| 31981 | UnkaTris | ZX81 1K | English |
| 42987 | Unlimited Bobs | ZX-Spectrum 48K | English |
| 12726 | Unlimited Speccy Minidemo | ZX-Spectrum 128K | English |
| 7827 | Unlimited Spirits | ZX-Spectrum 48K/128K | English |
| 27475 | Unlimited Sprites 1k Intro | ZX-Spectrum 48K | English |
| 26036 | Unload the Cargo | ZX-Spectrum 48K | English |
| 31279 | Unofficial First Entry Simulator | - | English |
| 21381 | Unrecognized Formatting Object | ZX-Spectrum 48K | English |
| 15811 | Unresident Evil | ZX-Spectrum 48K | English |
| 15812 | Unresident Evil 2: Escape from the Courtyard | ZX-Spectrum 48K | English |
| 15813 | Unresident Evil 3: Enter the Laboratory | ZX-Spectrum 48K | English |
| 15814 | Unresident Evil 4: The Final Showdown | ZX-Spectrum 48K | English |
| 36611 | Untangle | ATM | English |
| 24547 | Untitled Adventure | ZX-Spectrum 48K | English |
| 24548 | Untitled Compilation | ZX-Spectrum 48K | English |
| 7828 | Unused Demo | ZX-Spectrum 128K | English |
| 30928 | Unusual Lumberjack Adventure | - | English |
| 36702 | Up | ZX-Spectrum Next | English |
| 23536 | Up & Add 'em | ZX-Spectrum 48K | English |
| 10358 | Up 'n Down | ZX-Spectrum 48K | English |