Key Stone

Key Stones are objects that first appeared in Sonic Adventure. They are small figures that can used as keys to open sealed doors or paths by placing them in matching pedestals.

Description

In general, Key Stones are figures that come in sizes ranging from slightly smaller than Sonic's full height to about the size of a head. Each Key Stone have a square rock stand with a figure fixed on top of them, which is usually a lump of crystal, but also sometimes a statuette. All Key Stone types come in different designs and colors. They can be found lying around in specific places in the game's environment.

Key Stones are used to unlock paths and doors blocking the player's path. To unlock such paths with a Key Stone, the player has to grab a Key Stone and take it to a nearby pedestal with colors or symbols matching it and then insert it there by dropping it, which will then unlock the path. If a Key Stone is inserted into a non-matching pedestal, nothing will happen. However, if inserted or just placed in the proximity of its pedestal, the Key Stone will automatically insert itself.

While carrying a Key Stone, a playable character's speed is lowered and their unique actions cannot be performed (e.g. Sonic the Hedgehog's Spin Dash, Tails's Propeller Flight, Sonic the Werehog's Skills etc.).

Game appearances

Sonic Adventure and Sonic Adventure DX: Director's Cut

Key Stones made their first appearance in Sonic Adventure and Sonic Adventure DX: Director's Cut. In these games, the Key Stones are used by the player to open up passages to the Action Stages in the Adventure Fields. Key Stones can be found in the games' Adventure Fields and appear when the player needs it to enter the Action Stage they unlock.

Sonic Adventure and Sonic Adventure DX: Director's Cut feature each a total of four different Key Stones:

Key Stone	Location	Time of Appearance	Action Stage Unlocked
Wind Stone	Mystic Ruins, outside Tails' Lab	After Egg Hornet battle	Windy Valley
Ice Stone	Station Square, Casino area alleyway	After Casinopolis	Icecap
Gold Statue	Mystic Ruins jungle, near the trolly cart	After Chaos 4 battle	Lost World (w/ other statue)
Silver Statue	Mystic Ruins jungle, buried ruins with yellow circles indicating it	After Chaos 4 battle	Lost World (w/ other statue)

In Amy Rose's version of Hot Shelter there are objects called power cubes which works like Key Stones and are used at two points in the Action Stage. When the player inserts a set of four different colored power cubes into their matching fixture, it will unlock new paths.

Sonic Adventure 2

In Sonic Adventure 2 and Sonic Adventure 2: Battle, a variant of the Key Stones called the Gate Key appears in Pyramid Cave. These Key Stones are used to open Gate Key Doors which block obligatory paths through the Stage. One Gate Key is needed for each door which is always located in the nearby vicinity.

Sonic Unleashed

In the Xbox 360/PlayStation 3 version of Sonic Unleashed, Key Stones only appear in the Nighttime Action Stages where Sonic the Werehog is playable, and resemble red, blue, green or yellow crystals.

Here, the Key Stones are used to solve puzzles inside the Action Stages by finding a certain number of hidden Key Stones and then use them to unlock paths for the player to proceed down. While most doors open and mechanics only need one or two of Key Stones, major doors will need four in total.

Gallery

Gallery
The Wind Stone located near Windy Valley's entrance. The Ice Stone placed near the Icecap entrance. The Silver Statue near the portal to Lost World. The Gold Statue near the portal to Lost World. The Gate Key in Sonic Adventure 2. Sonic the Werehog holding a Key Stone in Sonic Unleashed. Add a photo to this gallery

Sonic Adventure

Playable characters		Sonic (Super Sonic) \| Tails \| Knuckles \| Amy \| E-102 Gamma \| Big \| Metal Sonic*
Non-playable characters		Dr. Eggman \| Beta (Mark II) \| Chao \| Chaos (Chaos 1, Chaos 2, Chaos 4, Chaos 6, Perfect Chaos) \| Cream* \| Delta \| Epsilon \| Froggy \| Grandma \| Mr. Know-It-All \| Pachacamac \| Tikal \| Unnamed Sonic robot* \| ZERO \| Zeta \| Animals (Deer, Elephant, Gorilla, Kangaroo, Koala, Lion, Mole, Parrot, Peacock, Penguin, Rabbit, Seal, Sea Otter, Skunk, Swallow)
Adventure Fields		Egg Carrier \| Mystic Ruins \| Station Square
Action Stages		Emerald Coast \| Windy Valley \| Casinopolis \| IceCap \| Twinkle Park \| Speed Highway \| Red Mountain \| Sky Deck \| Lost World \| Hot Shelter \| Final Egg
Sub Games		Sky Chase \| Sand Hill \| Hedgehog Hammer \| Twinkle Circuit \| Boss
Enemies		Beat \| Bladed Spinner \| Boa-Boa \| Buyoon \| Cart Kiki \| Cop Speeder \| Egg Keeper \| Electro Spinner \| Fighter Aircraft A \| Fighter Aircraft B \| Gola \| Ice Ball \| Icecap's unnamed aircraft \| Kiki \| Leon \| mechanical fish \| Pirate \| Rhinotank \| Sky Deck's unnamed jet fighter \| Spiky Spinner \| Sweeper
Bosses		Chaos 0 \| Chaos 2 \| Chaos 4 \| Chaos 6 \| E-101 Beta \| E-101 Mark II \| E-102 Gamma \| E-103 Delta \| E-104 Epsilon \| E-105 Zeta \| Egg Carrier \| Egg Hornet \| Egg Viper \| Egg Walker \| Knuckles the Echidna \| Perfect Chaos \| Sonic the Hedgehog \| ZERO
Moves/ Techniques	Playable characters	Bolt of lightning \| Climb \| Dig \| Flight Mode \| Glide \| Hammer Attack \| Hammer Jump \| Hover \| Homing Attack \| Homing Missile Launch \| Jump Attack \| Laser Gun \| Light Speed Attack \| Light Speed Dash \| Lure Attack \| Maximum Heat Knuckles Attack \| Pick \| Propeller Flight \| Punch Attack \| Rapid Tails Attack \| Spin Dash \| Spin Hammer Attack \| Spin Jump \| Tails Attack
Moves/ Techniques	NPCs	Arm Punch \| Bomb Attack \| Bomb Gun Attack \| Charge \| Double Punch \| Earthquake Attack \| Electric Arm \| Energy Ball Attack \| Flame Thrower Attack \| Guiding Missiles \| Instantaneous Liquefaction \| Laser Beam Attack \| Homing Tail Slice \| Inhale Attack \| Marble Attack \| Phantom Shadow Move \| Punch \| Quarter Attack \| Scorpion Attack \| Shockwave Attack (Chaos 6) \| Sonic Boom \| Spin Attack \| Spinning Spike Attack \| Spouting Attack \| Squash Roll Attack \| Swing Punch
Gimmicks and obstacles		Bumper \| Bumper Car \| Cannon \| Conveyor Belt \| Crank \| Dash Panel \| Dash Ring \| Drum Can \| Explosion Trap \| Fan \| Flipper \| Fountain \| Goal Balloon \| Hanging Bell \| Helicopter \| Hint Box \| Hint Orb \| Icicle \| Iron ball \| Jump Panel (plate) \| Jump Panel (ramp) \| Laser field \| Lit Panel \| Mirror \| Monkey Detonation Switch \| Orca \| Power cube \| Rocket \| Satellite \| Slot machine \| Spring \| Spring Catapult \| Switch \| Teleporter \| Trick Jump Panel \| Wide spring \| Wind Path \| Zip Line
Objects	General	Air Bubble \| Capsule \| Cart pass \| Chao Egg \| Chaos Emerald \| Doll \| Emblem \| Emerald Shard \| Employee ID Card \| Item Box (5 Rings, 10 Rings, Extra Life, High-Speed Shoes, Invincibility, Lightning Shield, Random Rings, Shield, Smart Bomb) \| Key Stone (Gold Statue, Ice Stone, Silver Statue, Wind Stone) \| Point Marker \| Ring \| Sandboard \| Snowboard \| Sonic Token
Objects	Level Up Items	Ancient Light \| Crystal Ring \| Fighting Gloves \| Jet Anklet \| Jet Booster \| Laser Blaster \| Life Belt \| Light Speed Shoes \| Long Hammer \| Lure \| Power Rod \| Rhythm Badge \| Shovel Claw \| Warrior Feather
English voice actors		Ryan Drummond (Sonic) \| Corey Bringas (Tails) \| Michael McGaharn (Knuckles) \| Deem Bristow (Eggman) \| Jennifer Douillard (Amy) \| Jon St. John (Big) \| Elara Distler (Tikal, Station Square Train Voice, Default Menu Voice) \| Steve Broadie (Gamma, Pachacamac, Mystic Ruins Train Voice) \| Tomoko Sasaki (Chao)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Kazuki Hayashi (Tails) \| Nobutoshi Canna (Knuckles) \| Chikao Ōtsuka (Eggman) \| Taeko Kawata (Amy) \| Shun Yashiro (Big) \| Kaori Asoh (Tikal) \| Jōji Nakata (Gamma) \| Tōru Ōkawa (Pachacamac) \| Kaho Kōda (Station Square Train Voice) \| Nobutoshi Canna (Mystic Ruins Train Voice) \| Elara Distler (Default Menu Voice) \| Tomoko Sasaki (Chao)
Music	Songs	Believe In Myself \| It Doesn't Matter \| Lazy Days \| My Sweet Passion \| Open Your Heart \| Unknown from M.E.
Music	Albums	Sonic Adventure Original Sound Track (Digi-Log Conversation) \| Sonic Adventure Remix \| Sonic Adventure: Songs With Attitude Vocal Mini-Album \| Sonic Adventure Original Soundtrack 20th Anniversary Edition \| Passion & Pride: Anthems with Attitude from the Sonic Adventure Era
Other		777 Slots Pinball \| Angel Island \| Auto Running \| Black Market \| Card & Pinball \| Chao Garden (Station Square Garden, Mystic Ruins Garden, Egg Carrier Island) \| Chao Race \| Chao Stadium \| Chao in Space \| Chao Machine \| Chao Search* \| Corkscrew loop \| Debug Mode \| E-100 Series \| Egg Carrier \| Egg Carrier 2 \| Emerald Radar \| Freeze \| Life gauge \| Mission Mode \| Mystic Ruins \| Shrine of Knuckles's race \| Shuttle loop \| Sonic Adventure (LCD) \| Station Square \| Station Square Police Department \| Tails' Lab \| Tornado \| Tornado 2 \| Transporter Machine Exclusive to Sonic Adventure DX: Director's Cut*.

Sonic Adventure 2

Playable characters		Sonic (Super Sonic) \| Tails \| Knuckles \| Amy* \| Shadow (Super Shadow) \| Rouge \| Eggman \| Big^ \| Tikal \| Chaos* \| Dark Chao Walker* \| Chao Walker* \| Metal Sonic*
Non-playable characters		Chao (Dark Chao, Hero Chao, Chaos Chao) \| Gerald \| Maria \| President \| Secretary \| Sigma-Alpha 2 \| Researcher \| Animals (Bat, Bear, Boar, Cheetah, Condor, Dragon, Gorilla, Half Fish, Parrot, Peacock, Penguin, Phoenix, Rabbit, Raccoon, Seal, Sea Otter, Sheep, Skeleton Dog, Skunk, Tiger, Unicorn)
Stages	Hero	City Escape \| Wild Canyon \| Prison Lane \| Metal Harbor \| Green Forest \| Pumpkin Hill \| Mission Street \| Aquatic Mine \| Route 101 \| Hidden Base \| Pyramid Cave \| Death Chamber \| Eternal Engine \| Meteor Herd \| Crazy Gadget \| Final Rush
	Dark	Iron Gate \| Dry Lagoon \| Sand Ocean \| Radical Highway \| Egg Quarters \| Lost Colony \| Weapons Bed \| Security Hall \| White Jungle \| Route 280 \| Sky Rail \| Mad Space \| Cosmic Wall \| Final Chase
	Misc.	Cannon's Core \| Green Hill
	2P Stages	Downtown Race \| Grind Race \| Planet Quest \| Pool Quest \| Deck Race \| Pyramid Race
Enemies	G.U.N.	Blue Eagle \| Bomb Beetle \| Bomb Wing \| Gold Beetle \| Gun Hawk \| Gun Beetle \| Gun Hawk \| Gun Hunter \| Gun Wing \| Hornet-3 \| Hornet-6 \| Hornet-9 \| Laser Hawk \| Laser Hornet \| Laser Hunter \| Mono Beetle \| Phoenix \| Rhino Cannon \| Rhino Jet \| Rhino Metal \| Rhino Spike \| Shield Hunter \| Sky Hawk \| Spark Beetle \| Spring Beetle
	Badniks	Buzz Bomber \| Chopper \| E-1000 \| Gola \| Unidus \| Kiki
	Misc	Artificial Chaos (Artificial Chaos P-1, Artificial Chaos P-100, Cell, Float Type, Guard Type) \| Boo \| Boom Boo
Bosses		B-3x Hot Shot \| Biolizard \| Dr. Eggman \| Egg Golem \| F-6t Big Foot \| Finalhazard \| King Boom Boo \| Knuckles \| R-1/A Flying Dog \| Rouge \| Shadow \| Sonic \| Tails
Moves/Techniques		Amy Flash* \| Black Shield* \| Black Wave* \| Booming Missile* \| Bounce Attack \| Captive Light* \| Chaos Bind* \| Chaos Control \| Chaos Impact* \| Chaos Screw* \| Chaos Spear \| Chaos Strike* \| Charm Ray* \| Crazy Rush* \| Crouch \| Dark Finish* \| Dark Omochao* \| Dig \| Drill Claw \| Drill Drive \| Fire Somersault \| Glide \| Grind Step \| Grinding \| Hammer Punch* \| Heaven's Justice* \| Hell Bomber* \| Hip Drop* \| Hover \| Homing Attack \| Jump Dash \| Kick/Kick Attack \| Knuckle Spin* \| Laser Missile* \| Light Attack \| Light Speed Dash \| Lock-on \| Lock-On Missile \| Magic Hands \| Omochao \| Pick \| Power Flash* \| Power Laser* \| Propeller Punch \| Punch (Eggwalker) \| Punch/Punch Attack \| Rocket Launcher \| Rumble Launcher* \| Screw Kick \| Somersault \| Sonic Wind* \| Speed Up* \| Spin Jump \| Spin Dash \| Spiral Upper \| Storming Heart* \| Super Sonic Boost \| Swim \| Thunder Arrow* \| Time Stop* \| Volkan Cannon \| Wrath of Gaia* \| Zap Laser*
Gimmicks and obstacles		Ancient Ruin \| Ball Switch \| Bungie Vine \| Dash Panel \| Dynamite \| Egg Beetle \| Gravity Control Switch \| Green energy fluid \| Grind Rail \| GUN Military Truck \| High-speed warp tube \| Hint Box \| Hourglass \| Iron ball \| Jump Plate \| Laser field \| Missile \| Pipe \| Propeller Spring \| Pulley \| Rocket \| Safe \| Spikes \| Spinning drum \| Swing Bar \| Time Stop Switch \| Turtle \| Warp Hole \| Warp Wall \| Weight \| Wide spring
Objects	General	Balloon \| Chao Egg \| Chao Key \| Chaos Emerald \| Chaos Drive \| Container (Cage, Chao Container, Steel Container, Unbreakable Container, Wooden Container) \| Emblem \| Emerald Shard \| Goal Ring \| Item Box (5 Rings, 10 Rings, 20 Rings, Bomb, Extra Life, Health, High-Speed Shoes, Invincibility, Magnetic Barrier, Shield) \| Key Stone (Gate Key) \| Meteorite \| Outfit \| Point Marker \| Ring \| Snowboard
Objects	Level Up Items	Air Necklace \| Air Shoes \| Ancient Light \| Bazooka \| Booster \| Bounce Bracelet \| Flame Ring \| Hammer Gloves \| Iron Boots \| Jet Engine \| Large Cannon \| Laser Blaster \| Light Speed Shoes \| Magic Gloves \| Mystic Melody \| Pick Nails \| Protective Armor \| Shovel Claw \| Sunglasses \| Treasure Scope
English voice actors		Ryan Drummond (Sonic) \| Connor Bringas (Tails) \| Scott Dreier (Knuckles/GUN Soldiers) \| Jennifer Douillard (Amy Rose) \| David Humphrey (Shadow the Hedgehog) \| Lani Minella (Rouge/Omochao) \| Deem Bristow (Doctor Eggman) \| Moriah Angeline (Maria Robotnik) \| Marc Biagi (Gerald/GUN Soldiers) \| Steve Broadie (President) \| Shelly Fox (Default menu voice) \| Jon St. John (Big) \| Elara Distler (Tikal) \| Tomoko Sasaki (Chao)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Kazuki Hayashi (Tails) \| Nobutoshi Canna (Knuckles) \| Taeko Kawata (Amy) \| Kōji Yusa (Shadow) \| Rumi Ochiai (Rouge) \| Chikao Ōtsuka (Eggman ) \| Etsuko Kozakura (Omochao) \| Yuri Shiratori (Maria) \| Kinryū Arimoto (President) \| Shun Yashiro (Big) \| Shelly Fox (Default menu voice) \| Tomoko Sasaki (Chao)
Music	Songs	A Ghost's Pumpkin Soup \| Believe In Myself \| Deeper \| Dive into the Mellow \| E.G.G.M.A.N. \| Escape from the City \| Fly in the Freedom \| For True Story \| It Doesn't Matter \| Kick the Rock! \| Live and Learn \| My Sweet Passion \| Rhythm And Balance \| Space Trip Steps \| Supporting Me \| The Supernatural \| Throw It All Away \| Unknown from M.E. \| Vengeance is Mine
Music	Albums	Multi-Dimensional Sonic Adventure 2 Original Sound Track \| Sonic Adventure 2 Vocal Collection: Cuts Unleashed \| Sonic Adventure 2 Official Soundtrack \| Sonic Adventure 2 Battle - Sampler \| Sonic Adventure 2 Original Soundtrack 20th Anniversary Edition \| Passion & Pride: Anthems with Attitude from the Sonic Adventure Era
Other		Angel Island \| Auto Running \| Black Market \| Central City \| Chao Adventure^ \| Chao Adventure 2^ \| Chao Garden (Dark, Hero, Neutral) \| Chao in Space \| Chao Kindergarten \| Chao Machine \| Chao Race \| Chao Stadium \| Chao Transporter^ \| Chao World \| Corkscrew loop \| Cyclone \| Eclipse Cannon \| Eggman Bombom \| Eggwalker \| Emerald Radar \| Fake Emerald \| Gerald Robotnik's diary \| Health Gauge \| Hi-Speed Shoes \| Kart Race \| Prison Island \| Project Shadow \| Rank \| Shuttle loop \| Space Colony ARK \| Station Square \| Teleporter \| Totem Pole \| Winding Tunnel Appears or is playable only in the 2P mode ^ Dreamcast version of Sonic Adventure 2* only

Sonic Unleashed

Characters		Sonic (Super Sonic, Sonic the Werehog) \| Chip (Gaia Colossus) \| Tails \| Amy \| Dr. Eggman \| Professor Pickle \| Dark Gaia (Perfect Dark Gaia)
Town Stages/Villages		Apotos \| Mazuri \| Spagonia \| Chun-nan \| Holoska \| Shamar \| Empire City* \| Adabat \| Eggmanland
Action Stages/Stages		Windmill Isle \| Savannah Citadel* \| Rooftop Run \| Dragon Road \| Cool Edge \| Arid Sands \| Skyscraper Scamper* \| Jungle Joyride \| Eggmanland
Residents	Apotos	Alexis \| Anastasia \| Eric \| Gregorios \| Hot Dog Vendor* \| Ice Cream Vendor \| Lambros \| Lucas* \| Milos* \| Sandra
	Spagonia	Aida* \| Barbara \| Ciccio \| David \| Denise \| Dora \| Elio* \| Federica \| Franco* \| Gigi \| Hot Dog Vendor* \| Ippolita \| Irma* \| Josef \| Lilli* \| Lucia \| Marcantonio* \| Mauro \| Natalia* \| Otto \| Professor Pickle \| Professor Pickle's Assistant \| Raimondo
	Mazuri	Ana \| Essie \| Gwek \| Hog Dog Vendor* \| Kofi \| Kwami \| Kwod \| Yawa \| Yaya
	Chun-nan	Chun \| Hot Dog Vendor* \| Hualin \| Jinlin* \| Lin \| Shuifon \| Wang* \| Yilin \| Zonshen
	Holoska	Hot Dog Vendor* \| Jari-Pekka \| Jari-Thure \| Marketa \| Sarianna \| Ursule
	Shamar	Ara \| Dimah \| Ehsan \| Erhan \| Hizir \| Hot Dog Vendor* \| Iman \| Labib \| Latif \| Layla \| Mufid \| Musaid \| Raniya \| Sa'id \| Sadiq \| Safi \| Samia \| Sammar \| Shadi \| Utba \| Yasmine
	Empire City	Boss* \| Brenda* \| Charles* \| Def Big* \| Elizabeth* \| Hot Dog Vendor* \| Li'l Kate* \| Louie Montaine* \| Robert*
	Adabat	Hot Dog Vendor* \| Jamal \| Kaeo \| Nagi \| Rudi \| Teanchai
	Eggmanland	EF-DC1998* \| EF-MD1991* \| EF-XB2006* \| Hot Dog Vendor*
	Misc.	Baker \| Lah \| Su* \| Uh* \| Wentos*
Enemies	Eggman's Machinery	Aero-Cannon \| Aero-Chaser \| Egg Blizzard \| Egg Burst \| Egg Fighter \| Egg Fighter: Knight (Electric shield, Spring shield) \| Egg Fighter: Shield (Electric shield, Spring shield) \| Egg Fighter: Sword* \| Egg Flame \| Egg Launcher (H) \| Egg Launcher (H+V) \| Egg Launcher (V) \| Egg Shackle \| Egg Shooter \| Egg Typhoon \| Gold Aero-Cannon \| Interceptor \| Little Fighter* \| Mole Cannon \| Spinner \| Thunder Ball \| Thunder Spinner
Enemies	Dark Gaia's minions	Big Mother \| Cure Master* \| Dark Bat \| Dark Bat Sniper \| Dark Eel* \| Dark Fright \| Dark Master** \| Deep Nightmare \| Evil Flower* \| Fire Master \| Fright Master \| Killer Bee \| Lightning Master \| Little Rex \| Nightmare \| Power Master* \| Red Fright \| Red Killer Bee \| Red Nightmare \| Red Deep Nightmare \| Red Rex \| Red Titan \| Spike \| Thunder Bat \| Titan
Bosses		Egg Beetle \| Egg Cauldron* \| Egg Devil Ray \| Egg Dragoon \| Egg Lancer \| Dark Gaia \| Dark Gaia Phoenix \| Dark Guardian \| Dark Moray \| Perfect Dark Gaia
Moves/ Techniques	Sonic	Air Boost \| Crouch \| Foot Sweep* \| Grind Step \| Grinding \| Homing Attack \| Hop \| Jump Dash \| Light Speed Dash \| Slide \| Skydiving \| Sonic Boost \| Sonic Drift \| Spin Jump \| Stomp \| Quick Step \| Wall Jump
	Werehog	Dash \| Double Jump \| Grab \| Guard \| Unleashed Mode \| Wall Shuffle
	Misc.	Boost \| Drill Attack \| Super Sonic Boost \| Turbo Boost
Skills	Straight attacks	Donkey Kick Combo* \| Double Axle Combo* \| Double Kick Combo* \| Feral Were-Hammer* \| Knuckle Sandwich Combo* \| Sho-Hog-Ken* \| Unleashed Knuckle Sandwich* \| Vertical Were-Hammer* \| Were-Hammer* \| Werewheel Rush*
	Hook attacks	Earthshaker* \| Egg Scrambler* \| Feral Wild Whirl* \| Rolling Kick Combo* \| Sho-Claw-Ken* \| Ultimate Wild Combo* \| Unleashed Wild Combo* \| Wereclap* \| Wild Whirl* \| Wild Whirl Were-Hammer*
	Aerial attacks	Aerial Claw Slash* \| Aerial Claw Slash and Spin* \| Aerial Piledriver* \| Crescent Moon Strike* \| Diving Bodypress* \| Flying Double-Punch* \| Flying Double-Punch Crush* \| Hurricane Combo* \| Shooting Star Combo* \| Typhoon Combo*
	Special attacks	Comet Punch* \| Missile Punch* \| Spinning Needle Attack* \| Tricky Tornado Uppercut* \| Triple Wild Claw* \| Were-Claw Charge* \| Were-Cyclone* \| Were-Rush* \| Were-Tornado* \| Wild Werewhip*
	Wii/PS2	Beatdown \| Claw Charge \| Crescent Moon Strike \| Earthshaker \| Wereclap \| Were-Hammer \| Were-Claw \| Were-Wallop \| Wild Claw \| Wild Whirl**
Level up items		Air Boost Shoes* \| Light Speed Dash Shoes* \| Stomping Shoes* \| Wall Jump Shoes*
Objects		1UP \| 5 Ring Bonus \| 20 Rings** \| Art Book* \| Audio System \| Balloon \| Big 50 Ring** \| Blue Tea* \| Blue spring \| Bobsled \| Bookshelf* \| Bomb \| Buggy** \| Buoy \| Check Point \| Chaos Emerald \| Chaos Orb* \| Container (Explosive crate, Steel Container, Wooden Container) \| Conveyor Belt \| Crane Lift \| Crank \| Crystal Ball* \| Dark Energy Key** \| Dark Gaia Force \| Dash Panel \| Dash Rail \| Dash Ring \| Door \| Edible item (Apple, Banana, Canned Juice, Chai, Chili Dog, Donut, Sundae Supreme) \| Fountain \| Gaia Key* \| Giant spear** \| Goal Ring \| Gift* \| Gramophone* \| Green Tea* \| Grind Rail \| Hanging vine \| Horizontal Bar \| Hourglass* \| Icicle \| Iron ball \| Item Capsule** \| Jump Selector \| Key Stone* \| Laser field \| Lever \| Lovely Ring* \| Maiden Statue* \| Miles Electric \| Moon Tablet** \| Movable box \| Moving Crate \| Old Necklace* \| Planet Tablet** \| Pick-Me-Up* \| Pretty Bouquet* \| Power Shield* \| Rainbow Ring \| Ramp \| Record* \| Red Tea* \| Ring \| Shield Charge* \| Snowblower \| Souvenir* \| Spike Trap \| Spikes \| Springboard/Spring \| Springpole \| Sun and Moon Medals \| Sun Tablet** \| Super Claw* \| Super Ring \| Switch \| Thorn Spring \| Tornado-1 \| Trap Spring \| Turquoise Tea* \| TV* \| Videotape* \| Violet Tea* \| White Tea* \| Wide spring \| Yellow Tea* \| Zip Line
English voice actors		Jason Griffith (Sonic, Sonic the Werehog, Prof. Pickle's Assistant) \| Amy Palant (Tails) \| Lisa Ortiz (Amy) \| Anthony Salerno (Chip) \| Mike Pollock (Eggman, Zonshen) \| Christopher Collet (Assistant robot) \| Dan Green (Ice Cream Vendor, Prof. Pickle)
Japanese voice actors		Jun'ichi Kanemaru (Sonic) \| Chikao Otsuka (Eggman) \| Chō (Prof. Pickle) \| Ryo Hirohashi (Tails) \| Taeko Kawata (Amy) \| Tomokazu Seki (Sonic the Werehog) \| Ryōko Shiraishi (Chip)
Planetary Pieces		Endless Possibility \| Dear My Friend
Other		Auto Running \| Boost Gauge \| Boss Gate \| Boost Gauge \| Chao* \| Chaos Energy Cannon \| Chun-nan's Treasure \| Collection Room* \| Combo \| Critical Attack \| Dark Energy Force Field** \| Don Fachio* \| Doctor Eggman's chair \| Earth \| Eggman Fleet \| Egg Dragoon \| Egg Mobile \| Entrance Stage* \| Exorcisms \| Experience Point \| Freeze \| Gaia Gate \| Gaia Manuscripts \| Gaia Temple \| Gaia Temple guardian \| Hallowmoon \| Havok \| Health Gauge \| Hint Ring \| Orb Result** \| Real-Time Interaction \| Ring Energy Gauge \| Shield Gauge \| Shop* (Counter of Dreams 2, Eggshop, Flying Fish Beach Shop, Golden Trading Company, Josef's, Surfside Seagull Sundries, Traveling Salesman Wentos, Treeshade, Ursule's Trading Post, Wang's Emporium) \| Shuttle loop \| Sonic: Night of the Werehog \| Sonic World Adventure (manga) \| Spagonia University \| SPD \| Rank \| Time of awakening \| Tornado Defense* \| Unleashed Gauge "" Exclusive to Xbox 360/PlayStation 3 version "*" Exclusive to Wii/PlayStation 2 version.