Dreamcast
| Under Defeat | Wallpaper | 04/10/06 |
Saturn
| 2nd Arukotoha Sando-R | Free play | 04/28/06 |
| Death Crimson | Debug mode | 06/30/06 |
| Death Crimson | Stage skip | 06/30/06 |
| GunGriffon II | Bonus VS.battle map | 06/13/06 |
| Gussun Oyoyo S | Hentai Mode | 04/28/06 |
| Gussun Oyoyo S | Level Select & Debug mode | 04/28/06 |
| Kanzen Chuuki Pro Yakyuu: Greatest Nine | Big head mode | 06/12/06 |
