Dreamcast

Tokusatsu Bouken Katsugeki Super Hero RetsudenUnlock Hidden Characters05/28/09

Game Boy

Battle CityLevel Select06/09/02

NeoGeo Pocket Color

SNK vs Capcom: Card Fighters 2 Expand EditionHidden Characters in Free Battle Mode02/05/07

Nintendo 64

Mission: ImpossibleCodes10/10/00
NBA Live 2000Unlock Michael Jordan06/09/02

PlayStation

Kamen Rider V3Hidden Characters08/19/06

Super Nintendo

Battle PinballConfiguration Menu08/10/06
Cannon FodderCodes06/12/02
Cannon FodderLevel Passwords06/12/02
RoboCop 3Codes06/12/02
Super SoccerCodes06/12/02
UltramanHidden Options Screen06/12/02