Region | Title | System | Version | Edition | Languages | Serial | Status |
| UAV Predator | PC | | Original | | | |
| UFO: Afterlight | PC | 1.4 | Original | | | |
| Ultimate Blu | PC | 1.0.0.3 | Original | | | |
| Ultimate CD Strategies: Vol 1 Issue 12 | PC | | | | UPCS120299 | |
| Ultimate CD: Issue Three November 1997 (Disc 1) | PC | | | | UPC031197 | |
| Ultimate CD: Issue Three November 1997 (Disc 2) | PC | | | | UPC031197 | |
| Ultimate CD: Vol 2 Issue 4: December 1998 | PC | | | | UPC161298A | |
| Ultimate Domain | PC | 1.0.0 | Ergo Software | | RIT026, TDG026 | |
| The Ultimate Games CD | PC | | | | | |
| The Ultimate Halo Companion DVD Set | XBOX | | Original | | IM-018 | |
| Ultimate Mahjongg 5 | PC | | GSP | | 1536A | |
| Ultimate Mahjongg 5 | PC | | GSP | | 1237A | |
| Underground Ernie: International Fun Station | PC | | GSP | | 1636A | |
| Unlimited Adventures | PC | 1.2 | Slash Corporation | | | |
| Unreal | PC | Jul 18 1998 | Bundle Version OEM | | P/N: 1713320402 | |
| Unreal Anthology | PC | | Original | | DVD-UTA-EU | |
| Unreal Tournament (Disc 1) (Game) | PC | 400 | Original | | | |
| Unreal Tournament 2003 (Disc 2) | PC | 2107 | Original | | 1007457, Part# 23956CD2 | |
| Unreal Tournament 2003 (Disc 3) | PC | 2107 | Original | | 1007459, Part# 23956CD3 | |
| Unreal Tournament 2004 (Play Disc) | PC | 3186 | Original | | | |
| Unreal Tournament 2004 (Play Disc) | PC | 3186 | Original | | Part # 25012CD6 | |
| Unreal Tournament 2004 (Disc 1) (Install Disc) | PC | 3186 | Original | | 1012407, Part # 25012CD1 | |
| Unreal Tournament 2004 (Disc 4) | PC | 3186 | Original | | 1013410, Part # 25012CD4 | |
| Unreal Tournament 2004 (Disc 5) | PC | 3186 | Original, Rerelease | | 1013411, Part # 25012CD5 | |
| Unreal Tournament 2004 (Disc 2) 언리얼 토너먼트 2004 | PC | 3186 | Original | | 1013408, Part # 25012CD2 | |
| Unreal Tournament 2004 (Disc 3) 언리얼 토너먼트 2004 | PC | 3186 | Original | | 1013409, Part # 25012CD3 | |
| Unreal Tournament III | PC | 3487 | Original, Collector's Edition | | DVD-UT3-EU | |
| Uplink: Trust Is a Weakness | PC | 1.0 | Rerelease | | | |
| Upwords | PC | | Original | | 49184.DL | |
| Uru: Ages Beyond Myst | PC | | Original, OEM Bundle, Collector's Edition | | G71-URGA001 | |