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Sonic News Network
Sonic News Network

West Side Island[1] (ウエストサイドアイランド[2] Uesuto Saido Airando?), alternatively spelled as Westside Island,[3] is a location that appears in the Sonic the Hedgehog series. It is an island on Sonic's world and is where Miles "Tails" Prower comes from.[4]


West Side Island, from Sonic the Hedgehog 2 (16-bit).

West Side Island is a piece of land that, as its name suggests, is located in the farthest west in the south of Sonic's world, westwards of South Island.[5] Described as beautiful,[2] the island has a rather mountaineous terrain with fields of green hills and grass[1] spread all over it.[2] Its fauna is mainly made out of non-anthropomorphic Animals, though its flora is not out of the ordinary.

Though West Side Island is dominated by natural areas, artificial territories can be found here as well. Noticeably, one location houses the remmants of an ancient civilization.[6] There are also many giant, advanced metropolises that are sparingly found on the island. More recently, following Dr. Robotnik's invasion of West Side Island, massive industrial sites have been stationed there as well, such as chemical factories[7] and refineries.



It is said that a very long time ago, the people on West Side Island used mystical stones to develop their civilization and achieve prosperity. However, when those people abused the stones' power, their prosperity vanished overnight. It is believed that the gods then sealed the stones away within the island's depths.[1][2] Since then, their remmants would be found in the form of flooded, ancient ruins in Aquatic Ruin Zone.[6]

Sonic the Hedgehog 2

In Sonic the Hedgehog 2, Sonic was looking for new adventures in the Tornado. Discovering West Side Island, he landed on the island to check it out and relax, not paying attention to the fact that Dr. Robotnik had been following him and suspiciously landed on the other side of the island.[1][2]

A few days after, Sonic noticed a shy fox cub tagging behind him, who nervously scurried back into the welcoming shade of the still palm trees when he was spotted. When Sonic was not looking, the peculiar fox barely managed to keep up with the blue hero. The fox's name was Miles Prower, though he was known as "Tails" due to his twin-tails, which often made him the target of bullying. However, something changed in Tails when he saw Sonic come to the island, and he made up his mind that he wanted to be cool like Sonic. Realizing that the young kid was harmless and could actually keep up with him, Sonic allowed Tails to hang around as he freely explored the island.[2]

On an early afternoon, Tails discovered the Tornado stranded at the beach. Being a budding fan of machinery and vehicles, he rushed to take a closer inspection. Suddenly however, an ominous flash occurred in the direction of the nearby forest, followed by a terrific explosion. The wild fire blew away various debris, which Tails avoided by taking cover underneath the Tornado as he witnessed robots violently excavating the area. It soon turned out that Dr. Robotnik had detected the Chaos Emeralds on the island after following Sonic. He thus took the opportunity to kidnap the island's Animals to rebuild his Badnik forces and finish his ultimate weapon: the Death Egg. Robotnik now had control of everything except the seven Chaos Emeralds. Cursing the doctor, Sonic went off into the forest to set things right as Tails followed.[1][2]

Sonic and Tails subsequently journeyed across the Zones of the island as they chased after Robotnik. Eventually, Robotnik made his retreat from the island, ultimately escaping to his Death Egg in space with Sonic in hot pursuit thanks to Tails' support. Not long after, the Death Egg exploded in a bright light that could be seen above West Side Island. Tails later found Sonic with the Tornado in the middle of the sky and thus the island was freed.

Sonic the Fighters

In Sonic the Fighters, a section of West Side Island's Casino Night was used as a fighting arena for a fighting tournament. This arena served as the home field for Fang the Sniper. The victor of the fighting tournament eventually fought here in order to earn the right to use the Lunar Fox for a mission to destroy the Death Egg II.

Sonic Generations

In the console/PC version and Nintendo 3DS version of Sonic Generations, as a side-effect of the Time Eater's time-traveling, a version of West Side Island's Chemical Plant/Casino Night from somewhere across spacetime got transported to White Space where it was drained of color and life.

After ending up in White Space, Classic and Modern Sonic separately paid a visit to Chemical Plant/Casino Night. By speeding through Chemical Plant/Casino Night, the Sonics were able to fix space, thereby restoring Chemical Plant/Casino Night from its lifeless state. When the Time Eater later got destroyed, Chemical Plant/Casino Night was seemingly return to its rightful place in the timeline.

Other game appearances

Sonic Drift 2

Many zones of West Side Island are featured as multiple race tracks in Sonic Drift 2, although once again the island itself is not mentioned at any form. Many of these included Emerald Hill Zone, Hill Top Zone, Casino Night Zone and Mystic Cave Zone. There are also some original tracks as well, that would take place of the island such as Balloon Panic, which would possibly taken place of Emerald Hill Zone.


A miniature version of West Side Island, from Sonic Origins.

  • Emerald Hill Zone - A bumpy, tropical peninsula plain riddled with abandoned emerald mines.
  • Chemical Plant Zone - A factory built to manufacture industrial chemicals (possibly to supply Metropolis).
  • Aquatic Ruin Zone - The half-submerged ruins of an ancient city.
  • Casino Night Zone - A casino full of jackpot machines and similar objects that supply West Side Island with tourism money.
  • Hill Top Zone - A mountainous region of tall "block mountains" and lava-flooded caves.
  • Mystic Cave Zone - An extensive system of crystal mines full of bridges, spikes and other obstacles.
  • Hidden Palace Zone - A mysterious ruin located in the deepest recesses of the island. (2013 re-release only)
  • Oil Ocean Zone - A massive valley flooded by the spillage from various oil rigs.
  • Metropolis Zone - A huge, industrial city made entirely of pipes, mechanical contraptions, and huge factories. It was briefly used by Dr. Robotnik as a Badnik manufacturing plant.

In other media

Books and comics

Archie Comics

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, West Side Island is a location on Sonic's World under the name Westside Island. It is an island in the Acorn Archipelago, with a past virtually identical to its game counterpart's.



  1. 1.0 1.1 1.2 1.3 1.4 Christian Whitehead, Simon Thomley, Sonic Team (12 December 2013). Sonic the Hedgehog 2. iOS. Sega. Area/Level: Instructions, "Story"
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Sonic the Hedgehog 2 (Sega Mega Drive) Japanese instruction booklet, pgs. 4-8.
  3. Sonic the Hedgehog Technical Files
  4. TailsTube #1 (feat. Sonic). YouTube. Sonic the Hedgehog (24 March 2022). Retrieved on 24 March 2022.
  5. Sega, Headcannon (23 June 2022). Sonic Origins. Nintendo Switch. Sega. Area/level: Main menu.
  6. 6.0 6.1 Sonic the Hedgehog 2 (Sega Mega Drive) Japanese instruction booklet, pg. 32.
  7. Sonic the Hedgehog 2 (Sega Mega Drive) Japanese instruction booklet, pg. 31.

Main article (Knuckles in Sonic 2) | Staff | Manuals | Glitches | Beta elements | Gallery | Pre-releases (Nick Arcade, Simon Wai) | Re-releases (2006, 2013, 3D, Sega Ages)

Main article | Manuals | Beta elements | Gallery | Re-releases (2012)

Main article | Script | Staff | Glitches | Beta elements | Gallery

Main article | Script | Staff | Beta elements | Gallery