| PC/MS-Windows DVD |  Majo no Shokuzai Model ALS-0054 | 2004 | Alicesoft Japan |
| Nintendo GBA cart. | Majokko Cream-chan no Gokko Series 2 - Kisekae Angel Model AGB-BE2J-JPN | 2004 | Culture Brain |
| Redemption game (mechanical) | Major League | 2004 | 5 Star Redemption, Inc. Los Angeles, CA, USA |
| Slot Machine | Make It Pay | 2004 | IGT International Game Technologies Reno, NV, USA |
| Redemption game (mechanical) | Make It! Take It! | 2004 | American Alpha, Inc. Monmouth Junction, NJ, USA |
| Microsoft XBOX disc | Malice | 2004 | Unknown |
| Microsoft XBOX disc | Manchester United Manager 2005 | 2004 | Unknown |
| PC/MS-Windows CD | Manhunt | 2004 | Rockstar Games |
| Microsoft XBOX disc | Manhunt | 2004 | Unknown |
| Sinclair ZX Spectrum cass. | Manic Miner: Jet Set Willy Hb | 2004 | Broadsoft |
| Slot Machine | Maquina Latina | 2004 | IGT International Game Technologies Reno, NV, USA |
| Nokia N-Gage card | Marcel Desailly Pro Soccer Model 0630797 | 2004 | Gameloft S.A. France |
| Slot Machine | Marco Polo | 2004 | AGI Austrian Gaming Industries Novomatic Group |
| Slot Machine | Marco Polo | 2004 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Marilyn Monroe Starring in the Million Dollar Jewels | 2004 | IGT International Game Technologies Reno, NV, USA |
| Pachislot | Marine Panic | 2004 | Abilit Japan |
| Nintendo GBA cart. | Mario Golf - Advance Tour Model AGB-BMGE-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GBA cart. | Mario Golf - Advance Tour Model AGB-BMGP | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. |  Mario Golf - Advance Tour Model AGB-BMGU-AUS | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Mario Golf - GBA Tour Model AGB-BMGJ-JPN | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GameCube disc | Mario Golf - Toadstool Tour Model DOL-GFTP-EUR | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GameCube disc | Mario Party 6 Model DOL-GP6E-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GameCube disc | Mario Party 6 Model DOL-GP6J-JPN | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Mario Pinball Land Model AGB-BMVE-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GameCube disc | Mario Power Tennis Model DOL-GOME-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GameCube disc | Mario Tennis GC | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Mario vs. Donkey Kong Model AGB-BM5E-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GBA cart. | Mario vs. Donkey Kong Model AGB-BM5J-JPN | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Mario vs. Donkey Kong Model AGB-BM5P | 2004 | Nintendo Co., Ltd. Japan |
| Slot Machine | Mars Land | 2004 | Subsino Co., Ltd. |
| Arcade Video game | Mars Lander Battle Stage 2 | 2004 | F2 System Seoul, Korea |
| Redemption game (mechanical) | Mars Mission | 2004 | Skee-Ball, Inc. Chalfont, PA, USA |
| VTECH V.Smile cart. | Marvel Spider-Man & Friends - Secret Missions Model 80-092143 | 2004 | VTECH Video Technology, Ltd. |
| PC/MS-Windows CD | Mashed - Drive to Survive | 2004 | Empire Interactive Europe, Ltd. |
| Microsoft XBOX disc | Mashed - Drive to Survive | 2004 | Unknown |
| Medal game (video) | Master Casino | 2004 | Jun Hi Tech Korea |
| Medal game (video) | Master Casino II Plus | 2004 | Jun Hi Tech Korea |
| PC/MS-Windows pack. | Matey | 2004 | Blaney, Loren |
| Pachislot | Matsuri Douraku | 2004 | Okazaki Sangyo Co., Ltd. Japan |
| Pachinko | Matsuri Monogatari | 2004 | Heiwa Japan |
