| Slot Machine |  Maui Wowie | 2004 | Magic Dreams |
| Nintendo GBA cart. | Mawaru - Made in Wario Model AGB-RZWJ-JPN | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Max Payne Advance Model AGB-BMEP-UKV | 2004 | Rockstar Games |
| Sony PlayStation 2 disc | MaXXed Out Racing Model SLES-51622 | 2004 | Midas Int. Ent. |
| Nintendo GameCube disc | MC Groovz Dance Craze | 2004 | Mad Catz Interactive, Inc. |
| TRS-80 MC-10 cass. | MC-10 Freeway | 2004 | Perosi, Charles |
| TRS-80 MC-10 cass. | MC-Text | 2004 | Gerrie, Jim |
| Microsoft XBOX disc | MechAssault 2 - Lone Wolf | 2004 | Unknown |
| Microsoft XBOX disc | MechAssault 2 - Lone Wolf (Limited Edition) | 2004 | Unknown |
| Medal game (video) | Medal Master | 2004 | Fusence |
| PC/MS-Windows CD | Medal of Honor - Pacific Assault | 2004 | Electronic Arts CA, USA 14633 |
| Dedicated Console | Mega Drive Collection Volume 1 | 2004 | Radica Games |
| Dedicated Console | Mega Drive Collection Volume 2 | 2004 | Radica Games |
| IVL Easy Karaoke cart. | Mega Hits Vol.1 | 2004 | IVL Technologies |
| IVL Easy Karaoke cart. | Mega Hits Vol.2 | 2004 | IVL Technologies |
| IVL Easy Karaoke cart. | Mega Hits Vol.3 | 2004 | IVL Technologies |
| Slot Machine | Mega Jungle | 2004 | Webak Elektronik |
| Nintendo GameCube disc | Mega Man - Anniversary Collection Model DOL-G6QE-USA | 2004 | Capcom Ent., Inc. USA 13388 |
| Nintendo GBA cart. | Mega Man Battle Chip Challenge Model AGB-A89E-USA | 2004 | Capcom USA, Inc. Santa Clara, CA, USA 13388 |
| Nintendo GBA cart. | Mega Man Battle Chip Challenge Model AGB-A89P | 2004 | Capcom Co., Ltd. Japan |
| Nintendo GBA cart. | Mega Man Battle Network 4 Blue Moon Model AGB-B4BE-USA | 2004 | Capcom USA, Inc. Santa Clara, CA, USA 13388 |
| Nintendo GBA cart. | Mega Man Battle Network 4 Blue Moon Model AGB-B4BP | 2004 | Capcom Co., Ltd. Japan |
| Nintendo GBA cart. | Mega Man Battle Network 4 Red Sun Model AGB-B4WE-USA | 2004 | Capcom USA, Inc. Santa Clara, CA, USA 13388 |
| Nintendo GBA cart. |  Mega Man Battle Network 4 Red Sun Model AGB-B4WP-EUR | 2004 | CE Europe, Ltd. Capcom Europe London, England 055060 |
| Nintendo GameCube disc | Mega Man X - Command Mission Model DOL-GXRE-USA | 2004 | Capcom Ent., Inc. USA 13388 |
| Nintendo GameCube disc | Mega Man X - Command Mission Model DOL-GXRP-EUR | 2004 | CE Europe, Ltd. Capcom Europe London, England 055060 |
| Nintendo GBA cart. | Mega Man Zero 3 Model AGB-BZ3E-USA | 2004 | Capcom USA, Inc. Santa Clara, CA, USA 13388 |
| Nintendo GBA cart. | Mega Man Zero 3 Model AGB-BZ3P-EUR | 2004 | CE Europe, Ltd. Capcom Europe London, England 055060 |
| Slot Machine | Mega Poker | 2004 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Mega Road | 2004 | Mega |
| Commodore C64 cart. | Megafun | 2004 | Ent. Soft. |
| Arcade Video game | Megatouch Force 2004 | 2004 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch Force 2004.5 | 2004 | Merit Industries, Inc. Bensalem, PA, USA |
| Arcade Video game | Megatouch Maxx Sapphire | 2004 | Merit Industries, Inc. |
| Arcade Video game | Megatouch Maxx Sapphire 2 | 2004 | Merit Industries, Inc. |
| TRS-80 MC-10 cass. | Memory Display | 2004 | Tamer, James |
| PC/MS-Windows CD | Men of Valor | 2004 | Sierra Ent., Inc. USA |
| Microsoft XBOX disc | Men of Valor | 2004 | Unknown |
| Arcade Video game | Meng Hong Lou | 2004 | Sealy Electronic Technology Co., Ltd. China |
| Slot Machine | Merkur Eurocup | 2004 | ADP Merkur GmbH Gauselmann Group Germany |
