Extras menu:
Beat any of the Story modes with 100% completion to unlock the 'extras' option at the main menu, which contains cutscenes and music from the game. Getting 100% on different episodes opens up new songs in the audio menu.
Play as Shadow The Hedgehog:
Beat the Crisis City level as Sonic.
Play as Silver The Hedgehog:
Beat Silver as a boss using Sonic.
Last Episode:
Beat Sonic, Shadow, and Silver's Story modes to unlock a fourth Episode.
Free mode:
Get an 'S' rank on everyone's levels, bosses, and town missions to open up Free mode.
Extra Free Mode characters:
| Miles "Tails" Prower |
Beat all Town Stage missions |
| Rouge the Bat |
Beat all GUN Commander missions |
| Blaze the Cat |
Beat all Soleana mystery missions |
| Knuckles the Echidna |
Beat all Town Stage missions with an 'S' rank |
| E-123 Omega |
Beat all GUN Commander missions with an "S" rank |
| Amy Rose |
Beat all Soleana mystery missions with an "S" rank |