| Nintendo GBA cart. |  Looney Tunes - Back in Action Model AGB-BLTP | 2003 | EA Games Electronic Arts, Inc. |
| Nintendo GameCube disc | Looney Tunes - Back in Action Model DOL-GLNE-USA | 2003 | Electronic Arts CA, USA 14633 |
| PC/MS-Windows CD | Lords of EverQuest | 2003 | Sony Online Ent., Inc. |
| Nintendo GameCube disc | Lost Kingdoms II Model DOL-GR2E-USA | 2003 | Activision Publishing, Inc. Los Angeles, CA, USA 47875 |
| Nintendo GameCube disc |  Lost Kingdoms II Model DOL-GR2P-EUR | 2003 | Activision Publishing, Inc. Los Angeles, CA, USA 47875 |
| Slot Machine | Lost Legend | 2003 | Cretus |
| Microsoft XBOX disc | Lotus Challenge | 2003 | Unknown |
| Slot Machine | Lucky 8 Line | 2003 | Andamiro Co., Ltd. |
| Pachislot | Lucky Bomb | 2003 | Eipex Tokyo, Japan |
| Pachislot | Lucky Cherry | 2003 | Okazaki Sangyo Co., Ltd. Japan |
| Fruit Machine | Lucky Chip | 2003 | JPM International |
| Slot Machine | Lucky Four Leaf Clover | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Lucky Girl | 2003 | Subsino Co., Ltd. |
| Video Slot Machine | Lucky Haunter | 2003 | Igrosoft |
| Slot Machine | Lucky Hearts 5-Reel | 2003 | Barcrest USA IGT Group USA |
| Video Slot Machine | Lucky Lady's Charm | 2003 | AGI Austrian Gaming Industries Novomatic Group |
| Video Slot Machine | Lucky Larry's Lobstermania Video Reel Touch | 2003 | IGT International Game Technologies Reno, NV, USA |
| Pachislot | Lucky Parade | 2003 | Taiyo Co., Ltd. Japan |
| Slot Machine | Lucky V Line | 2003 | Shyh Yuan Electronic Int'L Co., Ltd. Taiwan |
| Nintendo GBA cart. | Lufia - The Ruins of Lore Model AGB-AGDE-USA | 2003 | Atlus USA, Inc. CA, USA |
| Nintendo Pokémon Mini game | Lunch Time | 2003 | Nintendo Co., Ltd. Japan |
| PC/MS-Windows CD | Lunentia | 2003 | Makkoya Ent. Korea |
| Sony PlayStation CD | M&M's - Shell Shocked Model SLES-03999 | 2003 | JoWooD Productions AG |
| Sony PlayStation CD | M&M's - Shell Shocked Model SLES-04001 | 2003 | JoWooD Productions AG |
| Sony PlayStation CD | M&M's - Shell Shocked Model SLES-04002 | 2003 | JoWooD Productions AG |
| Slot Machine | M*A*S*H | 2003 | IGT International Game Technologies Reno, NV, USA |
| Sinclair ZX Spectrum cass. | Ma Jolie Hb | 2003 | Broadsoft |
| Sinclair ZX Spectrum cass. | Ma Jolite Hb | 2003 | Broadsoft |
| Sega Dreamcast GD | Ma-Gi - Marginal Model T-46514M | 2003 | Princess Soft |
| Microsoft XBOX disc | Mace Griffin - Bounty Hunter | 2003 | Unknown |
| Pachislot | Mach GoGoGo | 2003 | Aristocrat Technologies Co., Ltd. Tokyo, Japan |
| Pachislot | Mach GoGoGo Mitchelle ver. | 2003 | Aristocrat Technologies Co., Ltd. Tokyo, Japan |
| PC/MS-Windows CD | Madden NFL 2004 | 2003 | Electronic Arts CA, USA 14633 |
| Microsoft XBOX disc | Madden NFL 2004 | 2003 | Unknown |
| Nintendo GBA cart. | Madden NFL 2004 Model AGB-AMDE-USA | 2003 | EA Sports |
| Nintendo GameCube disc | Madden NFL 2004 Model DOL-GQXE-USA | 2003 | Electronic Arts CA, USA 14633 |
| Sony PlayStation CD | Madden NFL 2004 Model SLUS-01570 | 2003 | Electronic Arts CA, USA 14633 |
| Nintendo GBA cart. | Made in Wario Model AGB-AZWJ-JPN | 2003 | Nintendo Co., Ltd. Japan |
| Microsoft XBOX disc | Magatama | 2003 | Unknown |
| Microsoft XBOX disc | Magic - The Gathering - Battlegrounds | 2003 | Unknown |
