| 16835 | U-33 | ZX-Spectrum 48K | Spanish |
| 31980 | U-Bend | ZX81 16K | English |
| 37113 | U-Boat | ZX-Spectrum 48K | French |
| 41570 | U-Boat | ZX81 16K | English |
| 27549 | U-Jäger | ZX-Spectrum 48K | German |
| 35725 | U.F.O | ZX81 16K | English |
| 42949 | U.F.O. Invasion | ZX81 1K | English |
| 24610 | U.S. Navy | ZX-Spectrum 48K | Spanish |
| 35324 | UFO | ZX-Spectrum 48K | English |
| 35731 | UFO | ZX81 1K | English |
| 44042 | UFO | ZX-Spectrum 16K/48K | German |
| 44502 | UFO Attack | ZX-Spectrum 48K | English |
| 5504 | UFO-Adventure | ZX-Spectrum 48K | German |
| 5505 | UGH! | ZX-Spectrum 48K | English |
| 39135 | UXB | ZX-Spectrum 48K | English |
| 42413 | Udgil and the cursed scrol | ZX-Spectrum 16K | English |
| 26437 | Ugo il Ladro | ZX-Spectrum 48K | Italian |
| 26485 | Ultima Chance | ZX-Spectrum 48K | Italian |
| 31094 | Ultimate Anger Simulator | ZX-Spectrum 48K | English |
| 31135 | Ultimate Car Park Simulator | ZX-Spectrum 48K | English |