Dreamcast

Rayman 2: The Great EscapeSecret Codes05/29/02

Game Boy Advance

Sonic Advance 3Unlock Bosses in Time Attack05/30/04

GameCube

Sonic Gems CollectionHidden Pictures08/23/05

Genesis

Sonic the Hedgehog 2Night Mode10/06/02

Wii

Sonic and the Secret RingsUnlockable Awards02/27/07