Sonic the Fighters
South Island is the first arena in the Sonic the Fighters arcade video-game.
It is the very first arena in story mode, and is where the player character faces Knuckles the Echidna. The arena is set on a small island plateau, in an area that looks mostly like the Green Hill Zone. If the player plays as Knuckles here, the player will fight a shadow colorless Knuckles.
- Like most of the first levels in the Sonic the Hedgehog video-game series, South Island has a similar appearance to Green Hill Zone.