Kart racing mini-game (Hero side)
Finish Tails' driving quest in the Hero side story
Kart racing mini-game (Dark side)
Finish Rouge's chase mission in the Dark side story
Boss attack mode
Finish the Hero or Dark side story modes
Last stage
Finish the Hero and Dark side story modes. After, go to story
mode and a "Last Stage?" option should be appear in the menu
Unlock Super Sonic and Hyper Shadow
Finish the "Last Stage?" in story mode
Unlock 3D version of the Green Hills Zone, from Sonic The Hedgehog:
Collect all 180 emblems (including Kart, Timed Boss) for all "A" rating.
This will unlock hidden multi-player characters also.
Unlock characters in alternate costuems in kart moe:
Unlock Amy Rose
Finish all of Sonic's levels and missions with an "A" rating
Unlock Metal Sonic
Finish all of Shadow's levels and missions with an "A" rating
Unlock Tikal The Echinda
Finish all of Knuckles' levels and missions with an "A" rating
Unlock Sonic in PSO suit
Finish all of Sonic's levels and missions
Unlock Shadow in alternate costume
Finish all of Shadow's levels and missions
Unlock Tails in the Tornado 1
Finish all of Tails' levels and missions
Unlock Eggman in alternate Eggwalker
Finish all of Eggman's levels and missions
Unlock Knuckles in alternate form
Finish all of Knuckles' levels and missions
Unlock Rouge in alternate costume
Finish all of Rouge's levels and missions
Full pause screen
Press X + Y, while paused the gameplay.
Secret images:
If you insert your game disc into a PC CD-ROM drive, you will find
lots of images from the game.
