Bonus characters...
	Disc Artwork...
	Play as Big The Cat ...
	Play as Chao ...
	Play as E-102 Gamma ...
	Play as Super Sonic ...

Successfully complete story mode to unlock more playable characters.

To discover some hidden artwork on the disc, put it into your PC CD-ROM. The images will be labeld C20.bmp and so on.

Purchase all pictures of Tails in Sonic's room to unlock Big The Cat in versus mode.

Purchase all pictures of Knuckles in Sonic's room to unlock Chao in versus mode.

Purchase the last picture of Amy in Sonic's room to unlock E-102 Gamma in versus mode.

Purchase all pictures of Sonic in Sonic's room to unlock Super Sonic in versus mode.