Game Boy
| Kenyuu Densetsu Yaiba | HP Recovery | 08/07/04 |
| Yuu Yuu Hakusho Dai 4 Tama: Makai Touitsu | Play as Raizen | 06/16/04 |
PlayStation
| RockMan 5 | Passwords | 06/04/03 |
PlayStation 2
| Konjiki no Gashbell | Misc. Unlockables | 11/19/04 |
| Konjiki no Gashbell | Random select | 06/16/04 |
| Konjiki no Gashbell | Unlocking More BGMs | 06/16/04 |
| Zatch Bell! Mamodo | Misc. Unlockables | 04/11/05 |
| Zatch Bell! Mamodo | Unlock Maestro as a playable character (JP Version) | 04/26/05 |
| Zatch Bell! Mamodo | Unlock Zeon/Deufo as a playable character | 04/11/05 |
SNES
| Mega Man Soccer | Beating every single stages | 06/18/04 |
| Mega Man X2 | Passwords | 12/16/02 |
| Mega Man X3 | Passwords | 12/16/02 |
| Yuu Yuu Hakusho | Story Mode Password | 05/07/05 |
