Game Boy Color
| Metal Gear Solid | Radio Program IdeaSpy 2.5 | 01/29/04 |
MSX
| Metal Gear | Hidden Passwords | 02/03/02 |
NES
| Contra | Codes | 08/30/00 |
| Contra | Secret Ending (Japanese Version) | 07/02/02 |
| Teenage Mutant Ninja Turtles: Tournament Fighters | Play as Hothead agaisnt Hothead | 06/12/03 |
