| Nintendo GBA cart. |  Mermaid Melody - Pichi Pichi Pitch - Pichi Pichitto Live Start! Model AGB-BMJ-JPN(RK353-J1) | 2004 | Konami Corp. Japan |
| Video Slot Machine | Merry Joiner | 2004 | Belatra |
| Sony PSP UMD | Metal Gear Ac!d Model ULJM-05001 | 2004 | Konami Corp. Japan |
| Nintendo GameCube disc | Metal Gear Solid - The Twin Snakes | 2004 | Konami Corp. Japan |
| Nintendo GameCube disc | Metal Gear Solid - The Twin Snakes Model DOL-GGSE-USA | 2004 | Konami Digital Ent. Co., Ltd. |
| Nintendo GameCube disc |  Metal Gear Solid - The Twin Snakes Model DOL-GGSP-EUR | 2004 | Konami Digital Ent. Co., Ltd. |
| Pachislot | Metal Slug | 2004 | SNK Playmore Japan |
| Microsoft XBOX disc | Metal Slug 3 Model DP5-00001 P | 2004 | SNK Playmore Japan |
| Sony PlayStation 2 disc | Metal Slug 4 Model SLPS-25376 P | 2004 | SNK Playmore Japan |
| SNK Neo-Geo AES cart. | Metal Slug 5 Model NGH-268 P | 2004 | SNK Playmore Japan |
| Nintendo GBA cart. | Metal Slug Advance Model AGB-BSME-USA | 2004 | SNK Playmore Japan |
| Nintendo GBA cart. | Metal Slug Advance Model AGB-BSMJ-JPN | 2004 | SNK Playmore Japan |
| Nintendo GBA cart. | Metal Slug Advance Model AGB-BSMP | 2004 | Ignition Ent., Ltd. |
| PC/MS-Windows CD | Metal Storm | 2004 | Game Factory, The |
| Microsoft XBOX disc | Metal Wolf Chaos | 2004 | Unknown |
| NEC TurboGrafx-CD | Meteor Blaster DX Model BTCD0402 Hb | 2004 | MindRec |
| IBM PC/AT DOS pack. | Meteor Rescue! Sw | 2004 | PLBM Games |
| Nintendo GBA cart. | Metroid - Zero Mission Model AGB-BMXE-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GBA cart. | Metroid - Zero Mission Model AGB-BMXJ-JPN | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GBA cart. | Metroid - Zero Mission Model AGB-BMXP-EUR | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo GameCube disc | Metroid Prime 2 - Echoes Model DOL-G2ME-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GameCube disc | Metroid Prime 2 - Echoes Model DOL-G2MP-EUR | 2004 | Nintendo Co., Ltd. Japan |
| Nintendo DS cart. | Metroid Prime Hunters - First Hunt Model NTR-AFME-USA | 2004 | Nintendo of America, Inc. USA 45496 |
| Nintendo GBA cart. | Metroid NES Classic + 9 Model AGB-FMRP | 2004 | Nintendo Co., Ltd. Japan |
| Slot Machine | Mexico | 2004 | Mega |
| Slot Machine | Miami | 2004 | Mega |
| Microsoft XBOX disc | Miami Vice | 2004 | Unknown |
| Slot Machine | MIB - Men in Black - Galactic Payback | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | MIB - Men in Black - Riches of the Universe | 2004 | WMS Gaming, Inc. Chicago, IL, USA |
| PC/MS-Windows CD |  Miboujin - Niku Dorei Model WILL-115 18 | 2004 | Guilty Japan |
| Nintendo GBA cart. | Mickey no Pocket Resort Model AGB-BM4J-JPN | 2004 | Tomy |
| Pocket PC soft. | Microsoft Entertainment PocketPak | 2004 | Microsoft |
| PC/MS-Windows CD | Midway Arcade Treasures | 2004 | Midway Home Ent. |
| Microsoft XBOX disc | Midway Arcade Treasures 2 | 2004 | Midway Home Ent. |
| Nintendo GameCube disc | Midway Arcade Treasures 2 Model DOL-GAYE-USA | 2004 | Midway Home Ent. |
| Sony PlayStation 2 disc | Midway Arcade Treasures 2 Model SLES-52844 | 2004 | Midway Home Ent. |
| Sony PlayStation 2 disc | Midway Arcade Treasures 2 Model SLUS-20997 | 2004 | Midway Home Ent. |
| Sony PlayStation 2 disc | Midway Arcade Treasures Model SLES-51927 | 2004 | Midway Home Ent. |
| Nintendo GBA cart. | Mighty Beanz Pocket Puzzles Model AGB-BMBE-USA | 2004 | Majesco Sales, Inc. |
| Sega CD | Mighty Mighty Missile | 2004 | SEGA Corp. |
