| Nintendo GBA cart. |  Twin Series 7: Twin Puzzle - Kisekae Wanko EX + Nyaa to Chuu no Rainbow Magic 2 Model AGB-B2PJ-JPN | 2004 | Culture Brain |
| Slot Machine | Twin Win | 2004 | IGT International Game Technologies Reno, NV, USA |
| Microsoft XBOX disc | Ty the Tasmanian Tiger 2 - Bush Rescue | 2004 | Unknown |
| Nintendo GBA cart. | Ty the Tasmanian Tiger 2 - Bush Rescue Model AGB-BTYE-USA | 2004 | EA Games Electronic Arts, Inc. |
| Nintendo GBA cart. | Ty the Tasmanian Tiger 2 - Bush Rescue Model AGB-BTYP | 2004 | EA Games Electronic Arts, Inc. |
| Nintendo GameCube disc | TY the Tasmanian Tiger 2 - Bush Rescue Model DOL-GYTE-USA | 2004 | Electronic Arts CA, USA 14633 |
| Nintendo GBA cart. | Uchuu no Stellvia Model AGB-BUVJ-JPN | 2004 | King Records Co., Ltd. Japan |
| PC/MS-Windows CD | UEFA Euro 2004 - Portugal | 2004 | Electronic Arts CA, USA 14633 |
| Sony PlayStation 2 disc |  UEFA Euro 2004 - Portugal Model SLES-52394 | 2004 | Electronic Arts CA, USA 14633 |
| Microsoft XBOX disc | UEFA Euro 2004 Portugal | 2004 | Unknown |
| Sony PlayStation 2 disc | UFC Sudden Impact Model SLES-52204 | 2004 | Global Star Soft. |
| Medal game (video) | UFO Alpha | 2004 | ITec Korea |
| Medal game (video) | UFO Beta | 2004 | ITec Korea |
| Redemption game (mechanical) | UFO Catcher 7 Max Edition | 2004 | SEGA Corp. |
| PC/MS-Windows CD | Ultima Online - Samurai Empire | 2004 | Electronic Arts CA, USA 14633 |
| PC/MS-Windows CD | Ultima X - Odyssey | 2004 | Electronic Arts CA, USA 14633 |
| Sony PlayStation CD | Ultimate Brain Games Model SLES-04024 | 2004 | Unknown |
| Nintendo GBA cart. | Ultimate Card Games Model AGB-BUCE-USA | 2004 | Telegames, Inc. TX, USA |
| Nintendo GBA cart. | Ultimate Winter Games Model AGB-BUWE-USA | 2004 | Telegames, Inc. TX, USA |
| Slot Machine | Ultra Bonus Reelette | 2004 | IGT International Game Technologies Reno, NV, USA |
| Microsoft XBOX disc | Ultra Bust-a-Move | 2004 | Unknown |
| Nintendo GBA cart. | Ultra Keibitai - Monster Attack Model AGB-BUTJ-JPN | 2004 | Rocket Co. Japan |
| PC/MS-Windows CD | Ultra Mahou Shoujo Manana Vol.1 | 2004 | Alicesoft Japan |
| PC/MS-Windows CD | Ultra Mahou Shoujo Manana Vol.2 | 2004 | Alicesoft Japan |
| PC/MS-Windows CD | Ultra Mahou Shoujo Manana Vol.3 | 2004 | Alicesoft Japan |
| Pachislot | Ume-Matsu - Dynamite Wave | 2004 | Rodeo Corp. Japan |
| Pachinko | Umi e Ikou 2 Model FJ | 2004 | Maruhon Japan |
| Pachinko | Umi e Ikou 2 Model FX | 2004 | Maruhon Japan |
| Pachinko | Umi e Ikou 2 Model G | 2004 | Maruhon Japan |
| Pachinko | Umi e Ikou 2 Model MX | 2004 | Maruhon Japan |
| Pachislot | Uminchuryu | 2004 | Eipex Tokyo, Japan |
| PC/MS-Windows CD | Uncharted Waters Online | 2004 | KOEI Co., Ltd. Japan |
| Slot Machine | Undercover Cash | 2004 | GTech Corp. Providence, RI, USA |
| Medal game (video) | Unicorn | 2004 | Unknown Korea |
| Medal game (video) | Uniworld | 2004 | Unknown Korea |
| Microsoft XBOX disc | Unreal II - The Awakening | 2004 | Unknown |
| PC/MS-Windows CD | Unreal Tournament 2004 | 2004 | Atari Interactive, Inc. |
| Apple Macintosh CD | Unreal Tournament 2004 | 2004 | MacSoft |
| Slot Machine | Upper Crust | 2004 | IGT International Game Technologies Reno, NV, USA |
| PC/MS-Windows CD | Urban Freestyle Soccer | 2004 | Acclaim Ent., Inc. Glen Cove, NY, USA |
