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- Emerald Hill Zone
- Chemical Plant Zone
- Aquatic Ruin Zone
- Casino Night Zone
- Hill Top Zone
- Mystic Cave Zone
- Oil Ocean Zone
- Metropolis Zone
- Royal Hills Zone
- Wood Zone
- Westside Island was the main setting for the Genesis video game Sonic the Hedgehog 2.
- The locales of Westside Island appeared in the version of reality created by the first Genesis Wave (StH#228-#229).
- In the Pre-SGW reality, many of the zones currently associated with Westside Island were situated on the continent of Northamer.