| 11315 | Off the Hook | ZX-Spectrum 48K | English |
| 36123 | Offenbach Meteo | ZX-Spectrum 48K | English |
| 11966 | Office Master | ZX-Spectrum 48K | English |
| 45572 | Office Slacker | 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 |
| 30587 | Official Hearing Test | ZX-Spectrum 16K | English |
| 20395 | Oglibloggs + Laser Defence | ZX-Spectrum 16K | English |
| 32214 | Oh La La! | ZX-Spectrum 48K | English |
| 3494 | Oh Mummy | ZX-Spectrum 16K | English |
| 31070 | Oh My God! | ZX-Spectrum 16K | English |
| 34952 | Oh No! More Lemmings | SAM Coupé | English |
| 44543 | Oh No! More Monkeys | ZX-Spectrum 48K | English |
| 15477 | Oh Sh1t Another Big Disk | ZX-Spectrum 128 +3 | English |
| 14593 | Oh Shit! | ZX-Spectrum 48K | English |
| 10012 | Oh Shit! | ZX-Spectrum 48K | English |
| 10011 | Oh! P-Toon | ZX-Spectrum 48K | English |
| 2001048 | Oh! Pascal! | - | English |
| 40712 | Ohm's Law | ZX81 16K | English |