Complete the game with Sonic, Knuckles, Silver and Shadow.
| Unlockable: | How to unlock: |
| Blue Chaos Cup | Complete all challenges for Death Yard Zone |
| Cyan Chaos Cup | Complete all challenges for Colosseum Highway Zone |
| Green Chaos Cup | Complete all challenges for Forest Falls Zone |
| Grey Chaos Cup | Complete every challenge in the game |
| Purple Chaos Cup | Complete all challenges for Meteor Base Zone |
| Red Chaos Cup | Complete all challenges for Sky Park Zone |
| Yellow Chaos Cup | Complete all challenges for Crystal Mountain Zone |
| Sonic Skin | Complete story mode with Sonic |
| Shadow Skin | Complete story mode with Shadow |
| Silver Skin | Complete story mode with Silver |
| Knuckles Skin | Complete story mode with Knuckles |
| Metal Sonic Skin | Unlock Metal Sonic |
