|This location exists primarily or exclusively within the Post-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Westside Island is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is an island in the Acorn Archipelago that host Mobotropolis, the capital of the Kingdom of Acorn.
- Casino Night Zone
- Chemical Plant Zone
- Emerald Hill Zone
- Hidden Palace Zone
- Metropolis Zone
- Mystic Cave Zone
- Royal Hills Zone
- Wood Zone
- Westside Island's name comes from West Side Island from the game Sonic the Hedgehog 2, which serves as the game's main setting.
- The locales of Westside Island appeared in the version of reality created by the first Genesis Wave (Sonic the Hedgehog #228-#229). Whether or not these locations were also located on Westside Island in this reality is unconfirmed.