Sonic Cheats

WARNING: These cheats are subject to spoil the game. Please only use these cheats if you are desperate.

Activate cheats and unlock hidden characters:

Enter this password: 595313131313131 and press ENTER
Go to Cheats menu, you'll be able to select:

Sonic run 2: Sonic has cool looking run
Tails follow: Tails follows other characters, does nothing
Behind: go behind scenery (use for a more challenging game)
Big cheese: Cheese gets big
Moon: Little gravity (makes beating bosses VERY easy)
Jukebox: Choose music while paused

Game completion codes:

Sonic: 115310101010101
Knuckles: 115010131010101
Tails: 115013101010101
Cream: 211010131310101