| 3484 | Octagon Squad | ZX-Spectrum 48K | English |
| 3485 | Octan | ZX-Spectrum 48K | English |
| 3486 | Octipede | ZX-Spectrum 48K | English |
| 28132 | Odbicie Swiatla | ZX-Spectrum 48K | Polish |
| 28131 | Odczytywanie Skali Miernika | ZX-Spectrum 48K | Polish |
| 3488 | Odd Ball | ZX-Spectrum 48K | English |
| 39688 | Odd One Out | ZX-Spectrum 48K | English |
| 14006 | Odd One Out | ZX-Spectrum 48K | English |
| 6755 | Odisea | ZX-Spectrum 48K | Spanish |
| 27452 | Odisea 1001 | ZX-Spectrum 48K | Spanish |
| 16179 | Odissey | ZX-Spectrum 48K | Spanish |
| 7624 | Oei | ZX-Spectrum 48K | English |
| 30586 | Off My Ed | ZX-Spectrum 48K | English |
| 11315 | Off the Hook | ZX-Spectrum 48K | English |
| 18351 | Off-Shore Racing | ZX-Spectrum 48K | - |
| 36123 | Offenbach Meteo | ZX-Spectrum 48K | English |
| 11966 | Office Master | ZX-Spectrum 48K | English |
| 22642 | Office-Clip | ZX-Spectrum 48K | English |
| 22147 | Officeclip | ZX-Spectrum 48K | English |
| 44240 | Officer Crabtree's HONGMON | ZX-Spectrum 48K | English |