DS

Jump Ultimate StarsUnlock Stages05/19/08

Game Boy Advance

Elemix!Expert Mode07/25/05
Kirby & the Amazing MirrorUnlockables04/18/04
Monster Rancher AdvanceSecret Monsters02/03/02

GameCube

Viewtiful Joe: Red Hot RumbleNew Stages for Battle Mode11/28/05

PC

Harry Potter and the Sorcerer's StoneJump Higher12/26/01
Harry Potter and the Sorcerer's StoneResore Health12/26/01
Harry Potter and the Sorcerer's StoneSee Fred and George's 'Experiments'12/26/01
Harry Potter and the Sorcerer's StoneTurn on/off debug mode12/26/01
Melty Blood Re-ACT Final TunedFight Aozaki Aoko01/30/07
Melty Blood Re-ACT Final TunedFight G-Akiha anytime01/30/07
Melty Blood Re-ACT Final TunedStory Mode Endings01/30/07

PlayStation 2

Growlanser GenerationsSecret Level 2 M2 Gem08/23/05
Growlanser GenerationsUnlock 'Bonus' Features08/10/05
Growlanser GenerationsUnlock the Growlanser II characters in Growlanser III08/09/05
SoulCalibur IIINew weapon disciplines for Custom Characters11/01/05
Wild Arms Alter Code: FEX Keys08/09/06
Wild Arms Alter Code: FHidden Dungeon 'Abyss'08/09/06
Wild Arms Alter Code: FOptional Boss Fights04/06/06

PSP

Every Extend ExtraNew Single Player Modes02/20/07

Super Nintendo

Kirby's Dream CourseMedal Rewards03/23/04

Wii

Dokapon KingdomGallery Mode10/28/08

Xbox

Star Wars: Knights of the Old RepublicRidiculous Game Hour count10/02/03