emeralds were researched by Prof. Gerald Robotnik onboard Space Colony ARK as a part of Project Shadow. These research results led to the creation of the Chaos Drives, small capsules containing chaos energy.[40] During the experimentations on the Chaos Emeralds, Prof. Gerald also discovered that the Gizoid he had discovered reacted to the Emeralds.[41] After a Chaos Emerald got installed into the Gizoid however, the robot went on a rampage that destroyed most of the ARK before it was subdued.[42]

Game appearances

Sonic the Hedgehog (16-bit)

ChaosEmeraldsSonic1

The six Chaos Emeralds, as depicted in Sonic the Hedgehog.

Quotation1 Chaos Emeralds: These come in six different colors: yellow, pink, blue, green, red and white. You'll find one in each Secret Zone. Collect all of these! Quotation2
— United States instruction booklet, Sonic the Hedgehog[43]

In the original Sonic the Hedgehog, the Chaos Emeralds were lying dormant within distortions created on South Island, an island that moves around on the sea. However, no one knew how to obtain them. Seeking the Emeralds, presumably for research into nuclear power and various laser-based weaponry for conquering the world, Dr. Robotnik came to South Island with his gang, determined to dig up the entire island in his search for the Chaos Emeralds.[6] However, Robotnik's nemesis, Sonic the Hedgehog, ended up obtaining the Emeralds first. After foiling Robotnik's operations, Sonic brought the Chaos Emeralds to Green Hill Zone. There, the Emeralds started to hover and rotate in the mid-air. After that, the Emeralds disappeared in a flash, with new kinds of flowers having appeared around the Green Hill Zone, although Sonic was initially baffled by this event.

In this game, there are only six Chaos Emeralds, each one in a different color: yellow, pink, blue, green, red and white. In terms of design, they are shaped like octagons (from the 2D viewpoint of the player) with a flat octagon-shaped top facet.

Come to papa

A Chaos Emerald in a Special Zone in Sonic the Hedgehog.

In gameplay, the player will obtain a Chaos Emerald whenever they clear one of the game's six Special Zones. After getting the six Chaos Emeralds and beating the final boss, the player gets the good ending of the game. In the bad ending (which the player receives if they do not get all six Chaos Emeralds), after the credits sequence, Robotnik is seen throwing Chaos Emeralds around in his hands with the words "Try Again" written below. The Emeralds Robotnik is seen throwing around in that scene depends on which Chaos Emeralds the player was not able to get before the ending.

Sonic the Hedgehog (8-bit)

ChaosEmeraldsSonic18bit

The six Chaos Emeralds in the 8-bit version of Sonic the Hedgehog.

Quotation1 Chaos Emeralds: These appear in every zone. Collect all six and see the real ending! Quotation2
— United States instruction booklet, Sonic the Hedgehog (Sega Game Gear)[44]

In the 8-bit version of Sonic the Hedgehog, the Chaos Emeralds lay dormant on South Island. Seeking the Emeralds, presumably for research into nuclear power and various laser-based weaponry for conquering the world, Dr. Robotnik came to South Island to find them.[45] However, Robotnik's nemesis, Sonic the Hedgehog, ended up obtaining the Emeralds first. After defeating Robotnik when he tried to escape, Sonic was trekking through Green Hill when the Chaos Emeralds started to glow in his hands before flying into the sky. There, they circled around South island and disposed of the pollutant above the island caused by the Scrap Brain Zone before vanishing.

In this game, there are only six Chaos Emeralds. Also, instead of each Emerald being a different color, they are all light blue due to hardware limitations. In terms of design, they are shaped like octagons (from the 2D viewpoint of the player) with a flat octagon-shaped top facet.

Green-Hill-Zone-Chaos-Emerald

Sonic finding a Chaos Emerald in Green Hill Zone.

In gameplay, the Chaos Emeralds are not found inside the game's different Bonus Stages, but are instead scattered in certain Acts of each zone. Each zone holds one Emerald. Each Emerald is also worth 20,000 points at the end of the game score tally. If the player collects all six Chaos Emeralds, they will receive the game's real ending after defeating the final boss of the game.

Sonic the Hedgehog 2 (16-bit)

Sonic2allchaosemeralds

All seven Chaos Emeralds collected in the 16-bit version of Sonic the Hedgehog 2.

In the 16-bit version of Sonic the Hedgehog 2, the Chaos Emeralds resided on West Side Island, an island whose civilization had used the Chaos Emeralds in ancient times to achieve great prosperity, only for the Emeralds to cause the civilization's downfall over a single night when they were used for evil, forcing the gods to seal the Emeralds on the island. After following Sonic to West Side Island, Dr. Robotnik had his Badniks dig all over the island for the Chaos Emeralds, which he planned to use to complete his ultimate weapon: the Death Egg.[33] However, Sonic (and his new sidekick Tails) managed to get the Chaos Emeralds first. Later, after making it onboard the Death Egg and causing it to self-destruct, Sonic used the Chaos Emeralds to become Super Sonic and fly to safety as the Death Egg exploded.

In this game, there are seven Chaos Emeralds in total, a number of which would be used by the majority of the subsequent Sonic games. However, compared to how they looked in Sonic the Hedgehog, the Emeralds are slightly different this time around: they are now hexagon-shaped rather than octagon-shaped (from the 2D viewpoint of the player), with a flat hexagon-shaped top facet. The Emeralds also each have a different color: yellow, pink, light blue, green, red, white and purple.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. However, the Emeralds are not shared between the characters, meaning that each character will have to attain their own set of seven Chaos Emeralds in their gameplay. After collecting all seven Chaos Emeralds as Sonic, Sonic will be able to turn into Super Sonic (who has been featured in many games since then) in regular Zones. Collecting all the Emeralds will unlock the good ending(s) of the game as well.

If the game is locked on to Sonic & Knuckles (thereby forming Knuckles the Echidna in Sonic the Hedgehog 2), Knuckles can turn into Super Knuckles in regular Zones after getting all the Chaos Emeralds as well.

Sonic the Hedgehog 2 (8-bit)

Quotation1 Chaos Emerald: Search for these in the Zones. Collect all six to rescue Tails and see the real ending! Quotation2
— United States instruction booklet, Sonic the Hedgehog 2 (Sega Game Gear)[46]

In the 8-bit version of Sonic the Hedgehog 2, the Chaos Emeralds were located on South Island. After learning that Tails had been kidnapped by Dr. Robotnik and brought to a place called Crystal Egg, which could only be entered using the Chaos Emeralds, Sonic set out to find the Chaos Emeralds and rescue Tails.[47] Eventually, Sonic retrieved the Chaos Emeralds, the last of which was in the possession of Silver Sonic, thus allowing him to enter the Crystal Egg Zone and rescue Tails after defeating Robotnik.

In this game, there are only six Chaos Emeralds, each one in a different color: blue, yellow, purple, white, red and green. In terms of design, they are shaped like octagons (from the 2D viewpoint of the player) with a flat octagon-shaped top facet.

Sonic2MasterSystemChaosEmerald

A Chaos Emerald in Gimmick Mt. Zone in the 8-bit version of Sonic the Hedgehog 2.

In gameplay, the Chaos Emeralds are not found in some kind of extra Zone. Instead, they are hidden in the regular Zones, like in the 8-bit version of Sonic the Hedgehog. Finding them can be tricky, however, as they are usually lying around on some remote, isolated platform that requires careful maneuvering to reach. There is one Chaos Emerald in each of the first five Zones, and the sixth is won after defeating Silver Sonic. For each Emerald collected, the player is rewarded with a Continue. Collecting all six Emeralds allows the player access to Crystal Egg Zone; clearing it will reward the player with the real ending of the game. If the player does not have all the Emeralds after defeating Silver Sonic, however, the game ends here and the player receives the game's bad ending.

Sonic Chaos

ChaosEmeraldSonicChaos

FIve of the Chaos Emeralds in Sonic Chaos.

In Sonic Chaos, the Chaos Emeralds rested on South Island, which was able to stay afloat on the sea thanks to the Emeralds' power. Setting his sights on the Chaos Emeralds once more, Dr. Robotnik managed to steal one of them. As a result of Robotnik's tampering however, the remaining Chaos Emeralds got scattered, causing South Island to slowly sink into the sea. To save the island, Sonic and Tails set out to recover the Chaos Emeralds.[48] After many troubles, the heroic duo managed to recover all the scattered Chaos Emeralds. Then, after defeating Robotnik, Sonic collected the Emerald Robotnik had stolen when the mad scientist dropped it during his escape.

In this game, there are only six Chaos Emeralds, each one in a different color: red, yellow, blue, green, white and gray. In terms of design, they are shaped like octagons (from the 2D viewpoint of the player) with a flat square-shaped top facet.

SonicChaosChaosEmerald

Sonic finding the yellow Chaos Emerald at the end of a Special Stage in Sonic Chaos.

In gameplay, five of the Chaos Emeralds can be found in the Special Stages. However, only Sonic can enter the Special Stages and get the Emeralds; Tails cannot enter the special stage, and hence cannot collect any Chaos Emeralds (he merely gets a 1-Up when he collects the one hundred Rings required to be transported to the Special Stage). Once inside a Special Stage, the player must find and collect the Chaos Emerald that is hidden within the stage. The sixth and final Chaos Emerald is obtained after defeating the Laser Walker in Electric Egg Zone, but only if the player has obtained the other five Chaos Emeralds before-handed. Collecting all six Emeralds will unlock the game's good ending. Fail to collect all the Emeralds, and the game's bad ending will appear after clearing the final boss.

Sonic the Hedgehog Spinball

ChaosEmeraldSonicSpinball

Sonic obtaining a Chaos Emerald in Sonic the Hedgehog Spinball.

Quotation1 Chaos Emeralds stabilize the Mt. Mobius volcano on which the Veg-O-Fortress stands. Without the Emeralds, a massive eruption would blow the Fortress to pieces!

You must spin, bounce and bump through the Pinball Machines to snatch all the Chaos Emeralds on each of four levels. When you've collected all the Emeralds, the Veg-O-Fortress will explode!
Quotation2

— United States instruction booklet, Sonic the Hedgehog Spinball (Sega Mega Drive)[49]

In both the 16-bit and 8-bit version of Sonic the Hedgehog Spinball, Dr. Robotnik used several Chaos Emeralds to stabilize the Mt. Mobius volcano on which his Veg-O-Fortress stood; without the Emeralds, the volcano would erupt and destroy the Veg-O-Fortress.[49] Seeking to bring down the Veg-O-Fortress and end its robotizating operations, Sonic ventured through Mt. Mobius and collected all the Emeralds, thus ensuring the Veg-O-Fortress's demise.

ChaosEmeraldSpinball8Bit

A Chaos Emerald in the 8-bit version of Sonic the Hedgehog Spinball.

In both the 16-bit and 8-bit version of Sonic the Hedgehog Spinball, the Chaos Emeralds are all blue. Like in Sonic the Hedgehog 2, the Emeralds are also hexagon-shaped (from the 2D viewpoint of the player), with a flat hexagon-shaped top facet. Both versions of the game also feature a total of sixteen Chaos Emeralds. The reason for the large number of Emeralds that appear and their uniform blue coloration are not explained. However, because both Sonic the Hedgehog Spinball titles use elements from Archie Comics' Sonic the Hedgehog comic series, it might be possible that the games' Chaos Emeralds were inspired by the comic's interpretation of the Chaos Emeralds, which were incredibly numerous and all green-colored back in the old days.

In gameplay on both versions of the game, the Chaos Emeralds are scattered around each level: three Emeralds are hidden in Level 1 and 2, and five Emeralds are hidden in Level 3 and 4. It is the player's objective to find every Chaos Emerald in each level, which requires doing certain precise pinball tricks. Obtaining a Chaos Emerald will award the player with 500.000 points. Once all Emeralds in a level have been found, the player can enter the arena where the level's boss can be fought.

Sonic the Hedgehog 3 & Knuckles

Sonic the Hedgehog 3

ChaosEmeraldsSonic3

All the Chaos Emeralds collected in Sonic the Hedgehog 3.

In Sonic the Hedgehog 3, it is stated that the Chaos Emeralds were residing on Angel Island prior to the ending of Sonic the Hedgehog 2. There, they were guarded by Knuckles the Echidna, the guardian of Angel Island and the Master Emerald. The Emeralds were also said to control the power of the "pillar" in the depths of Angel Island. On the day the Death Egg crashed into Angel Island (due to Sonic's actions) however, the Chaos Emeralds suddenly flashed and began vibrating more and more abnormally. As the vibrations reached their climax, the Chaos Emeralds gave off a loud flash and disappeared, just as the Death Egg hit Angel Island.[35] Days later, Sonic and Tails arrived at Angel Island, with the seven Chaos Emeralds in their possession, to investigate the situation. As they neared Angel Island, Sonic used the Emeralds to enter his Super State and stormed the island. However, on the island, Knuckles, who had been tricked by Robotnik into believing that Sonic was a thief out to steal the Master Emerald, ambushed Super Sonic and made him lose all seven Chaos Emeralds, which Knuckles then stole and hid away around the island. Retrieving the Chaos Emeralds, Sonic eventually used them to turn into Super Sonic after making the Death Egg crash again when it tried to take off.

In this game, the Chaos Emeralds were "finalized" as seven brilliant cut gemstones in the following colors: red, green, blue, turquoise, purple, yellow, and white. This design would be use consistently in later games.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. However, the Emeralds are not shared between the characters, meaning that each character will have to attain their own set of seven Chaos Emeralds in their gameplay. After collecting all seven Chaos Emeralds as Sonic, Sonic can turn into Super Sonic in regular Zones. Collecting all of the Emeralds will also unlock the good ending(s) of the game. If the player fails to get all the Emeralds, they get the game's bad ending. Also, after the credits sequence in the bad ending, Knuckles is seen throwing Chaos Emeralds up and down in his hand with the words "Try Again" written below. The Emeralds Knuckles is seen throwing around in that scene depends on which Chaos Emeralds the player was not able to get before the ending.

By locking Sonic the Hedgehog 3 onto Sonic & Knuckles, the player can play Sonic the Hedgehog 3 & Knuckles. In this game, the player can upgrade the Chaos Emeralds to Super Emeralds. To do this, the player has to enter any Sonic & Knuckles Zone with all seven Chaos Emeralds, and jump into a flashing Super Ring. These transport the character to the Hidden Palace Zone, where the Chaos Emeralds are turned into gray Super Emeralds. The player can then jump onto one of these Super Emeralds to enter a Special Stage where they can earn Super Emeralds. After this sequence, the player is unable to use their Super State again, but is able to still complete The Doomsday Zone and finish the game with just the Chaos Emeralds. Earning all Super Emeralds lets Sonic turn into Hyper Sonic, Tails into Super Tails, and Knuckles into Hyper Knuckles.

Sonic & Knuckles

In Sonic & Knuckles, both Sonic and Knuckles would hunt the Chaos Emeralds yet again. When Dr. Robotnik tried making his escape with the Master Emerald after his Great Eggman Robo was defeated by Sonic and Tails, Sonic used the Chaos Emeralds he had collected before-handed to turn into Super Sonic and pursue Robotnik into space where he defeated the doctor and retrieved the Master Emerald. Knuckles would later collect the Chaos Emeralds during his hunt for an Eggrobo that stole the Master Emerald. When the Master Emerald stood to be lost when Sky Sanctuary Zone collapsed, Knuckles used the Chaos Emeralds to become Super Knuckles, which allowed him to retrieve the Master Emerald while Sonic swooped in in the Tornado and rescued Knuckles.

ChaosEmeraldSonic&KnucklesSpecialStage

Knuckles about to obtain a Chaos Emerald from a Special Stage in Sonic & Knuckles.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. However, the Emeralds are not shared between the characters, meaning that each character will have to attain their own set of seven Chaos Emeralds in their gameplay. After collecting all seven Chaos Emeralds as Sonic or Knuckles, the player can turn into Super Sonic or Super Knuckles in regular Zones. By collecting all seven Chaos Emeralds, the player will also unlock the good ending(s) of the game. In Sonic's case, collecting all seven Emeralds also allows the player to enter The Doomsday Zone after defeating the Great Eggman Robo in Death Egg Zone. If the player fails to get all the Emeralds however, they will receive the game's bad ending(s).

By locking Sonic the Hedgehog 3 onto Sonic & Knuckles, the player can play Sonic the Hedgehog 3 & Knuckles. In this game, the player can upgrade the Chaos Emeralds to Super Emeralds. To do this, the player has to enter any Sonic & Knuckles Zone with all seven Chaos Emeralds, and jump into a flashing Super Ring. These transport the character to the Hidden Palace Zone, where the Chaos Emeralds are turned into gray Super Emeralds. The player can then jump onto one of these Super Emeralds to enter a Special Stage where they can earn Super Emeralds. After this sequence, the player is unable to use their Super State again, but is able to still complete The Doomsday Zone and finish the game with just the Chaos Emeralds. Earning all Super Emeralds lets Sonic turn into Hyper Sonic, Tails into Super Tails, and Knuckles into Hyper Knuckles.

Sonic Drift series

Sonic Drift

Ghaos GP Drift

A Chaos Emerald in Sonic Drift.

In Sonic Drift, the Chaos Emeralds make a small appearance. In this game, they denote the difficulty of the racing competitions in the game's Chaos GP. The easy races are denoted as Green, the medium-difficult as Yellow, and the hardest as Red.

In this game, the Chaos Emeralds are depicted as hexagon-shaped (from the 2D viewpoint of the player), with a flat hexagon-shaped top facet, like in Sonic the Hedgehog 2 and Sonic the Hedgehog Spinball.

Sonic Drift 2

Chaos GP Drift 2

Chaos Emeralds in Sonic Drift 2.

In Sonic Drift 2, the Chaos Emeralds, like in Sonic Drift, are used to denote the difficulty of the racing competitions in the game's Chaos GP. The easy races are denoted as Purple, the medium-difficult as White, and the hardest as Blue. They are also shaped like the Chaos Emeralds depicted in Sonic Drift, making them hexagon-shaped (from the 2D viewpoint of the player), with a flat hexagon-shaped top facet.

Sonic the Hedgehog's Gameworld

In Sonic the Hedgehog's Gameworld, a Chaos Emerald was hidden on each floor of Dr. Robotnik's five-story Gameworld, an amusement park-like tower built in Robotnik's own image. Seeking the Chaos Emeralds, Sonic, Tails and Amy had to clear all the minigames on each floor to retrieve them.[50] Making it to the roof of Gameworld, Sonic and co. got away with the Chaos Emeralds after beating Robotnik's final challenge.

In this game, only five Chaos Emeralds are seen. In terms of design, the Emeralds are hexagon-shaped (from the 2D viewpoint of the player), with a flat hexagon-shaped top facet. They also come in the following colors: white, yellow, green, red and orange.

In gameplay, the Chaos Emeralds appear in the last minigame: Diamond Race. Here, the player starts out on the rooftop and must retreat through Gameworld's four levels in a race against Robotnik to find the Chaos Emeralds hidden on each floor. Once all five Emeralds have been located, the character holding the most wins the game.

Sonic the Hedgehog Triple Trouble

ChaosEmeraldsTripleTrouble

Five of the Chaos Emeralds in Sonic the Hedgehog Triple Trouble.

In Sonic the Hedgehog Triple Trouble, Dr. Robotnik managed to collect all the Chaos Emeralds in secret. However, when Robotnik made a mistake during the testing of his ultimate weapon, an accident occurred that blew all the Chaos Emeralds away. While Robotnik managed to find one of the Emeralds, he had no clue where to find the rest. Still, he was determined to find them. Meanwhile, having learned of Robotnik's accident, Sonic and Tails set out to get the Chaos Emeralds before the doctor.[51] At the same time, Knuckles, who had been convinced by Robotnik that Sonic wanted the Chaos Emeralds for world domination, found the Chaos Emeralds and hid them away in subspace.[52][53] Also seeking the Chaos Emeralds this time was Nack the Weasel, a rogue treasure hunter.[51] Ultimately, Sonic and Tails managed to retrieve all the scattered Chaos Emeralds. Then, when Robotnik tried to make his escape after his defeat in Atomic Destroyer Zone, Sonic and Tails robbed the doctor of the final Chaos Emerald.

In this game, there are only six Chaos Emeralds, each one in a different color: blue, red, yellow, white, orange, and light yellow. In terms of design, they are shaped like hexagons (from the 2D viewpoint of the player) with a flat hexagon-shaped top facet.

SttEmeraldRoom

Sonic in front of the blue Chaos Emerald at the end of a Special Stage in Sonic the Hedgehog Triple Trouble.

In gameplay, like in Sonic Chaos, five of the Chaos Emeralds can be found in the Special Stages. This time however, both Sonic and Tails can collect them. Once inside a Special Stage, the player must clear the Special Stage and then defeat Nack in a boss battle before they can obtain the Emerald. The sixth and final Chaos Emerald is obtained after defeating the final boss in Atomic Destroyer Zone. Collecting all six Emeralds will unlock the game's good ending. In the bad ending (which the player receives if they do not get all six Chaos Emeralds), Nack can be seen, laughing, before tripping and dropping the Chaos Emeralds when he tries to run away, with the words "Try Again" appearing on the screen afterward. The Emeralds Nack drops in that scene depends on which Chaos Emeralds the player was not able to get before the ending.

Tails Adventure

Quotation1 Chaos Emerald: There are six Chaos Emeralds: Blue, Green, Purple, Red, White, and Yellow. Each time you find one, your flying time is permanently extended, and you receive extra Rings. You do not select these as items to take with you on an adventure. Quotation2
— United States instruction booklet, Tails Adventure[54]

In Tails Adventure (which take place before Tails met Sonic), the Chaos Emeralds were located on Cocoa Island, an island on which the Chaos Emeralds were said to have laid dormant on since ancient times. Seeking the Chaos Emeralds for world domination, the Battle Kukku Empire, led by the Great Battle Kukku, came to Cocoa Island. Living on the island, however, was Tails, who decided to stop the Great Battle Kukku's ambitions.[34] Over the course of his adventure, Tails found the Chaos Emeralds and benefited from their powers.

In this game, there are only six Chaos Emeralds, which are colored (in order of appearance) red, green, purple, white, blue, and yellow. Also, rather than appearing as gems, the Emeralds are depicted as blue and orange boxes.

In gameplay, the Chaos Emeralds are scattered across the levels. Obtaining a Chaos Emerald will increase Tails' maximum Ring count by ten Rings and his Flight Gauge by a few seconds. If the player have five Emeralds and procure the sixth, Tails' maximum Ring count shoots up to its maximum of ninety-nine (note that Emeralds cannot be equipped but are always active).

Sonic Labyrinth

Sonic-Labyrinth-Story-III

Dr. Robotnik holding the Chaos Emeralds in Sonic Labyrinth.

In Sonic Labyrinth, Dr. Robotnik stole the Chaos Emeralds from South Island and used their power to craft the irremovable Speed Down Boots which he tricked Sonic into wearing, thus stripping the hedgehog of his speed and agility. With the Chaos Emeralds in hand, Robotnik boasted across South Island that the only thing that could get the Speed Down Boots off Sonic were the Chaos Emeralds' power. In response, Sonic headed into Robotnik's newly constructed super labyrinth to get the Chaos Emeralds.[55] After many trials, Sonic recovered the Chaos Emeralds, the last of which he got from Robotnik himself when the mad doctor dropped it during his escape from Sonic, and regained his speed.

In this game, there are six Chaos Emeralds in total, although only five of them are seen. These five Emeralds are colored (in order of appearance) blue, red, orange, dark blue and green. Also, the first three Emeralds are depicted as semi-table cut gemstones while the last two are depicted as point cut gemstones.

Sonic with a Chaos Emerald in Sonic Labyrinth

Sonic holding a Chaos Emerald in the Labyrinth of the Sea.

In gameplay, the player will obtain a Chaos Emerald from each of the game's four bosses after defeating them. The fifth Chaos Emerald on the other hand is only obtained after the player clears the hidden Bonus Stage (although no indication of the Chaos Emerald being obtained is given). The sixth and final Chaos Emerald is obtained from Robotnik after defeating the game's final boss. Collecting all six Chaos Emeralds will unlock the game's good ending. Collect any less than that and the game's bad ending will appear instead.

Sonic the Fighters

ChaosEmeraldSonictheFighter

The Chaos Emeralds in Sonic the Fighters.

In Sonic the Fighters, the Chaos Emeralds were being guarded separately by Sonic, Tails, Knuckles, Amy, Espio, Bark, and Bean so they could not be misused by Dr. Robotnik. However, Fang the Sniper managed to steal one of them. When the world then came under the threat of the Death Egg II, Sonic planned to use the Chaos Emeralds to power the Lunar Fox, a single-seat spaceship Tails had invented which required all the Chaos Emeralds as a power source, to go to the Death Egg II. After Sonic got into an argument with Knuckles however, it was decided that a fighting tournament was to be held to determine the most qualified fighter amongst the Chaos Emerald bearers to use the Lunar Fox.[56] Eventually, the victor of the tournament won the Chaos Emeralds from the fighters after besting each of them in battle. This person went to the Death Egg II in the Lunar Fox and initiated its self-destruct sequence. When Robotnik then arrived to defeat the victor with the E-Mech, the victor used the Chaos Emeralds to give themselves a power boost, allowing them to defeat Robtonik and escape in the Lunar Fox before the Death Egg II exploded.

In this game, there are a total of eight Chaos Emeralds. Why an extra Emerald was added to the set and where it came from is not explained. Also, while the Emeralds retain their brilliant cut design in this game, they have received the following new colors: blue, orange, red, violet, yellow, green, purple, and pink.

In gameplay, the playable character receives a Chaos Emerald each time they defeat one of the game's first eight opponents. Later, during the final battle with Robotnik and his E-Mech, the playable character will use the Chaos Emeralds to use their Hyper Mode/super transformation.

Sonic 3D Blast

S3DMDChaosEmeralds

The seven Chaos Emeralds in the Sega Mega Drive version of Sonic 3D Blast.

Quotation1 Chaos Emeralds: Dr. Robotnik wants to use the power of the Chaos Emeralds to gain control over the world. The only way to stop him is by racing to the Emeralds first! Once you have collected 50 or more Rings, look around for Tails or Knuckles, who can transport you to the Bonus Stage, where the Chaos Emeralds can be found. Quotation2
— United States instruction booklet, Sonic 3D Blast (Sega Mega Drive)[57]

In Sonic 3D Blast, the Chaos Emeralds laid dormant on the mysterious Flicky Island, an island which legend said held the Chaos Emeralds. Serving as a clue to the gems' whereabouts were the island's strange Flickies from another dimension. Eventually discovering Flicky Island, Dr. Robotnik traveled there and discovered the Flickies' secret way of traveling between dimensions. He then began turning the Flickies into Badniks to search for the Chaos Emeralds. However, Sonic, Tails and Knuckles soon after came to Flicky Island as well to find the Chaos Emeralds too. Finding the island in pandemonium, Sonic set out to find the Chaos Emeralds before Robotnik and save the Flickies.[36] After accomplishing his mission, Sonic used the seven Chaos Emeralds to enter Robotnik's final bastion and defeat his final weapon, thus restoring peace to Flicky Island.

In this game, there are seven Chaos Emeralds in the colors red, blue, turquoise, green, yellow, purple and white, like in Sonic the Hedgehog 3 and Sonic & Knuckles. However, their shape varies between the versions of the game. In the Sega Mega Drive version, the Emeralds are cuboid-shape with a circular depression in one of the facets. In the Sega Saturn/PC version however, they possess the brilliant cut shape they take on today.

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The Chaos Emeralds in the Sega Saturn/PC version of Sonic 3D Blast.

In gameplay, the player will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. If the player collects all seven Chaos Emeralds, they can enter The Final Fight after clearing Panic Puppet Zone. Should the player then clear The Final Fight, they will unlock the game's good ending. In case the player fails to get all the Emeralds however, the game ends after Panic Puppet Zone and the player will receive the game's bad ending. In the bad ending on the Sega Mega Drive version, Robotnik will be shown holding the green, yellow, blue and red Chaos Emerald. In the bad ending on the Sega Saturn/PC version on the other hand, Robotnik is seen throwing Chaos Emeralds between his hand with the words "Try Again" written above. The Emeralds Robotnik is seen throwing around in that scene depends on which Chaos Emeralds the player was not able to get before the ending.

Sonic Blast

Sonic Blast Sonic

The pieces of a Chaos Emeralds being scattered in Sonic Blast.

Quotation1 Chaos Emeralds/Big Rings: Dr. Robotnik wants to use the power of the Chaos Emeralds to gain control over the world. The only way to stop him is by getting to the emeralds first! Keep an eye out for Big Rings, the entrances to the Bonus stage. Quotation2
— United States instruction booklet, Sonic Blast (Sega Game Gear)[58]

In Sonic Blast, the Chaos Emeralds rested on South Island, maintaining the island's peace. While the protector of the Emeralds, Sonic, slept in his hammock with a Chaos Emerald on hand however, Dr. Robotnik tried shooting Sonic with a laser. However, he accidently hit Sonic's Emerald instead. Awakening, Sonic saw the Chaos Emerald spin violent before shattering into five multicolored Emerald Shards which flew to all the corners of the island. Pleased with the unexpected result nonetheless, Dr. Robotnik planned to find the Chaos Emerald shards and use them to fortify his new Silver Castle. In response, Sonic and the newly-arrived Knuckles decided to team up and crush Robotnik's ambition.[59] Ultimately, Sonic and Knuckles got the Chaos Emerald shards back and destroyed the Silver Castle.

In this game, the Chaos Emeralds are brilliant cut gemstones. The original Chaos Emerald is depicted as a multicolored gem, while its shards are depicted as smaller Chaos Emeralds in the colors red, blue, green, yellow, and white.

ChaosEmeraldSonicBlast

The Chaos Emerald shards in Sonic Blast.

In gameplay, the playable character will obtain a Chaos Emerald shard whenever the player clears one of the game's five Special Stages. However, the player is only allowed to enter a single stage per Zone; entering the Special Stage a second time in a Zone will take player to the same stage to win an extra life. If the player collects all five Chaos Emerald shards and then clears Silver Castle Zone, they will access the game's final boss. Beating that boss will lead to the game's good ending, which shows the playable character tossing the Chaos Emerald shards around in their hand. If the player has not gotten all the Emeralds before clearing Silver Castle Zone however, the game will end after clearing Silver Castle Zone and the player will receive the game's bad ending.

Sonic R

ChaosEmeraldR

The Chaos Emeralds in the Sega Saturn version of Sonic R.

Quotation1 Chaos Emeralds: And what would a Sonic game be without Chaos Emeralds? Race around the tracks to find the Emeralds, but only the best racers can keep them. Quotation2
— United States instruction booklet, Sonic R (Sega Saturn)[60]

In Sonic R, the Chaos Emeralds rested along the race venue of the World Grand Prix. Having discovered the Chaos Emeralds' whereabouts, Dr. Robotnik planned on obtaining them and using them for world domination. Rather than looking for them himself however, Robotnik signed up for the World Grand Prix to lure Sonic and his friends into joining the competition. He would then let Sonic and co. handle the grunt labor of hunting the Emeralds out. Once the Emeralds had been located, Robotnik planned on appropriating them with his legion of evil racing robots.[61] Eventually, all the Chaos Emeralds were found, although they did not end up in Robotnik's hands.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones, like in Sonic the Hedgehog 3 and Sonic & Knuckles. However, these Emeralds are colored blue, purple, green, red, white, yellow, and orange.

In gameplay, the Chaos Emeralds are hidden on the first four race tracks, usually behind Ring Gates that require fifty Rings to be unlocked. Once the player manages to find an Emerald during a race and nab it, they must finish the race in first place to keep it. If placed second or lower, the obtained Emerald will be lost, and the player must start the procedure over. Collecting all seven Emeralds will unlock Super Sonic as a playable character.

Sonic Adventure

In Sonic Adventure and Sonic Adventure DX: Director's Cut, Dr. Eggman discovered an ancient deity called Chaos that grew bigger and stronger for each Chaos Emerald it absorbed. Seeking to use the creature to destroy Station Square and built Robotnikland upon its ruins, Eggman freed Chaos from its imprisonment in the Master Emerald and began hunting the Chaos Emeralds. However, Eggman also ended up freeing Tikal, who would show the Chaos Emeralds' past from 4000 years ago to those involved in this incident in hopes that they would understand the danger that was looming.[37]

The purple Chaos Emerald was discovered by Tails prior to Chaos' release during one of his test fights, who used it to power a new prototype airplane.[62] Meanwhile, the yellow Chaos Emeralds had been found by Big, who kept it as a lucky charm.[63] Lastly, the turquoise Chaos Emerald resided in a pedant belonging to a bird that Eggman had captured.

Sadx chaosemerald

Tails holding the purple Chaos Emerald.

On the night of Chaos' release, Big's friend Froggy swallowed Big's Chaos Emerald after he got possessed by Chaos by drinking Chaos' fragmented tail, before running away.[63] Soon after, Tails crashed in his prototype airplane, leaving him and Sonic to take the purple Chaos Emerald back to Tails' workshop. Upon arrival however, Dr. Eggman came and managed to take the purple Chaos Emerald from Tails, which he then fed to Chaos 0, transforming it into Chaos 1. Afterward, Sonic and Tails decided to find the remaining Emeralds to keep Chaos from transforming any further.[64] The duo soon after found the blue Chaos Emerald in Windy Valley and the white Chaos Emerald in Casinopolis. Upon leaving Casinopolis however, Eggman ambushed Sonic and Tails with sleeping gas and stole the white Chaos Emerald, which he later gave to Chaos 1, transforming it into Chaos 2. Undeterred, Sonic and Tails retrieved the green Chaos Emerald from Icecap. However, upon their return to Mystic Ruins, Knuckles attacked them, having been duped by Eggman into believing that Sonic and Tails were hunting the Master Emerald's scattered shards. During the fight, Sonic dropped the blue and green Chaos Emerald, which Eggman then appeared to claim and fed to Chaos 2, transforming it into Chaos 4.

As Eggman retreated in his Egg Carrier, the bird carrying the turquoise Chaos Emerald managed to escape from the Egg Carrier and ended up in Amy's care. Meanwhile, after failing to catch the Egg Carrier in the Tornado, Tails concluded that he had to finish his Tornado 2 in order to beat the Egg Carrier. To do that however, he needed a Chaos Emerald.[65] He soon found the red Emerald, only for Froggy to nab it and run away. Eventually though, Tails caught Froggy and got the red Chaos Emerald away from him, which he then installed into his Tornado 2 as a power source. Soon after though, the bird with the turquoise Chaos Emerald ended up on the Egg Carrier again, where Eggman took its Emerald away from it. Meanwhile, Froggy, who had also been brought onboard the Egg Carrier, was rescued by Big. As they escaped however, they encountered Chaos 4 and Eggman. There, Eggman and Froggy gave their respective Chaos Emeralds to Chaos, transforming it into Chaos 6. After Chaos 6 was defeated by Knuckles however, the deity relinquished its six Chaos Emeralds, which Knuckles took with him to Angel Island.

Swithdrainedce

Sonic using the drained Chaos Emeralds.

On Angel Island, the Chaos Emeralds seemingly prevented Angel Island from taking flight.[66] Soon after, Chaos appeared, having broken off its alliance with Eggman, and stole the six Chaos Emeralds. Learning of the theft, Sonic and Tails hurried out to find the last Chaos Emerald, which was still in the Tornado 2. Upon finding it however, Chaos took it. With all seven Emeralds in its possession, Chaos transformed into Perfect Chaos and attacked Station Square. During its rampage, Perfect Chaos drained the Chaos Emeralds of their negative chaos energy using its anger and sadness and expelled them across the ruins of Station Square. The inert Chaos Emeralds were then gathered by Sonic's friends and given to Sonic. Using the trust of his friends and those believing in him, Sonic recharged the Chaos Emeralds and used them to turn into Super Sonic. With the Emeralds' power, Sonic defeated Perfect Chaos and neutralized the anger and sadness possessing it.

In gameplay, the acquisition of the Chaos Emeralds were integrated into the mainstream story line, instead of being an objective the player had to accomplish in different levels. This was a first for the Sonic series and would start a recurring trend for several subsequent Sonic games.

Sonic the Hedgehog Pocket Adventure

ChaosEmeraldPocketAdventure

Six of the Chaos Emeralds in Sonic the Hedgehog Pocket Adventure.

In Sonic the Hedgehog Pocket Adventure, the Chaos Emeralds were being collected by Sonic. While the hedgehog was able to gather six of them from the Special Stages, the seventh (the purple one) remained in the possession of Knuckles. During a confrontation between Sonic and Knuckles, the latter dropped his Emerald. When Sonic tried returning the Chaos Emerald however, Dr. Eggman dropped in and stole it. After Sonic chased Eggman to the Last Utopia Zone, Eggman used the Emerald he stole to power his lastest weapon. However, Sonic took the Emerald back and destroyed Eggman's weapon. As Eggman then fled into space, Sonic used the Chaos Emeralds to turn into Super Sonic and defeat Eggman for good, before flying down from space and landing on the bypassing Tornado. Sonic then powered down to normal as the Chaos Emeralds scattered themselves. Afterward, Sonic got Knuckles' Chaos Emerald back to him.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones in the following colors: red, blue, green, yellow, purple, white and pink.

ChaosEmeraldPocketAdventureScattering

The Chaos Emeralds scattering in the ending of Sonic the Hedgehog Pocket Adventure.

In gameplay, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's six Special Stages. The seven Emerald, however, can only be obtained during Last Utopia Zone's boss battle. To acquire that Chaos Emerald, the player must physically hit the Emerald that sits on the back of the boss instead of the boss's cockpit until it is knocked loose. The player must then collect the Emerald and destroy the boss. However, if the player destroys the boss first, the Chaos Emerald will be lost. Collecting all seven Chaos Emeralds will let the player enter Chaotic Space Zone after clearing Last Utopia Zone and let them see the game's good ending after defeating the final boss. If the player misses any of the seven Emeralds however, the game ends after Last Utopia Zone and the bad ending will appear.

Sonic Adventure 2

In Sonic Adventure 2 and Sonic Adventure 2: Battle, the Chaos Emeralds played another central role. This time around, Dr. Eggman had managed to get the white Chaos Emerald, while Rouge the Bat had obtained the blue Chaos Emerald. Meanwhile, the yellow Chaos Emerald, which had become the famed prize of Station Square, was given to Tails as a reward for the fox's heroic deed when he saved the city from Eggman's missile attack.[67] The red, purple and turquoise Chaos Emeralds on the other hand were put in the cargo area on Prison Island while the green Chaos Emerald was kept in the national reserve bank.[68]

During his break-in on Prison Island, Eggman used the white Chaos Emerald to awaken Shadow the Hedgehog from his stasis. After disposing of a B-3x Hot Shot and instructing Eggman to bring more Chaos Emeralds to the Space Colony ARK, Shadow broke into the national reserve bank and stole the green Chaos Emerald. While escaping the military and the police, Shadow used his Emerald to demonstrate his Chaos Control ability when he came across Sonic. Reuniting with Eggman onboard the ARK, Shadow showed the doctor the Eclipse Cannon, a weapon capable of destroying a planet, by booting it up with his green Chaos Emerald. To reactivate it and use it to its full potential however, all seven Chaos Emeralds were needed to power it.[69][70] With such a weapon, Eggman planned to force the world's leaders into surrendering to the Eggman Empire. Rouge soon after showed up and offered both her blue Chaos Emerald and her services to Eggman (all so she could secretly infiltrate Eggman's ranks on behalf of the government), which Eggman and Shadow accepted.

SA2 Cutscene 400

Six of the Chaos Emeralds inserted into the Eclipse Cannon.

The three Chaos Emeralds on Prison Island were later stolen from their containers by Rouge on behalf of Eggman. However, when the island was set to blow up, Rouge got trapped inside a locked safe with the Emeralds. Fortunately, Shadow came and warped him, her, and the Emeralds to safety with Chaos Control. Having now six Chaos Emeralds, the Emeralds got inserted into the Eclipse Cannon which Eggman used to blow half of the moon up as a demonstration of power to the world. When Sonic, Tails, Amy and Knuckles then arrived on the ARK to stop Eggman, Tails revealed a fake Emerald he had made after researching the real one. This gem possessed a Chaos Emerald's properties and appearance, but was weaker in terms of power and could reverse the energy field inside the real Chaos Emeralds and then explode. Sonic and co. thus planned to insert the fake Emerald into the Eclipse Cannon and destroy it. However, that planned failed, and Tails and Eggman ultimately fought each other. Although Eggman was defeated, he secretly stole the yellow Chaos Emerald from Tails and escaped.

Ceadventure2

Sonic and Shadow with the Chaos Emeralds just before transforming into their Super States.

In the end, Eggman placed the last Chaos Emerald in the Eclipse Cannon. Upon doing so however, he triggered the doomsday program made by his late grandfather, Gerald Robotnik (which was Shadow's plan all along). This program, which Gerald had created to avenge his granddaughter Maria's death at the hands of GUN, pulled the Chaos Emeralds into the Cannon's Core where their energy was used to turn the core into a reactive bomb and shift the ARK's position so that it would collide with Earth; if the ARK collided with the Earth, the planet would be destroyed.[71][72] Sonic, his friends, Eggman and Rouge thus teamed up to reach the core and cut off the Chaos Emeralds' energy with the Master Emerald, which Knuckles had on him. In the core, Knuckles successfully shut down the Chaos Emeralds with the Master Emerald. However, the ARK was kept on its collision course by the Finalhazard. In response, Sonic and a reformed Shadow used the Chaos Emeralds to turn into Super Sonic and Super Shadow. Together, the two superpowered hedgehogs destroyed the Finalhazard and returned the ARK to orbit with a massive Chaos Control.

In gameplay, the acquisition of the Chaos Emeralds were integrated into the mainstream story line, instead of being an objective the player had to accomplish in different levels. Also, in Security Hall, the player's objective is to find the red, purple and turquoise Emerald within a time limit.

Sonic Advance series

Sonic Advance

ChaosEmeraldAdvance

The Chaos Emeralds in Sonic Advance.

In Sonic Advance, Dr. Eggman sat his sights on the Chaos Emeralds once again as he began his lastest scheme to expand his Eggman Empire.[73] Jumping into action to stop Eggman, Sonic, Tails, Knuckles and Amy collected the Chaos Emeralds before Eggman. When Dr. Eggman later retreated to the moon after being defeated in X-Zone, Sonic used the Chaos Emeralds to turn into Super Sonic and defeated Eggman and his Super Egg Robot in a final showdown on the moon's surface. Several days later, Super Sonic showed up in the sky.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. Additionally, the collected Chaos Emeralds are shared among the cast of playable characters, meaning that every Chaos Emerald only needs to be collected once. After collecting all the Chaos Emeralds, the player will be able to access The Moon Zone as Super Sonic after defeating the EGG X in X-Zone as Sonic, and by clearing it, the player will be treated to the true ending of the game. If the player fails to get all the Chaos Emeralds however, the game ends after X-Zone and the player will see the game's bad ending.

Sonic Advance 2

ChaosEmeraldAdvance2

The Chaos Emeralds in Sonic Advance 2.

In Sonic Advance 2, the Chaos Emeralds were collected by Sonic and his pals once more. When Vanilla, the mother of Cream, later got kidnapped by Dr. Eggman in his latest machine, Sonic used the Chaos Emeralds to turn into Super Sonic and pursued Eggman into space where he defeated Eggman and rescued Vanilla.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. However, the Emeralds are not shared between the characters, meaning that each character will have to attain their own set of seven Chaos Emeralds in their gameplay. If the player collects all seven Chaos Emeralds with any character, the Tiny Chao Garden feature and Boss mode of Time Attack are unlocked. If Sonic collects all seven Chaos Emeralds, the player can access True Area 53 from the Zone Select and progress to the true ending of the game. Also, if Sonic, Tails, Knuckles and Cream each collect the seven Chaos Emeralds, Amy is unlocked as a playable character.

Sonic Advance 3

ChaosEmeraldAdvance3

The Chaos Emeralds in Sonic Advance 3.

In Sonic Advance 3, the Chaos Emeralds were acquired by Dr. Eggman, who used them to induce a Chaos Control that divided the world into seven parts, which the doctor then planned to turn into an Eggman Empire each.[74][75] Afterward, the Emeralds ended up in the Special Stages again. To restore the world, Sonic and his friends sought to collect the Chaos Emeralds and undo Eggman's mischief with Chaos Control.[75] After obtaining the Emeralds, Sonic and co. defeated Dr. Eggman and his new enforcer G-merl at the Altar Emerald. As the villains made their escape however, G-merl sensed the Chaos Emeralds in Sonic's possession and attacked him, causing him to drop the Emeralds. G-merl then used the Chaos Emeralds to turn into Ultimate G-merl, before rebelling against Eggman and fleeing. However, Sonic used the Chaos Emeralds left behind by Ultimate G-merl to turn into Super Sonic and, with the help of Dr. Eggman, defeated Ultimate G-merl.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. Additionally, the collected Chaos Emeralds are shared among the cast of playable characters, meaning that every Chaos Emerald only needs to be collected once. Once a Chaos Emerald has been obtained, the player can go see it in its associated Zone's Chao Playground. Collecting all the Chaos Emeralds lets the player access Nonaggression as Super Sonic after defeating the Hyper Eggrobo in Altar Emerald as Sonic, and by clearing it, the player will receive the true ending of the game. If the player fails to get all the Chaos Emeralds however, the game ends after beating the Hyper Eggrobo and the player will receive the alternate ending.

Sonic Battle

In Sonic Battle, four of the Chaos Emeralds were found by Dr. Eggman,[76] who used them to experiment on robot cores.[77] Three of these Emeralds were eventually crushed into five Emerald Shards each by Eggman and used to power his new E-121 Phi units,[78] which he programmed to hunt down all seven Emeralds.[79] One of the other Chaos Emeralds ended up in Knuckles' possession,[80] while another one was being held by Shadow.[81] The last one resided in a jewelry shop in Emerald Town.[82]

Eggman soon gave his last Chaos Emerald to the Gizoid he had found: Emerl, a Gizoid powered by Chaos Emeralds.[83] For each Emerald gained, Emerl's speech and personality would become more and more developed and his battle abilities would grow stronger and stronger. However, when he refused to fight, Eggman threw Emerl out when he would not give him the Emerald back.[84] When Rouge later met Eggman and one of his Phis, Rouge destroyed the latter and took its Chaos Emerald shard. She later obtained another Chaos Emerald shard from the tenth Phi unit under unknown circumstances.

ChaosEmeraldBattle

Emerl receiving a Chaos Emerald.

Emerl was soon after found by Sonic, and with Tails' aid, he discovered that Emerl grew with each Chaos Emerald inserted into him.[83][85] Wanting to help Emerl grow, Sonic and Tails took him to Knuckles and convinced him to let them borrow his Chaos Emerald, which they inserted into Emerl. Not long after, Tails learned that Emerl was a superweapon. However, the heroes discovered that by inserting all seven Chaos Emeralds into Emerl, they could reset him with some keywords and turn him into an ordinary robot,[86] making their hunt for the Emeralds all the more important.

The Chaos Emerald in Emerald Town was soon after stolen by Rouge and Emerl (whom she had gotten a hold of). However, once Rouge got the Emerald, Emerl took it and absorbed it.[87] Four Chaos Emerald shards were subsequently retrieved from four Phis by Knuckles and Emerl. After receiving one of Rouge's shards as well, Knuckles and Emerl were able to reassemble the shards into a whole Chaos Emerald with Tails' aid, which Emerl then received. When Amy and Emerl later teamed up, the duo would destroy four Phis and claim their Chaos Emerald shards. After they obtained the fifth shard from Rouge, Amy and Emerl had Tails put them together, and Emerl promptly received his fifth Chaos Emerald. When they later got trapped in the Gimme Shelter, Cream and Emerl gathered four Chaos Emerald shards from the residential Phis. The fifth shard, which Chaos Gamma held to boost his power, was eventually claimed as well. The shards were then put together and Emerl absorbed the reassembled Chaos Emerald. The last Chaos Emerald was later willingly given to Emerl by Shadow himself after he learned of Gerald Robotnik's intentions for Emerl. With all seven Chaos Emeralds in him, Emerl's true nature awoke until Shadow reset him with Gerald's secret keywords.

Eventually, Eggman accidently made Emerl go berserk when he tried to take control of him. To keep Emerl from destroying the world with the Final Egg Blaster, Sonic tried using the Master Emerald to stop the Chaos Emeralds from getting out of control and snap Emerl back to his senses.[88] However, the Master Emerald got shattered before Sonic could stop the Chaos Emeralds. Having no other choice, Sonic damaged Emerl until he self-destructed. The Chaos Emeralds were then released, partially or entirely in the form of shards. To calm a heartbroken Cream, Sonic assured her that Emerl was with them in the Emerald shards.[89]

In this game, all seven Chaos Emeralds are depicted as green brilliant cut gemstones. However, from the in-game perspective, they are stated to be in different colors.[90] In gameplay, the acquisition of the Chaos Emeralds were integrated into the mainstream story line instead of being an objective the player had to accomplish in different levels. Also, upon obtaining a Chaos Emeralds, Emerl's Skill Points will increase by ten.

Sonic Heroes

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The Chaos Emeralds in Sonic Heroes.

In Sonic Heroes, the Chaos Emeralds were collected by Team Sonic, Team Dark, Team Rose and Team Chaotix: Team Sonic found the blue Chaos Emerald, Team Dark obtained the green and white Chaos Emerald, Team Rose collected the yellow and purple Chaos Emeralds, and Team Chaotix gathered the red and turquoise Chaos Emeralds. All the Emeralds were eventually given to Team Sonic, so they could take down a rogue Metal Sonic. After Metal Sonic assumed his ultimate form, Metal Overlord, Sonic used the Chaos Emeralds to turn into Super Sonic while passing his power onto Tails and Knuckles, turning them into Super Tails and Super Knuckles. Together, the trio of Super State users defeated Metal Overlord.

In gameplay, the playable character will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages that feature the "Emerald Challenge". Additionally, the collected Chaos Emeralds are shared among the cast of playable characters, meaning that every Chaos Emerald only needs to be collected once. By collecting all seven Chaos Emeralds, the player will unlock the Last Story, which is the game's epilogue. Each Chaos Emerald is collected in the following color order: green, blue, yellow, gray, turquoise, purple, and red. Also, when using Chaos Inferno, Shadow will pull out the green Chaos Emerald and use Chaos Control as a part of the Team Blast. How Shadow obtained the Chaos Emerald is not explained.

Sega Superstars series

Sega Superstars

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The Chaos Emeralds in Sega Superstars.

In Sega Superstars, the Chaos Emeralds appear along the route in the Sonic's Speed Chute minigame, which features Sonic or Shadow running down a Special Stage-like tunnel filled with Rings and spiked bombs. During the minigame, the player can collect the Emeralds. Whenever a Chaos Emerald is getting near, a indicator will appear that shows where the Chaos Emerald is located. Collecting all seven Chaos Emeralds will transform Sonic or Shadow into Super Sonic or Super Shadow for the remainder of the minigame.

Sega Superstars Tennis

In Sega Superstars Tennis, the Chaos Emeralds are seen when Sonic transforms into Super Sonic and Shadow transforms into Super Shadow as a part of their Superstar State.

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The Chaos Emeralds in Sega Superstars Tennis.

In the console version of the game, the Chaos Emeralds are used in the mission, "Chaos Emerald Dash" of the Sonic the Hedgehog series. In the said mission, the player has to collect five of the Chaos Emeralds in forty-five seconds by collecting enough Rings, though the player can also collect all the seven Chaos Emeralds for a higher Rank in the mission.

Sonic & Sega All-Stars Racing

In Sonic & Sega All-Stars Racing, the Chaos Emeralds are seen when Sonic transforms into Super Sonic and Shadow transforms into Super Shadow as a part of their All-Star Moves. The icon for these moves also has a picture of all the Chaos Emeralds.

Sonic Jump

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The Chaos Emeralds in Sonic Jump.

In Sonic Jump, Dr. Eggman began gathering the Chaos Emeralds for the purpose of using them to power a Brainwash Beam that would let him take control of the world. After gathering six of the Chaos Emeralds, the doctor went to Angel Island to get the last one from Knuckles. There, Eggman took the Emerald while Knuckles was distracted. After making it to his space satellite where the Brainwash Beam was with all seven Emeralds however, Sonic arrived and made the space satellite explode, causing the Chaos Emeralds to be scattered across earth. Afterward, the Emeralds were retrieved by Sonic, include the one Eggman managed to keep his mitts on.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones in the following colors: red, green, blue, black, purple, yellow, and white.

In gameplay, the player must complete an Act with at least fifty Rings in their possession in order to obtain a fragment of a Chaos Emerald. Completing all three Acts of a Zone will complete its associated Chaos Emerald. If the player manages to collect the first six Chaos Emeralds, they will unlock the Bonus Zone where the final Chaos Emerald can be earned.

Shadow the Hedgehog

In Shadow the Hedgehog, the Chaos Emeralds became the driving force in a three-way war between the Eggman Empire, GUN, and an extraterrestrial race of evil aliens known as the Black Arms. At the beginning of the war, Black Doom, the leader of the Black Arms, instructed Shadow to bring him the seven Chaos Emeralds which he needed to begin the ritual of prosperity. Shadow himself accepted the hunt for the Emeralds, believing he could uncover the secrets of his past that way.

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Shadow with the seven Chaos Emeralds in Shadow the Hedgehog,

After a long journey and many moral choices, Shadow obtained all seven Chaos Emeralds, with the first one being obtained from Westopolis. Arriving afterward on the Black Arms' home, the Black Comet, Shadow met Black Doom, who asked for the Chaos Emeralds. However, as Sonic and his allies arrived to stop Shadow from handing the Chaos Emeralds over, Black Doom took the Emeralds himself and used them to perform a superpowered Chaos Control that brought the Black Comet down to Earth, allowing him to commence with the ritual of prosperity. The Chaos Emeralds were then taken to the heart of the Black Comet by Black Doom when Shadow decided to stop Black Doom's plans. There, Black Doom left the Chaos Emeralds behind when he warped away to prepare for his battle with Shadow. Shadow then used the abandoned Emeralds to transform into Super Shadow. With the Emeralds' power at his disposal, Super Shadow defeated Devil Doom (the enhanced form of Black Doom) and sent the Black Comet back into space with Chaos Control where it was destroyed by the Space Colony ARK's Eclipse Cannon.

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The Chaos Emeralds in the possession of Black Doom.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones in the following colors: red, green, blue, turquoise, purple, yellow, and white. However, they are brighter in cutscenes, while in gameplay, they are darker. They are also bigger.

In gameplay, Shadow will usually obtain a Chaos Emerald after he clears a certain mission in a given stage or defeats a specific boss. One Chaos Emerald in a certain scenario is also obtained during a cutscene. Also, in Westopolis, the green Chaos Emerald is obtained in mid-level. Regardless, before entering one of the five final stages in the game, the player will always have collected five Chaos Emeralds. The sixth is gained after passing the final stage, and the seventh is obtained after beating one of the three final bosses. At the end of every scenario, the Chaos Emeralds will revolve around Shadow, who will then state who he is.

Sonic Rush series

Sonic Rush

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The Chaos Emeralds in Sonic Rush.

In Sonic Rush, the Chaos Emeralds were collected by Sonic. Coming to the aid of the defeated Blaze, Sonic taught her how to use the Sol Emeralds, the inter-dimensional counterparts of the Chaos Emeralds from Blaze's world, causing them to be recharged after being drained of their power. Sonic then used the Chaos Emeralds to turn into Super Sonic while Blaze used the Sol Emeralds to become Burning Blaze, and together, the two heroes defeated Dr. Eggman and Dr. Eggman Nega's Egg Salamander and restored their universes.

In gameplay, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. If the player collects all seven Chaos Emeralds, along with all seven Sol Emeralds, they will unlock the game's Extra scenario, which features Exception and the true epilogue of Sonic Rush.

Sonic Rush Adventure

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The Chaos Emeralds in Sonic Rush Adventure.

In Sonic Rush Adventure, the Chaos Emeralds somehow got scattered around Blaze's world, where they were collected by Sonic, who was stranded in Blaze's world with Tails. Eventually, Tails began working on a device that would let him and Sonic use the Emeralds' power to get them back to their dimension. Suddenly, however, Dr. Eggman and Dr. Eggman Nega appeared to harness the Power of the Stars with the Jeweled Scepter and their Egg Wizard. To stop the Eggmen, Sonic used the Chaos Emeralds to become Super Sonic while Blaze used the Sol Emeralds to become Burning Blaze. Together, the two heroes defeated the Eggmen and destroyed their Egg Wizard. Afterward, Tails created the SS Tornado EX, a vehicle that used the power of both the Chaos Emeralds and Sol Emeralds to travel between dimensions, for him and Sonic to go home in. Curiously, both sets of Emeralds were extremely stable while Tails made it instead of causing cataclysmic effects. This made Tails conclude that the Emeralds seemingly wanted to help Sonic and Tails go home. As Sonic then prepared to head home, Blaze suggested that his and Tails' surprise arrival in her world was caused by the Emeralds.

In gameplay, the player will be awarded with a Chaos Emerald each time they come out victorious from one of Johnny's seven races. If the player collects all seven Chaos Emeralds, along with all seven Sol Emeralds, they will unlock the game's epilogue and final stage.

Sonic Riders series

Sonic Riders

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Jet using the Chaos Emeralds on the Key of Babylon Garden.

In Sonic Riders, the Chaos Emeralds were being hunted once again. One factions of the Emerald hunters were the Babylon Rogues, who worked with Dr. Eggman to gather all seven Chaos Emeralds and use them to find Babylon Garden. The other faction tracking the Emeralds was Team Sonic, who used an Emerald Detector to find them. One Emerald, which lay in Future City, was eventually stolen by the Babylon Rogues. Team Sonic tried to stop them, but failed. To get the other Emeralds together, Eggman hosted the EX World Grand Prix, whose contestants had to pay an entrance free of one Chaos Emerald and where the winner could claim all seven. With Sonic, Sonic's friends, and the Babylon Rogues joining the competition, all seven Chaos Emeralds were eventually brought together. When Jet "won" the final race against Sonic, he claimed the seven Chaos Emeralds and used them to power the Key to Babylon Garden which raised Babylon Garden from Sand Ruins.

In gameplay, the yellow Chaos Emerald is used to depict the Chaos Emerald Extreme Gear. However, during races, this Extreme Gear takes the appearance of the Blue Star.

Sonic Riders: Zero Gravity

In Sonic Riders: Zero Gravity, the yellow Chaos Emerald is used to depict the Chaos Emerald Extreme Gear. However, during races, this Extreme Gear takes the appearance of the Blue Star.

Sonic Free Riders

In Sonic Free Riders, all seven Chaos Emeralds are used to depict the Chaos Emeralds Extreme Gear. However, during races, this Extreme Gear takes the appearance of the Blue Star.

Sonic the Hedgehog (2006)

In Sonic the Hedgehog (2006), Chaos Emeralds from different time periods were drawn into the insuring conflict.

When this incident began, the blue Chaos Emerald was in the possession of Princess Elise. The Chaos Emeralds were later targeted by Dr. Eggman who needed them to unlock the secrets of the Flames of Disaster, which were sealed inside Elise. As such, he tried to kidnap Elise and take her Chaos Emerald. However, Sonic got in the way. Elise later passed the blue Chaos Emerald on to Sonic when she got taken away by Eggman. In the meantime, after being freed from the Scepter of Darkness, Mephiles the Dark somehow acquired the purple Chaos Emerald.

The blue Chaos Emerald was eventually handed over to Eggman by Sonic in exchange for Elise's release. However, after Sonic relinquished the Emerald as instructed, Eggman broke his promise and sent Sonic, Tails and Knuckles to the future with a new machine. Eggman later used the blue Chaos Emerald to power his Egg-Genesis, but it was claimed by Silver and Blaze after they destroyed the robot.

In the future, Sonic and his friends met Shadow and Rouge. Seeking to get back to their own time, the group began seeking Chaos Emeralds to use to create a space-time rift back to their own time with Chaos Control. In the meantime, Mephiles, who had arrived in the future, showed Silver (who had yet to go back in time with Blaze at that point) a fabricated vision of Sonic surrounded by flames through his purple Chaos Emerald for his plot to manipulate Silver into killing Sonic. Eventually, Shadow and Rouge found the green Chaos Emerald whilst exploring Crisis City. Afterward, their group located the turquoise Chaos Emerald in Flame Core. Upon retrieving the Emerald however, they awoke Iblis, forcing the group to fight him off. Once Iblis was defeated, Sonic and Shadow used the green and turquoise Emerald to create a space-time rift, although Shadow remained behind to confront Mephiles.

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A Chaos Emerald absorbing the Flames of Disaster to seal it inside Elise.

After making it back to the present, Shadow fought Silver. During the fight Shadow used his green Chaos Emerald to use Chaos Control on Silver. In response, Silver used his blue Chaos Emerald to counter Chaos Control with Chaos Control. The result created a space-time rift which Shadow and Silver ended up using to go back in time to when Iblis and Mephiles got divided from Solaris during the Solaris Project. When Silver caught Iblis, the Duke of Soleanna used the white Chaos Emerald he had on him to chant and seal Iblis inside his seven-year-old daughter Elise, so long as she abstained from crying, with the only other stipulation being that the vessel must be of royalty. Afterward, Silver received the white Chaos Emerald from the Duke before he died. With Mephiles having been sealed as well, Silver gave the blue Chaos Emerald to an unconscious Elise to keep as a lucky charm (which showed how Elise came to possess it in the present). Using then the green and white Chaos Emerald, Shadow and Silver created a space-time rift to return to the present with.

The turquoise and white Chaos Emeralds were soon after used by Sonic and Silver to create another space-time rift. With it, Sonic planned to change Elise's fate after the Egg Carrier crashed with her inside it. Before going through the rift however, Sonic gave his turquoise Emerald to Silver. He and Blaze then went back to the future where Silver planned to use the two Chaos Emeralds he had to seal Iblis of his time inside himself. However, while the Emeralds were able to channel Iblis, the entity rejected Silver as a vessel. Blaze, who was a qualified vessel, therefore stepped in and used the Chaos Emeralds to seal Ibis inside herself and then use Chaos Control to sent herself and Iblis to another dimension. Meanwhile, back in the present, Mephiles went hunting for Chaos Emeralds, which he needed to rejoin with Iblis. After finding the yellow Chaos Emerald in Dusty Desert, Team Dark confronted him, prompting Mephiles to use the yellow Chaos Emerald against them. After being defeated however, Mephiles recovered and used both the yellow and green Chaos Emerald (which he apparently took from Shadow) in conjunction with his self-replication powers to mass-produce duplicates of himself, which Team Dark promptly engaged.

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Elise using the Chaos Emeralds to revive Sonic.

Deciding to kill Sonic himself and fill Elise with so much grief that she would cry, Mephiles used his purple Chaos Emerald to distract Sonic and Elise as they walked together while he impaled Sonic from behind. Following Iblis' subsequent release, Mephiles used his purple Chaos Emerald to warp all six of the other Emeralds to his location. Using the Emeralds' full power, Mephiles remerged with Iblis, thereby recreating Solaris. Later, Sonic's friends searched through the End of the World for each of the Chaos Emeralds after Solaris scattered them. Lastly, Elise, sharing the hopes and desires of the remaining cast to revive Sonic, used all seven Chaos Emeralds to bring Sonic back to life, in the form of Super Sonic, who then shared his power with Shadow and Silver, turning them into Super Shadow and Super Silver. Together, the trio of hedgehogs defeated Solaris and saved time itself from destruction.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones in the colors they have had since Sonic Adventure. However, these emeralds appear slightly smaller in size, and give off gleaming sparks of light of their respective colors.

In gameplay, the acquisition of the Chaos Emeralds were integrated into the mainstream story line, instead of being an objective the player had to accomplish in different levels. Also, in End of the World (which consists of pieces of different Action Stages), the Chaos Emeralds serve as the different sections' goals for the cast of playable characters. Tails finds the yellow Emerald in Crisis City; Omega finds the green Emerald in Flame Core; Knuckles finds the turquoise Emerald in Tropical Jungle; Silver finds the white Emerald in Dusty Desert; Rouge finds the purple Emerald in Wave Ocean; Amy finds the blue Emerald in White Acropolis; and Shadow finds the red Emerald in Kingdom Valley.

Sonic Rivals series

Sonic Rivals

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In Sonic Rivals, each of the seven Chaos Emeralds makes an appearance as one the collectible cards in the game, and serve no purpose in the story. These cards depict the Chaos Emeralds as they appeared in Sonic Heroes. To collect each card, the player has to fulfill the following conditions:

Sonic Rivals 2

In Sonic Rivals 2, the Chaos Emeralds were targeted by Dr. Eggman Nega, who needed them to set the Ifrit loose upon the world. This Ifrit resided in another dimension which could only be accessed through a portal in Mystic Haunt Zone, and the key to opening this portal were the seven Chaos Emeralds.[91] To gather the Chaos Emeralds for him, Eggman Nega hired Rouge to search for them, albeit without revealing his identity or plans for the Emeralds.[92] Rouge assumed, however, that her client would protect the Chaos Emeralds.[93] Learning of Eggman Nega's plans, Dr. Eggman sent Metal Sonic (who was holding the green Chaos Emerald inside him) out to recruit Shadow and help him stop Eggman Nega.

During her hunt for the Chaos Emeralds, Rouge discovered a Chaos Emerald beneath a Chao. However, Espio, who had to distract Rouge and get the local Chao, took both the Chaos Emerald and the Chao away.[94] Eventually though, the two fought over their respective targets. In the end, Rouge got the Chaos Emerald. Soon after, Rouge detected two Chaos Emeralds with her Emerald Detector.[95]

By the time Rouge reached Mystic Haunt Zone as her client had instructed,[96] Rouge was in possession of six of the Chaos Emeralds.[97] Upon discovering her client's identity however, Rouge refused to hand the Chaos Emeralds over.[92] By this time though, Metal Sonic had already arrived at the scene. With all seven Chaos Emeralds in one place, the portal to the Ifrit's dimension opened.[98][99] Fortunately, the various individuals opposing Eggman Nega kept the Ifrit from leaving its dimension. During this, the six Chaos Emeralds Rouge had were seemingly lost.[100] Metal Sonic later extracted the Chaos Emerald he held from inside his body when he and Shadow got trapped in the Ifrit's dimension after closing the portal. Receiving the Chaos Emerald from Metal Sonic, Shadow warped himself and Metal Sonic back to their dimension with Chaos Control.[99]

Mario & Sonic series

Mario & Sonic at the Olympic Games

In Mario & Sonic at the Olympic Games, the Chaos Emerald appears in both the Wii and Nintendo DS version of the game.

In the Wii version of the game, the Chaos Emerald appears in the Dream Race event. It appears as a rare item that can help make a major comeback. When a player uses the Chaos Emerald, it halts every opposing player in their tracks, and stuns them for a few seconds, as well as give the user a speed boost. This allows the player to get ahead easier, but, the effects wear off very quickly. Still, the opponents still have to gain speed again.

In the Nintendo DS version of the game, the Chaos Emerald appears in the Dream Basketball event, where it can be used to either make the other characters' baskets move faster or a Boo to block one of the baskets. Also, in the Nintendo DS version's Dream Long Jump event, the Chaos Emerald can be used to create a strong headwind that affects all of the players.

Mario & Sonic at the Olympic Winter Games

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The Chaos Emeralds in Mario & Sonic at the Olympic Winter Games.

In Mario & Sonic at the Olympic Winter Games, the Chaos Emeralds appear in the Dream Figure Skating (Sonic) event. During this event, the player's team must recover the Emeralds over the course of Green Hill and Death Egg from Flappers, eventually using them to defeat a frozen version of Perfect Chaos.

Mario & Sonic at the London 2012 Olympic Games

In Mario & Sonic at the London 2012 Olympic Games, the Chaos Emeralds appear as an item in Party Mode. In this game, they stun opponents for a few seconds.

Mario & Sonic at the Rio 2016 Olympic Games

In Mario & Sonic at the Rio 2016 Olympic Games, the Chaos Emeralds appear as an item in the duel Rugby event. When the Emerald is activated, it creates an impact which will push opponents away. This breaks the trend of the Emerald's effect to paralyze all opponents for while.

In the Nintendo 3DS version of the game, the Chaos Emeralds raise special attack during the Boxing plus event.

Super Smash Bros. series

Super Smash Bros. Brawl

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Sonic holding a Chaos Emerald in his victory pose in Super Smash Bros. Brawl.

In Super Smash Bros. Brawl, all seven Chaos Emeralds are shown when Sonic transforms into Super Sonic and when he turns back to normal. The Chaos Emeralds can also be seen on Super Sonic's trophy. Also, in one of Sonic's victory poses Sonic holds the blue Chaos Emerald.

Super Smash Bros. for Nintendo 3DS and Wii U

In Super Smash Bros. for Nintendo 3DS and Wii U, Sonic will show the seven Chaos Emeralds when he transforms into Super Sonic and when he reverts back to normal. In the Wii U version of the game, the Chaos Emeralds can also be seen as a part of Super Sonic's trophy. Also, as a part of one of his victory poses on both versions of the game, Sonic will grab and hold the blue Chaos Emerald.

Super Smash Bros. Ultimate

In Super Smash Bros. Ultimate, Sonic calls forth the seven Chaos Emeralds when he transforms into Super Sonic and when he reverts back to normal. Also, one of Sonic's victory poses shows hin grabbing the blue Chaos Emerald. In addition, Shadow, who appears as an Assist Trophy, uses the green Chaos Emerald to perform Chaos Control.

Sonic Chronicles: The Dark Brotherhood

In Sonic Chronicles: The Dark Brotherhood, the Chaos Emeralds were targeted by the lost clan of echidnas known as the Nocturnus Clan, who had been confined to the Twilight Cage. In order to escape the Twilight Cage and conquer the world, the clan needed the Master Emerald to open a wormhole.[101] However, by the time the Nocturnus Clan found a way to temporarily leave the Twilight Cage, GUN had set up around the base of Angel Island where the Master Emerald rested.[102] In order to get the island and the Emerald to their turf, the Nocturnus Clan needed the Chaos Emeralds,[102] which had been locked away in hidden places around Sonic's world.[13]

After six of the Chaos Emeralds had been stolen by the Nocturnus Clan, Knuckles and Tails set a trap for the thieves to protect the last Emerald. However, the soldiers overcame the trap and got away with both Knuckles and the Chaos Emerald.[103] All seven Chaos Emeralds were then used by Imperator Ix, the leader of the Nocturnus Clan, to draw Angel Island and the Master Emerald to his clan's base of operations.[102]

After acquiring the Master Emerald, Ix took the Chaos Emeralds into the Twilight Cage and distributed them amongst the inhabitants, presumably because he did not want to keep the Emeralds in one place and to sow discord among the inhabitants so that they would not unite against the Nocturnus Clan.[104][105] One went to the Kron, one was given to the Zoah, one was handed over to the N'rrgal, two were given to the Voxai, and Nocturne's two Gizoid prefects, Scylla and Charyb, each received one. Specifically, the Kron received a Chaos Emerald to power the Nocturnus Clan's factory for weapons of war.[106] The warring Zoahs and N'rrgals on the other hand each received a Chaos Emerald to use as a weapon against each other.[107][108] This was a part of Ix's plan to play the Zoah and N'rrgal against each other using the Emeralds.[109] However, neither side knew that the other had received a Chaos Emerald; the N'rrgal in particular only knew the Zoah possessed a "secret weapon" powerful enough to crush them.[110] With the threat of both Emeralds in play, the war between the Zoah and N'rrgal came to a standstill.[111] Lastly, on the Voxais' colonies, the two Chaos Emeralds ended up with the Overmind, the leader of the Voxai, who psychically treated the Chaos Emeralds into Great Emeralds by filling them with their own psychic powers.[112][113] These Great Emeralds were kept in Voxai Colony Alpha where they boosted the Overmind's psychic powers.[114][115] However, the Overmind got corrupted by power and began using their psychic powers to mind control their people.[116]

The Chaos Emerald on the Kron Colony was eventually retrieved by Sonic and his team. With it, Tails was able to repair the Blue Cyclone after it had taken a beating from entering the Twilight Cage. The Emerald in the Zoah's possession was soon after claimed by Sonic's team as well after Sonic beat General Raxos' Challenge. With Sonic's team having deprived the Zoah of their superweapon, the N'rrgal had no longer any need for their Chaos Emerald and gave it to Sonic's team as promised.[117] The Chaos Emeralds in Sonic's possession later provided his team with some protection against the Overmind's psychic awareness when they came to Voxai Colony Beta.[118] Soon after, one of the Great Emeralds got transported to Voxai Colony Beta where it ended up in Thelxe's possession.[115][119] After Sonic's team beat Thelxe however, the heroes took possession of the Emerald, thus giving them some protection against the Overmind's powers.[120] The Overmind's last Chaos Emerald was soon after claimed by Sonic's team after they defeated it. Making it to Nocturne, Sonic's team got the last two Chaos Emeralds away from Scylla and Charyb after defeating them in battle. Soon after, during the final showdown with Ix, Sonic used the Chaos Emeralds to turn into Super Sonic and defeated Ix in his Super State.

In this game, the Chaos Emeralds are depicted as seven brilliant cut gemstones in the following colors: red, light blue, turquoise, pink, yellow, orange and purple.

In gameplay, the Chaos Emeralds are Quest Items that are acquired at certain points in the story instead of being objects that the player gets after completing extra levels.

Sonic Unleashed

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The Chaos Emeralds after being drained of their power in Sonic Unleashed.

In Sonic Unleashed, after being caught by a mech piloted by Dr. Eggman, Sonic used the power of the Chaos Emeralds to become Super Sonic, dealing destructive blows to Eggman's mech and his space armada. However, when Super Sonic confronted Eggman inside his space station, he got trapped in an energy field, which stripped him of his Super Sonic powers, while simultaneously robbing him of the Chaos Emeralds. As it turned out, Eggman had anticipated Sonic's transformation and saw this as the perfect opportunity to procure the Chaos Emeralds. Using his Chaos Energy Cannon, Eggman reversed the polarity of the Chaos Emeralds, causing them to generate dark chaos energy that was fired into the Earth, breaking it apart and awakening Dark Gaia prematurely.[121] The process left the Chaos Emerald drained of their power, and Eggman promptly discarded them from his space station, along with Sonic. Despite the Chaos Emeralds' inert state though, Sonic held onto them. Sonic soon after learned that he could return power to the Chaos Emeralds and repair the planet by placing each Emerald in a Gaia Temple where the planet's power could heal them.

With the aid of Light Gaia, Sonic got each of the Chaos Emeralds to a Gaia Temple, restoring the Emeralds' power and bringing the planet's continents back into place one-by-one. Later, while resting inside the shrines of each Gaia Temple, the Chaos Emeralds were commanded by Light Gaia to bring the Gaia Temples to him, prompting the Emeralds, as well as the Gaia Temples, to enter the core of the planet. There, the temples combined to form the Gaia Colossus, which Light Gaia took control of so he could fight Dark Gaia. Soon after, Sonic used the Chaos Emeralds in the temples to become Super Sonic again, and, with the aid of the Gaia Colossus, defeated Perfect Dark Gaia.

Sonic the Hedgehog 4

Episode I

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The seven Chaos Emeralds in Sonic the Hedgehog 4: Episode I.

In Sonic the Hedgehog 4: Episode I, the Chaos Emeralds serve as bonus items the player can collect over the course of the game. They also play no role in the game's story.

In gameplay, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. After collecting all seven Chaos Emeralds, Sonic can turn into Super Sonic in regular Zones. By collecting all seven Chaos Emeralds, the player will also unlock the good ending of the game.

Episode II

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The seven Chaos Emeralds in Sonic the Hedgehog 4: Episode II.

In Sonic the Hedgehog 4: Episode II, the Chaos Emeralds serve again as bonus items the player can collect over the course of the game. They also play no role in the game's story.

In gameplay, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. By collecting all seven Chaos Emeralds, Sonic can turn into Super Sonic in regular Zones.

Sonic Colors

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Sonic using the Chaos Emeralds to transform into Super Sonic in the Wii version of Sonic Colors.

In the Wii version of Sonic Colors, the Chaos Emeralds serve as bonus items that the player can collect over the course of the game. They also play no role in the game's story, which is the first time that it can be done in a 3D Sonic game.

In gameplay on the Wii version of Sonic Colors, the Chaos Emeralds only appear in the Game Land. Beating all stages in each section of Game Land (1-1, 1-2, and 1-3 as an example) will earn the player a Chaos Emerald. Noticeably, upon fully clearing an Area, its Chaos Emerald will appear after passing the Goal Ring. To collect all the Chaos Emeralds, the player must clear all the Sonic Simulator's Acts, which can only be unlocked by collecting all 180 Special Rings in the game. Once the player has all the Chaos Emeralds, they can activate the "Super Sonic" option in the Options Satellite, which lets Sonic transform into Super Sonic in regular Acts.

In the Nintendo DS version of Sonic Colors, Sonic collected the Chaos Emeralds over the course of his adventure in Dr. Eggman's Incredible Interstellar Amusement Park. When Nega-Mother Wisp later emerged and went on a rampage, Sonic used the Chaos Emeralds to transform into Super Sonic and defeat Nega-Mother Wisp.

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The seven Chaos Emeralds in the Nintendo DS version of Sonic Colors.

In gameplay on the Nintendo DS version of Sonic Colors, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. By collecting all seven Chaos Emeralds, the player will unlock the boss fight against Nega-Mother Wisp as Super Sonic, which will become available after beating the game the first time.

Sonic Generations

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The Time Eater getting repelled by a Chaos Emerald.

In the console/PC version of Sonic Generations, the Chaos Emeralds ended up in the White Space. There, four of them got drained of color and life (but not their powers) by the Time Eater and would drift around the White Space. Meanwhile, the purple Emerald was found by Classic Metal Sonic, the yellow Emerald was found by Shadow, and the white Emerald was found by Silver, all of whom were in the White Space too. After arriving in the White Space, Modern Sonic, Classic Sonic, Modern Tails and Classic Tails would collect the Chaos Emerald they came upon. Along the way, the colorless Emeralds were restored to normal by the Sonics. Also, the Emeralds in the hands of Sonic's rivals were handed over upon these rivals' defeat. After the heroes had gotten a couple, the Time Eater encountered the colorless red Emerald, but was repelled by its power. Later, after getting restored, the red Emerald was retrieved by Modern Sonic with the aid of an Air Boost, much to the amazement of Classic Sonic. Soon after, all the Emeralds were obtained, and the quartet of heroes used them to enter the Time Eater's dimension. There, both Sonics got injured by the Time Eater. However, the Sonics' friends quickly appeared and cheered them on. Reacting to the encouragement of the Sonics' friends, the Chaos Emeralds emerged from the Sonics and transformed both of them into Super Sonic, who defeated the Time Eater and restored their universes.

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The Chaos Emeralds surrounding Classic and Modern Sonic.

In gameplay on the console/PC version of Sonic Generations, the Chaos Emeralds are collected as the player progresses with the main campaign. Three of them can be earned after defeating the rival characters. Another three can be earned by defeating the Bosses The last one can be earned by completing Act 1 and 2 of all nine stages. After defeating the Egg Dragoon, the player must place all seven Chaos Emeralds into the broken gears in the Lair of the Time Eater. This will repair the gears and open the gate into the final boss. Also, after clearing the game, the Chaos Emeralds will appear whenever the Super Sonic Skill is activated.

In the Nintendo 3DS version of Sonic Generations, the Chaos Emeralds ended up in the White Space, where they were collected by one-by-one by Modern Sonic. Along the way, the Time Eater encountered the red Emerald, but was repelled by its power. After collecting all the Emeralds, the quartet of heroes were ready to face the Time Eater. During the fight, the Chaos Emeralds reacted to the Sonics' determination and transformed both of them into Super Sonic, who defeated the Time Eater and restored their universes.

In gameplay on the Nintendo 3DS version of Sonic Generations, the player will obtain a Chaos Emerald whenever they clear one of the game's seven Special Stages, which become available after clearing both Acts of a stage. By collecting all seven Chaos Emeralds, the player will unlock the boss fight against the Time Eater.

Sonic Lost World

Chaos Emeralds Lost World

The green Chaos Emerald in Windy Hill in Sonic Lost World (Wii U).

In both the Wii U/PC and Nintendo 3DS version of Sonic Lost World, the Chaos Emeralds serve as bonus items that the player can collect over the course of the game. They also play no role in the game's story.

In gameplay on the Wii U/PC version of Sonic Lost World, the player will automatically earn a Chaos Emerald when they collect all the Red Star Rings found in one of the game's worlds. The collected Chaos Emerald can then be found on its associated world's map, though interacting with it will only show the Chaos Emeralds the player has collected. If the player collects all the Chaos Emeralds, Sonic can transform into Super Sonic in most regular Zones.

ChaosEmeraldLostWorld3DS

The Chaos Emeralds in the Nintendo 3DS version of Sonic Lost World.

In gameplay on the Nintendo 3DS version of Sonic Lost World, Sonic will obtain a Chaos Emerald whenever the player clears one of the game's seven Special Stages. If the player collects all seven Chaos Emeralds, they unlock the ability to turn Sonic into Super Sonic in most regular Zones.

Sonic Runners

Chaos emeralds runners

The Chaos Emeralds scattering in Sonic Runners.

In Sonic Runners, the Chaos Emeralds were targeted by Dr. Eggman, who located them using his Emerald Detectors. After being found, the Emeralds were hooked up to Eggman's energy collecting devices, which drained them of their chaos energy, which Eggman needed to power his latest brainwashing laser cannon. Though Team Sonic managed to reclaim the Chaos Emeralds one-by-one, they were all powerless and inert by the time they got to them. Sonic would later hold onto the Chaos Emeralds during his showdown with Eggman. When Sonic got hit by Eggman's brainwashing laser however, the Chaos Emeralds saved him by reabsorbing their chaos energy from the laser. Sonic subsequently used the Chaos Emeralds to become Super Sonic, and destroyed Eggman's brainwashing laser cannon. Afterward, the Chaos Emeralds were shown scattering once again.

Sonic Forces

SFClassicTransforming

The Chaos Emeralds surrounding Classic Super Sonic in Sonic Forces.

In Sonic Forces, the Chaos Emeralds do not have a role in the game's plot. However, they do appear when Modern Sonic and Classic Sonic turn into Modern Super Sonic and Classic Super Sonic in gameplay.

Artificial Emeralds

Main article: Fake Emerald
Fake chaos emerald

A fake Emerald created by Tails.

It is possible to create synthetic Chaos Emeralds with the same wavelength and properties as the originals, but with less power as demonstrated by Tails. In addition, these fake Emeralds can be used to sabotage devices that require Chaos Emeralds to power them. Also, because it had the same wavelength and properties as the originals, fake Emeralds also allow the user to access Chaos Powers just as a genuine Chaos Emerald would, like Chaos Control.

Number

In the first game of the series, Sonic the Hedgehog, there were six Chaos Emeralds. This was also true for the Game Gear/Master System games Sonic the Hedgehog and Sonic the Hedgehog 2. The number was extended to seven Emeralds in Sonic the Hedgehog 2 for the Mega Drive, and that number has been consistent ever since, with a few exceptions such as most other 8-bit titles.

In the arcade game Sonic the Fighters, in order to travel to the Death Egg II, the player must collect all the Chaos Emeralds. Each character held an Emerald in the "story mode", and to get another one from a different character, they must be defeated in a fight. However, instead of the traditional seven Emeralds, there are eight. The widely accepted reason for this is because there are eight fighters, and so Sega added another Chaos Emerald. Some fans believe that this eighth Emerald is fake, but it is usually treated as a gameplay device rather than a significant plot element.

In Sonic the Hedgehog Spinball, there appeared to be sixteen Emeralds.

Colors

Super-sonic-genesis-ps3-trophy-3656.jpg

The Chaos Emeralds in Sonic the Hedgehog 4.

In the original Sonic the Hedgehog, the six Emeralds were blue, green, yellow, red, pink, and silver. A seventh, purple Emerald then appeared in Sonic the Hedgehog 2. In Sonic the Hedgehog 3, the pink Emerald was replaced with a turquoise one. In Sonic the Fighters, there were eight emeralds, one for each playable character: Sonic (blue), Tails (orange), Knuckles (red), Amy (pink), Bean (green), Bark (yellow), Fang (darker purple), and Espio (violet). The orange emerald was colored yellow again in Sonic Adventure, and the colors of the Emeralds have remained constant ever since, as red, blue, yellow, green, white, turquoise and purple.[122] The white Emerald often appears gray, and Sonic R had both a yellow and an orange Emerald instead of a blue/turquoise one (the Chaos Emerald was blue in the racing course it was found in, but the screen after the race shows it as turquoise). Strangely in Sonic Jump, the turquoise Chaos Emerald was replaced by a black-colored one.

Certain games have used their own unique colors for the emeralds - in the 8-bit version of Sonic the Hedgehog they are light blue, blue in Sonic Sonic, while in Sonic Battle they are all green. In Sonic Chronicles: The Dark Brotherhood the Emeralds were red, light blue, turquoise, pink, yellow, orange and purple.

In other media

Comics

Sonic the Hedgehog Story Comic

Chaos emerald manga

Chaos Emerald in Sonic the Hedgehog Story Comic Volume 1.

Chaos Emerald is mentioned in Sonic the Hedgehog Story Comic Volume 1. According to Doctor Eggman, Chaos Emerald contains unfathomable energy and nobody has ever been able to find one before. With one of it, he'll be able to boil world's largest egg in the world's largest pot, which has been dreaming since as a child. One of Eggman's robots detects a Chaos Emerald from north west of South Island, in Green Hill Zone. Chaos Emerald is never mentioned in later volumes.

Sonic the Comic

STC101-Emeralds

The Chaos Emeralds in the Emerald Chamber from Sonic the Comic #101. Art by Nigel Dobbyn.

In the UK's Sonic the Comic, the Chaos Emeralds were originally green Raw Emeralds from the Sacred Emerald Mine of the ancient Echidnas, but were infused with chaos energy by the Drakon Empire in the distant past. When brought together outside of certain stabilizing conditions (e.g. extreme cold), the Chaos Emeralds generate a chain reaction of chaos energy and warp to the Special Zone.

Six of the Chaos Emeralds were brought to Mobius in the distant past, and subsequently used by Doctor Ovi Kintobor in an attempt to rid Mobius of evil with his Retro-Orbital Chaos Compressor (ROCC). An accident involving the Emeralds and the ROCC transformed Kintobor into Doctor Ivo Robotnik.

The Emeralds were gathered by Sonic and protected from Robotnik, but were eventually returned to the Floating Island and placed in the care of Knuckles, the appointed Guardian of the Chaos Emeralds.

Archie Comics

Seven Chaos Emeralds Archie - Kopi

The Chaos Emeralds, from Sonic the Hedgehog #251.

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Chaos Emeralds were originally said to be physical embodiments of the "Chaos Force", the all-encompassing force of the universe, and were much more numerous. A seemingly rare mineral, they could be found all across the universe, each coming in a different color depending on the celestial body. They are also connected to the "Power Rings", which are by-products of the emeralds. In addition, there exist rare 'Super Emeralds', created from unique Chao.

Modern3DStockArt ChaosEmeralds

The Chaos Emeralds, from Sonic Super Digest #9.

The central planet in the comics' storyline, Mobius, was given its supplies of green Chaos Emeralds during the mysterious event known as the Coming of the Chaos Emeralds. Their power were harnessed to revolutionize the world and gave as well rise to various villains and demi-gods, such as Mammoth Mogul and the Ancient Walkers. For ages, the Chaos Emeralds were a focus of much conflict on Mobius. All the Chaos Emeralds in the universe were eventually brought to Mobius by the villain A.D.A.M., but Super Shadow and Turbo Tails managed to sent them all into the Special Zone. There, the Zone's new ruler, Feist fused all of them into the seven differently colored jewels which he would hand out to those who could complete his challenges.

The seven emeralds were later used by Dr. Eggman and Dr. Wily to reshape reality with the Super Genesis Wave, and though Sonic and Mega Man stopped them, Sonic's multiverse was left heavily altered. In this new reality, the Chaos Emeralds and their background are the exact same as those in the games.

IDW Publishing

Main article: Chaos Emerald (IDW)
IDWChaosEmeraldsCloseUp

The Chaos Emeralds in the IDW Publishing comics.

In the Sonic the Hedgehog comic series and its spin-offs published by IDW Publishing, the Chaos Emeralds are seven gemstones of incredible chaotic power, just like their game counterparts. In this media, their past is identical to their game counterparts', up until after Sonic Forces. They were first seen when Dr. Starline presented them to Dr. Eggman.

Animation

Adventures of Sonic the Hedgehog

Chaos Emeralds in Aosth

The first four Chaos Emeralds from Adventures of Sonic the Hedgehog.

In the Adventures of Sonic the Hedgehog television series, the Chaos Emeralds are five (initially four) green emeralds in different shapes. They are hidden in different time periods, and each emerald focuses on a different power:

In a quest for the first four Chaos Emeralds, Dr. Robotnik rampaged through time to find them, but was stopped at every turn by Sonic and Tails. Regardless, Robotnik still managed to get the emeralds and used their power to become the Supreme High Robotnik, but Sonic, Tails and multiple incarnations of them from across time stopped him and returned the emeralds to their rightful places. Robotnik later discovered a fifth Chaos Emerald, but lost it to Sonic before he could use it.

Sonic Underground

Emerald FoF Underground

A Chaos Emerald in Sonic Underground.

In the Sonic Underground television series, the Chaos Emeralds made an appearance, but very little is known about them. Like in the games, they are a source of incredible power. Described as a green rare emerald variety, only two of them are known to exist.

Knuckles guards one Emerald on the Floating Island. Robotnik tried to steal this one and frame the Sonic Underground for the theft, but his plan failed. Robotnik later acquired another one for his Fortress of Altitude. Due to Sleet and Dingo's treachery however, the Chaos Emerald was broken, forcing the heroes and villains to work together to contain the unstable Emerald fragments before they could destroy Mobius.

Sonic X

Chaos Emeralds Sonic X

The Chaos Emeralds in Sonic X.

In Sonic X, the Chaos Emeralds echoed their role in the games as objects that were sought after by all parties. In this media, the Chaos Emerald is described as a legendary stone that gives one the power to rule the world.[123] Also, all seven being in one place results in them releasing energy that push them away from each other. This is likely this media's way of creating an explanation as to why the Chaos Emeralds end up scattering, as opposed to when in the video games they just seem to scatter for no reason.

Originating from Sonic's world, the Chaos Emeralds came to Earth during a massive Chaos Control amidst a battle between Sonic and Dr. Eggman. There, they were sought by Sonic and his friends to return home while Eggman sought them for various plots to conquer the planet. Eventually though, the Chaos Emeralds returned to the world from whence they when Sonic used them to go home. Six months later, the Chaos Emeralds were targeted by the Metarex, an alien race of cyborgs bent on universal domination, but Sonic and his allies managed to secure them and use them to stop the Metarex.

Trivia

  • Emerald is the name of a specific gem of the beryl variety, a family known for its wide array of possibly colors. "Emerald" is also used in Japan as a generic term for jewels.
  • The current colors of the Chaos Emeralds are based on the three primary colors of light (red, blue, and green), the three secondary colors which are mixtures of the primary colors (red + blue = purple, blue + green = cyan, and green+ red = yellow), and finally gray which is a mixture of all three primary colors (red + blue + green = gray).
  • In Sonic the Hedgehog 2, if the player gets a Game Over (or finishes the game) and starts a new game via the Options menu, the number of Chaos Emeralds he/she had in the previous game is transferred over to the new game.
  • When the colors of the Chaos Emeralds are inverted, they simply swap colors, giving the appearance that the position of the Emeralds simply changed.
  • In most games, when causing a super transformation, the Emeralds surround the users in a circle and starts rotating around the users, before being absorbed.
  • In Sonic the Hedgehog 3, after accessing the Sound Test and entering a code, the player has access to a secret, and very difficult, 8th special stage. Upon completion, this stage yields the gray Emerald. In Sonic the Hedgehog 3 & Knuckles, after accessing the Sound Test, two unused Special Stages could be accessed (one Chaos Emerald stage, with the same layout as the one in Sonic the Hedgehog 3, but with different colored panels, and one Super Emerald Stage). They unlocked a "golden" Emerald (instead of the white one as in Sonic the Hedgehog 3). After that, the player goes on to the Angel Island Zone stage. This Emerald is considered a glitch.
  • In an unused Sonic Colors beta voice clip, Dr. Eggman stated that Chaos Emeralds are less powerful than Hyper-go-on.
    • However, since this line is ultimately unused, it cannot be officially guaranteed.
  • In Sonic the Hedgehog 2, it is possible to collect all seven within Emerald Hill Zone, provided the player is careful with the order in which Star Posts are activated (and very skilled at the Special Stages).
  • The gemstone-appropriate names for colored beryls are red beryl (red), golden beryl or heliodor (yellow), purple beryl (purple), emerald (green), aquamarine (turquoise/light blue), maxixe (deep blue), morganite (peach/pink), and goshenite (white). Some call red beryl bixbite, but this name is discredited.
  • The Chaos Emeralds that appear in the Tikal visions in Sonic Adventure are much larger than the Chaos Emeralds that appear elsewhere in the game.

References

  1. Sonic the Hedgehog (2006)
  2. Sonic Team, Blindlight (24 November 2006). Sonic the Hedgehog. PlayStation 3. Sega. Area/Level: Opening sequence (Sonic Episode). "Dr. Eggman: I've come here to obtain the secret of the Flames of Disaster from you. And to take the miracle gems that are the keys to its secret... The Chaos Emerald!"
  3. Sonic Team, Blindlight (24 November 2006). Sonic the Hedgehog. PlayStation 3. Sega. Area/Level: End of the World. "Elise: Oh Chaos Emeralds, gems of miracles. Please heed my call."
  4. 4.0 4.1 Sonic Runners Episode 50-5: Boiling Point: Final
  5. Super Smash Bros. for Wii U (2014). In-game description of the "Super Sonic" trophy: "The Chaos Emeralds are said to hold enough power to control the whole world. It's that power that turns Sonic into Super Sonic. He turns a glorious golden color and can fly at nearly the speed of light. In his Final Smash, this high-speed flight damages anyone who gets in its way and can even launch them!"
  6. 6.0 6.1 6.2 Sonic the Hedgehog (Sega Mega Drive) Japanese instruction booklet, p. 9-10.
  7. Super Smash Bros. Brawl (2008). In-game description of the "Super Sonic" trophy.
  8. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Station Square. "Tails: I was lucky to find one of the 7 Chaos Emeralds. They have unlimited mystic powers."
  9. 9.0 9.1 BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. "Angel Island's Codex entry: Around four thousand years ago, Angel Island was part of the city known as Mystic Ruins. On Angel Island stood a shrine to the Master Emerald and the Chaos Emeralds. Pachacamac, the chief of Knuckles' clan, tried to steal the Chaos Emeralds and angered its guardian spirit, who became Perfect Chaos. This god-like being virtually destroyed Knuckles' clan in revenge."
  10. Sonic Team, Dimps (September 14, 2007). Sonic Rush Adventure. Nintendo DS. Sega. Level/area: Deep Core. "Dr. Eggman: I never imagined that this sort of power was even possible! Even the Chaos Emeralds and Sol Emeralds can't compare to this! Mwa ha ha ha ha!"
  11. Sonic Team (18 November 2005). Shadow the Hedgehog. PlayStation 2. Sega. Area/Level: Westopolis. "Sonic the Hedgehog: With that Chaos Emerald, you can unlock unlimited power!"
  12. Sonic Team, Blindlight (24 November 2006). Sonic the Hedgehog. Xbox 360/PlayStation 3. Sega. Area/Level: Flame Core (Shadow's Episode). "Shadow the Hedgehog: The crust's energy is out of control... Is it because of the Chaos Emeralds?"
  13. 13.0 13.1 13.2 13.3 13.4 13.5 13.6 BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. "The Chaos Emeralds' Codex entry: Ancient, powerful, and mysterious, the Chaos Emeralds are seven mystical relics tied to the Master Emerald. Each Emerald can float on its own power, but anyone who combines all seven of the Chaos Emeralds can command ultimate power. Many, including Sonic, Knuckles, and Shadow, and others, can even use the power of the seven Chaos Emeralds to transform into Super versions of themselves!

    No one knows where the Chaos Emeralds came from, but the ancient echidna civilizations knew of them and sought their secrets. Even the Fourth Great Civilization, the mysterious civilization that created Emerl and the Gizoids, experimented with Chaos Emeralds. Until recently, the Chaos Emeralds were locked away in hidden places in Sonic's World. The sinister Nocturnus Clan Echidnas, led by Ix, stole them and took them into the Twilight Cage, an alternate dimension where the clan has been imprisoned, never aging, for thousands of years."
  14. Sonic Team, Sonic Team USA (27 February 2004). Sonic Battle. Gameboy Advance. Sega. Area: Emerald Beach (Shadow's Episode). "Sonic the Hedgehog: I've heard that he who collects 7 "Chaos Emeralds" will be granted unlimited energy."
  15. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Green Hill Zone. "Tails: The Chaos Emeralds are powerful gems, Sonic. Someone who knows how to use them could do just about anything with their power!"
  16. 16.0 16.1 Sonic Team, Blindlight (24 November 2006). Sonic the Hedgehog. Xbox 360/PlayStation 3. Sega. Area/Level: White Acropolis. "Blaze the Cat: That's a Chaos Emerald. It's said this gem can transform your thoughts into power. Collect seven and a miracle's supposed to happen."
  17. Sonic Team (25 February 2015). Sonic Runners. iOS. Sega. Area/Level: Episode 50-5. "Tails: Of course! The Chaos Emeralds must be absorbing the energy from the brainwashing laser!"
  18. Sonic Team, Blindlight (24 November 2006). Sonic the Hedgehog. PlayStation 3. Sega. Area/Level: End of the World. "Silver the Hedgehog: Of course! Let's call him back with the power of the Chaos Emeralds! Focus your thoughts on using its power to perform this miracle..."
  19. Sonic Team. Sonic Channel (Japanese). Sega. Archived from the original on 1 July 2008. Retrieved on 25 June 2008.
  20. Sonic the Hedgehog (Sega Mega Drive) Japanese instruction manual, p. 4-5.
  21. Sonic Team (23 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Last Story. "Tails: Chaos only used the negative power of the Emeralds. Sonic, you should be able to harness their real power!"
  22. Sonic Team (23 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Last Story. "Tails: Negative forces aren't the only way to empower the Chaos Emeralds. Our positive feelings toward each other can make them work. Our hearts together form awesome power."
  23. Sonic Team, Dimps (November 22, 2011). Sonic Generations. Nintendo 3DS. Sega. White Space. "Modern Tails: The Chaos Emeralds are more powerful when they're together so..."
  24. 24.0 24.1 24.2 24.3 Sonic Team, Dimps (14 September 2007). Sonic Rush Adventure. Nintendo DS. Sega. Level/area: Ending sequence. "Blaze: Hmmm. So, the, the Chaos Emeralds and the Sol Emeralds are... / Sonic: ...sort of like North and South on a magnet. / Blaze: If they have the power to repel each other, they can attract each other, too. / Sonic: And if misused, the could potentially bring ruin to both worlds. / Blaze: Right. That's what the Eggmen were both saying. / Sonic: So, them, how do you prevent that from happening, Tails? / Tails: Well, I haven't done anything special in particular. They're both extremely stable. Because of that, I was able to put this ship together in such a short time. / Blaze: What do you mean? / Tails: Well, I got to thinking... Doesn't it seem like the Emeralds are trying to help us? / Sonic: Chaos Emeralds...? / Blaze: ...and the Sol Emeralds? / Tails: Yeah. If they weren't, I don't think they'd be nearly as stable as they are. It's almost as if they WANT to be used to do this."
  25. Sonic Team, Dimps (14 September 2007). Sonic Rush Adventure. Nintendo DS. Sega. Level/area: Ending sequence. "Blaze: Do you think that maybe you were brought here for a reason? / Sonic: Brought here? By who? / Blaze: By the Emeralds."
  26. Sonic Team, Dimps (12 November 2010). Sonic Colors. Nintendo DS. Sega. Area/Level: Nega-Mother Wisp. "Sonic: Hey, if Yacker wants me to stop her, I'll stop her! It can't just be a coincidence that the Chaos Emeralds are here."
  27. Sonic Team (25 February 2015). Sonic Runners. iOS. Sega. Area/Level: Episode 50-5. "Tails: They're floating away! / Sonic: Don't worry, Tails. They'll be there for us the next time the world is in danger, I'm sure of it."
  28. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Tails: The Chaos Emeralds are like magnets...they have the power to attract each other. If I can use that to find where Eggman is."
  29. 29.0 29.1 29.2 29.3 Sonic Team, Dimps (15 November 2005). Sonic Rush. Nintendo DS. Sega. "Dr. Eggman: And, the Chaos Emeralds / Dr. Eggman Nega: and the Sol Emeralds are / Dr. Eggman and Dr. Eggman Nega: in a manner, like the North and South magnetic poles. / Dr. Eggman: They can be used like a pair of magnets and be attracted to each other. / Dr. Eggman Nega: Or they can be used to repel the other! / Dr. Eggman: In close proximity, these emeralds call out to each other. / Dr. Eggman Nega: And the power this would generate... It could destroy the world!"
  30. Sonic Team, Dimps (15 November 2005). Sonic Rush. Nintendo DS. Sega. Area/Level: Ending sequence (Extra). "Sonic: Both Eggmen knew the secret of the emeralds, right? It's why the world didn't completely fall apart when the emeralds were together. Everything should be fine since I have the seven Chaos Emeralds. As long as the person holding the emeralds can control them... And knows how to use them, nothing can go wrong. And Blaze... Now you have the power. You understand what I mean, right?
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  63. 63.0 63.1 Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Mystic Ruins. "Big: Huh... er... wha? Froggy, is that you? You're lookin' kinda weird, good buddy. What's up with the tail? Hey, wait a minute! You swallowed my lucky charm."
  64. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Mystic Ruins. "Tails: Without more Emeralds, the monster can't transform, so... It's up to us to find those Emeralds before Eggman does, huh?"
  65. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Mystic Ruins. "Tails: The Tornado's not powerful enough. If I'm gonna get that Egg Carrier, I need to finish my prototype. It needs a Chaos Emerald to work! Looks like I'd better find one, fast!"
  66. Sonic Team (27 June 2003). Sonic Adventure DX: Director's Cut. GameCube. Sega. Area/Level: Mystic Ruins. "Knuckles: The Master Emerald is where it belongs. But Angel Island is still falling! This doesn't make any sense. Maybe... Those Chaos Emeralds... that I brought back with me... have something to do with what's happening."
  67. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Dr. Eggman: Why didn't you show me this before?! What's this...? "Station Square saved from a life-threatening missile attack. The city has awarded its famed prize to the boy who saved Station Square... Miles 'Tails' Prower was given the Chaos Emerald as a testament of his heroic deed at a ceremony held at city Hall."
  68. Sonic Team (18 June 2001). Sonic Adventure 2. Dreamcast. Sega. Area/Level: Radical Highway. "Shadow: I'm Shadow the Hedgehog, the one and only ultimate life form. I took the Chaos Emerald from the national reserve bank, and now the military and police are chasing me. I don't care if they know who I am, because they'll never catch me. It's just a waste of time. There's no time for games. I have to get to get out of here, fast."
  69. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Shadow: To reactivate it... large amounts of energy are necessary. / Eggman: Oh, so that's why we needed the Chaos Emerald. / Shadow: Exactly. To reactivate the machine, we need the seven Chaos Emeralds."
  70. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Shadow: At this rate, the cannon will take too much time to charge up. If you want to unleash its full potential, you'll need all seven Chaos Emeralds."
  71. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Eggman: The core of the Eclipse Cannon is now highly reactive and explosive. This is because of the energy of the Chaos Emeralds is overpowering it. If the colony collides with Earth, it will shatter into pieces like my grandfather predicted!"
  72. Sonic Team (3 May 2002). Sonic Adventure 2: Battle. GameCube. Sega. "Eggman: The Space Colony ARK's position may have shifted due to the amount of energy given off by the Emeralds. We have to stop the energy!"
  73. Sonic Advance (Game Boy Advance) United States instruction booklet, p. 2.
  74. Sonic Team, Dimps (7 June 2004). Sonic Advance. Game Boy Advance. Sega. Area/Level: Opening Sequence. "Narrator: The evil scientist, Dr. Eggman! Dr. Eggman is planning to use the Chaos Emeralds to build Eggman Land. Sonic and his friends must put a stop to his evil scheme! What will happen next?"
  75. 75.0 75.1 Sonic Advance 3 (Game Boy Advance) United States instruction booklet, p. 4.
  76. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Night Babylon (Rouge's episode). "Rouge: The dear doctor has a total of 4 "Chaos Emeralds"."
  77. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Central City (Knuckles' episode). "Rouge: Dr. Eggman has been experimenting with using "Chaos Emeralds" on robot cores."
  78. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Central City (Rouge's episode). "Eggman: These guys are powered by pieces of the "Chaos Emerald." I created "Phi" by using Emerald shards from the Chaos Emerald I crushed!"
  79. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Central City (Rouge's episode). "Eggman: And I programmed them to collect all 7 "Chaos Emeralds"! In no time, I should have all 7 "Chaos Emeralds...""
  80. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Night Babylon (Sonic's episode). "Sonic: Hey, Knuckles! Where are you? We need to borrow your "Chaos Emerald!""
  81. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Night Babylon (Amy's episode). "Emerl: There's another Emerald... / Rouge: It must be the "Chaos Emerald" Shadow has."
  82. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Central City (Rouge's episode). "Rouge: We're almost at "Emerald Town." Our target is the Chaos Emerald in the "Building." According to my data, a jewelry shop there carries a "Chaos Emerald.""
  83. 83.0 83.1 Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Emerald Town (Sonic's episode). "Tails: Well, I know two things. 1: It is powered by Chaos Emeralds. Once we give it more "Chaos Emeralds," it will regain its energy and even be able to speak properly."
  84. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Opening sequence (Sonic's episode). "Eggman: Fight! Why don't you fight?! / Emerl: ... ... ... ... ... ... / Eggman: Dang! You piece of junk! Give me back the "Chaos Emerald" you took! *Grrr* What a piece of junk! / Emerl: ... ... ... / Eggman: That's it! I've already used your data to create a robot that does what I say. So I don't need you anymore! / Emerl: ... ... ... "
  85. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Holy Summit (Sonic's episode). "Tails: His speech and powers will improve with each "Chaos Emerald" we give him!"
  86. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Emerald Town (Tails' episode). "Rouge: Emerl's the world's deadliest weapon! / Tails: Rouge! / Sonic: You! / Rouge: Hey! / Sonic: What are you talking about? / Tails: Yeah, it's the truth! That's what I discovered at the Central Lab! / Sonic: A battle weapon? / Rouge: Yes, and a very lethal one! / Sonic: No, I can't believe it! He's just a robot, right? You could change its insides real quick, and fix this problem, right? / Tails: Actually, he's NOT just a robot... The lab computer got fried when Emerl was connected to it... And we were chased by Guard Robos when we accessed Emerl's data at the Central Lab! / Sonic: Seriously? / Rouge: But there is one way... / Sonic: Well, let me hear it! / Rouge: "Chaos Emeralds"! / Sonic: "Chaos Emeralds"? / Rouge: That's right. Collect all 7 "Chaos Emeralds" and insert them into Emerl. / Sonic: What happens then? / Rouge: Then we can reset Emerl and turn him into an ordinary robot, and erase all his data as a battle weapon."
  87. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Emerald Town (Rouge's episode). "Rouge: There you go. See, that wasn't so hard. Now just open this, and... All right! Thank you! Yeah! Oh, it's gorgeous... / Emerl: ... ... ... / Rouge: What? / Emerl: Chaos Emerald... A new... Power... / Rouge: What? You're speaking now? Hey... Hey! What're you doing? Hey! that's my "Chaos Emerald"! Hey! You stole my Chaos Emerald!"
  88. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Death Egg (Emerl's episode). "Sonic: Emerl!! What's this?! A "Master Emerald"! Where did this come from? I see! We can use this to stop the "Chaos Emeralds" from getting out of control! With the legendary power of the "Master Emerald," we might be able to snap Emerl out of it! We've gotta give it a shot!"
  89. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Death Egg (Emerl's episode). "Cream: Sob... Emerl... / Sonic: H-hey! Don't you cry! Cream! / Cream: Sonic! / Sonic: Come on, don't cry! Emerl is right here! / Cream: ... Yes! As part of the "Emerald shards"."
  90. Sonic Team, Sonic Team USA (5 January 2004). Sonic Battle. Game Boy Advance. Sega. Area/Level: Emerald Town (Knuckles' episode). "Tails: let me see it. If you could get 2 more shards of the same color, you could probably form a whole Emerald. "
  91. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Frontier Canyon Zone (Metal Sonic's story). "Dr. Eggman: Sorry for being so cryptic Shadow, but Eggman Nega is very sneaky. He apparently got some old files from my late grandfather, Professor Gerald. Those writings tell of an interdimensional beast called the Ifrit, and Eggman Nega wants to release it! The key to opening the portal to the Ifrit's dimension is the seven Chaos Emeralds. You must stop him."
  92. 92.0 92.1 Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Mystic Haunt Zone (Rouge's story). "Eggman Nega: Hee hee hee hee...uh, I have no Emerald for you! Now, Rouge. Give me the Chaos Emeralds, as promised. / Rouge: As promised? So you're my... Sorry, I've changed my mind. The Chaos Emeralds are staying with me."
  93. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Frontier Canyon Zone (Shadow's story). "Rouge: I see. Well, I'm certain the person that hired me to collect the Emeralds will protect them."
  94. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Neon Palace Zone (Espio's story). "Espio: If your machine was beeping, that must mean... Yes! The Chao was sitting on the Chaos Emerald. / Rouge: Hey, give that to me! / Espio: If Rouge follows me, then Silver can get the other Chao. Not so fast! You'll have to catch me first!"
  95. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Frontier Canyon Zone (Knuckles's story). "Rouge: Clearly! What powers would the Chao have to save the world? Look! The detector is beeping like crazy. Bet that means there are TWO Chaos Emeralds!"
  96. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Mystic Haunt Zone (Knuckles's story). "Knuckles: Knuckles: Hey, Rouge. Why are at this spooky place? / Rouge: I'm not sure. My client just told me I needed to be here."
  97. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Mystic Haunt Zone (Shadow's story). "Shadow: Doctor, Rouge is in possession of six of the Chaos Emeralds, and she just went toward the mansion."
  98. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Chaotic Inferno Zone (Rouge's story). "Knuckles: Who did you say you were working for... Wait, did you hear that? Look, the portal is opening up! / Rouge: Huh? But to open it, you're supposed to have all seven Emeralds... If we only had six, why is it still opening?"
  99. 99.0 99.1 Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Chaotic Inferno Zone (Shadow's story). "Shadow: A Chaos Emerald was inside you all along?! So that's why it opened! / Metal Sonic: ... / Shadow: Let's do it then. Time to get back to our own world. Chaos Control!"
  100. Backbone Entertainment, Sega Studio USA (13 November 2007). Sonic Rivals 2. PlayStation Portable. Sega. Area/Level: Chaotic Inferno Zone (Rouge's story). "Rouge: We had six Chaos Emeralds! Six! I've never had that many in my life! Now I won't get paid!"
  101. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Metropolis Ground Zero. "Shade: To truly cross into this world, Ix needed to open the wormwhole. And to do that, he needed the Master Emerald."
  102. 102.0 102.1 102.2 BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Metropolis Ground Zero. "Shade: Your military had set up around the base of the island. To conquer Angel Island, Ix needed to bring it to him. He used the Chaos Emeralds to draw the island over Metropolis, where we had set up our base. The plan was to assault the island on our turf, rather than attacking it with legions of soldiers underneath."
  103. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Green Hill Zone. "Tails: Not too long ago, Knuckles came to me for help. Six of the seven Chaos Emeralds had been stolen, and he wanted to set up a trap. When the Marauders came to take the last Emerald, they somehow jammed my trap and overcame Knuckles with sheer numbers! By the time I could get the trap working, they were gone!"
  104. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Kron Colony. "Shade: Lord Ix must have planted one of the Chaos Emeralds here. Maybe he didn't want to keep them all in one place."
  105. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Kron Colony. "Shade: No doubt Ix worked to keep them at each other's throats on purpose. He knew if they teamed up, he'd be doomed.."
  106. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Kron Colony. "Kron Warrior: Crystal here. Brought here to power factory for weapons of war."
  107. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: N'rrgal Colony. "N'rrgal Queen: Lord Ixxx hass givennn us the mmmeannns to defennnd ourselves: a Gem of Power with which we could elimmminnnate the hated Zoah. Should the nnneed arise..."
  108. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Zoah Colony. "General Raxos: Our secret weapon--this "Chaos Emerald"--was a gift from Lord Ix o reward Zoah loyalty and give us an edge againt the hated N'rrgal."
  109. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Zoah Colony. "Amy: Why would Ix give both sides a Chaos Emerald if they're sworn enemies? / Shade: Lord Ix is shrewd. It could be he wants to play them against each other."
  110. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: N'rrgal Colony. "N'rrgal Queen: The Zoah have a nnnew secret weaponnn, rumored to be powerfulll ennnough to destroy the N'rrgal race onnnce annnd for all..."
  111. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: N'rrgal Colony. "N'rrgal Queen: Nnnow nnneather race attacks the other, out of fear that both races will be destroyed. But we do nnnot trust the Zoah to be prudennnt..."
  112. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (You do. But the Overmind has psychically treat the Great Emeralds. You need one of the Great Emeralds on Colony Alpha.)"
  113. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (The Overmind has filled the Emerald with their own psychic powers. As long as you have it equipped, it will give you some protection against my people's abilities.)"
  114. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (But you... such purpose. You seek powerful gems... Yes, the Chaos Emeralds! The Great Emeralds that power the Overmind!)"
  115. 115.0 115.1 BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: Thebes: (The Great Emeralds are kept in Colony Alpha, our main homeworld. But the Overmind plans to move one out here, to Colony Beta.)"
  116. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (The Overmind used to give us mental requests that showed us what to do each day. Each Voxai knew his purpose, and everyone worked together.) (But with the Great Emeralds, the Overmind has the power to completely control our minds! They no longer suggest; they command!)"
  117. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: N'rrgal Colony. "N'rrgal Queen: Without their secret weaponnn, the Zoah would never conquerrr the N'rrgal... With nnno threat from the secret weaponnn, we have nnno nnneed for this Gemmm of Power to deter the ennnemy..."
  118. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (The Overmind knows you are here, but it can't find you... not yet. Maybe your own Emerald shields you from their power.) (It won't protect you forever, but you are far from the Overmind. You should be safe for now.)"
  119. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (The Great Emerald will be delivered to Colony beta very soon. We must move quickly if we want to steal it back!)"
  120. BioWare (30 September 2008). Sonic Chronicles: The Dark Brotherhood. Nintendo DS. Sega. Area/Level: Voxai Colony Beta. "Thebes: (Take the Great Emerald. It will protect you from the Overmind's control while you're on Colony Alpha.)"
  121. Sonic Unleashed (PlayStation 3) European instruction booklet, p. 8.
  122. Sonic Team (25 February 2015). Sonic Runners. iOS. Sega. Area/Level: Episode 50-5. "Narrator: One of the Chaos Emeralds glows white... One of the Chaos Emeralds glows yellow... One of the Chaos Emeralds glows green... One of the Chaos Emeralds glows turquoise... One of the Chaos Emeralds glows blue... One of the Chaos Emeralds glows purple... One of the Chaos Emeralds glows red..."
  123. Sonic X Volume 1 Australia DVD.
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