3DS

Mutant MuddsThe Moon01/30/12
Mutant MuddsUnlockable Power-Ups01/30/12

DS

Game Boy Advance

Final Fantasy I & II: Dawn of SoulsRide a Chocobo01/20/05
Pokemon FireRed VersionDetermining Pokemon's feelings towards you.01/10/05
Pokemon LeafGreen VersionDetermining Pokemon's feelings towards you.01/10/05
Sonic AdvancePast the Screen Boundary - Neo Green Hill Zone Act 103/01/04

PlayStation 2

Tony Hawk's UndergroundPast the Level Boundary - Slam City Jam02/15/04

PlayStation 3

Sega Superstars TennisUnlock Hidden Characters03/21/08

PSP

Grand Theft Auto: Liberty City StoriesMission Unlockables10/26/05
Sonic Rivals 2Unlock Cards12/06/07
Spider-Man 2Passwords07/25/05
Twisted Metal: Head-OnKilling The Big Blue Stadium Music04/29/05

Xbox

Xbox 360

Bullet WitchUnlock Chaos Mode06/11/07
Sega Superstars TennisUnlock Hidden Characters03/21/08
Sonic GenerationsSecret Statue Room11/04/11