| Game | Cheats | Updated |
|---|---|---|
| Machine Head | 4 | Dec 16th 2004 |
| Machine Hunter | 11 | Dec 16th 2004 |
| Macross: Digital Mission VF-X 2 | 1 | Aug 25th 2005 |
| Madden '97 | 2 | Dec 16th 2004 |
| Madden '99 | 2 | Dec 16th 2004 |
| Madden 2000 | 4 | Dec 16th 2004 |
| Madden 2001 | 3 | Dec 16th 2004 |
| Madden 2002 | 7 | Dec 16th 2004 |
| Magic Carpet | 3 | Dec 16th 2004 |
| Magic the Gathering: Battle Mage | 1 | Dec 16th 2004 |
| Makeruna! Makendo 2 | 1 | Aug 25th 2005 |
| March Madness 2000 | 2 | Dec 16th 2004 |
| March Madness ´98 | 1 | Aug 25th 2005 |
| Marvel Super Heroes | 7 | Dec 16th 2004 |
| Marvel Super Heroes vs. Street Fighter | 20 | Dec 16th 2004 |
| Marvel vs Capcom: Clash of the Super Heroes EX | 1 | Dec 16th 2004 |
| Mat Hoffman's Pro BMX | 18 | Dec 16th 2004 |
| Maximum Force | 1 | Aug 25th 2005 |
| MDK | 25 | Dec 16th 2004 |
| Mechwarrior 2 | 15 | Dec 16th 2004 |
| Medal Of Honor | 5 | Dec 16th 2004 |
| Medal Of Honor: Underground | 10 | Dec 16th 2004 |
| Medievil | 9 | Dec 16th 2004 |
| MediEvil 2 | 13 | Dec 16th 2004 |
| Mega Man X4 | 4 | Dec 16th 2004 |
| Megaman 8 | 2 | Aug 21st 2004 |
| Megaman Battle Network 2 | 8 | Dec 16th 2004 |
| Megaman Legends 2 | 9 | Dec 16th 2004 |
| Megaman X4 | 15 | Aug 21st 2004 |
| Megaman X5 | 4 | Dec 16th 2004 |
| Megaman X6 | 9 | Aug 21st 2004 |
| Men in Black | 1 | Dec 16th 2004 |
| Men In Black: Crashdown | 7 | Dec 16th 2004 |
| Metal Gear Solid | 67 | Dec 16th 2004 |
| Metal Gear Solid Integral | 3 | Dec 16th 2004 |
| Metal Gear Solid: VR Missions | 5 | Dec 16th 2004 |
| Metal Slug | 1 | Aug 25th 2005 |
| Metal Slug X | 2 | Dec 16th 2004 |
| Metropolitan Highway Battle R | 1 | Aug 25th 2005 |
| Micro Maniacs | 8 | Dec 16th 2004 |
| Mike Tyson Boxing | 10 | Dec 16th 2004 |
| Mission Impossible | 3 | Jul 1st 2006 |
| MLB 2001 | 3 | Dec 16th 2004 |
| MLB 2002 | 3 | Dec 16th 2004 |
| MLB 2003 | 7 | Dec 16th 2004 |
| MLB ´99 | 1 | Aug 25th 2005 |
| Mobile Suit Gundam (jp) | 1 | Aug 25th 2005 |
| Mobile Suit Z Gundam | 3 | Dec 16th 2004 |
| Monkey Hero | 2 | Dec 16th 2004 |
| Monopoly | 1 | Aug 25th 2005 |
| Monster Rancher | 15 | Dec 16th 2004 |
| Monster Rancher 2 | 19 | Dec 16th 2004 |
| Monster Rancher Battle Cards: Episode II | 1 | Aug 21st 2004 |
| Monster Seed | 4 | Dec 16th 2004 |
| Monsters, Inc.: Scream Team | 3 | Dec 16th 2004 |
| Mortal Kombat 3 | 2 | Dec 16th 2004 |
| Mortal Kombat 4 | 14 | Dec 16th 2004 |
| Mortal Kombat Mythologies | 8 | Dec 16th 2004 |
| Mortal Kombat Trilogy | 8 | Aug 21st 2004 |
| Mortal Kombat: Special Forces | 3 | Dec 16th 2004 |
| Moto Racer | 1 | Aug 25th 2005 |
| Moto Racer 2 | 8 | Dec 16th 2004 |
| Moto Racer: World Tour | 2 | Dec 16th 2004 |
| Motor Toon Grand Prix | 6 | Aug 25th 2005 |
| Motor Toon Grand Prix 2 | 1 | Aug 25th 2005 |
| Ms. Pac-Man Maze Madness | 4 | Dec 16th 2004 |
| MTV Music Generator | 1 | Dec 16th 2004 |
| MTV Sports: Pure Ride | 7 | Dec 16th 2004 |
| MTV Sports: Skateboarding | 1 | Dec 16th 2004 |
| MTV Sports: Snowboarding | 3 | Dec 16th 2004 |
| MTV Sports: T.J. Lavin's Ultimate BMX | 16 | Dec 16th 2004 |
| Mulan | 1 | Dec 16th 2004 |
| Mummy | 5 | Dec 16th 2004 |
| Muppet Monster Adventure | 15 | Dec 16th 2004 |
| Muppet RaceMania | 7 | Dec 16th 2004 |
| Myst | 2 | Dec 16th 2004 |