| 15081 | O'Level French | ZX-Spectrum 48K | English |
| 11880 | O'Level Maths | ZX-Spectrum 48K | English |
| 15078 | O'Level Physics | ZX-Spectrum 48K | English |
| 15083 | O'Level Technical Drawing | ZX-Spectrum 48K | English |
| 26235 | O-Level Chemistry | ZX-Spectrum 48K | English |
| 25597 | O-Level French | ZX-Spectrum 48K | English |
| 24515 | O-Level GCE/CSE Maths Test | ZX-Spectrum 48K | English |
| 19404 | O-Level Revision Aid | ZX-Spectrum 48K | English |
| 20281 | O-Level Technical Drawing | ZX-Spectrum 48K | English |
| 14477 | O.S. Quiz | ZX-Spectrum 48K | English |
| 19295 | O/A-Level Physics Definitions | ZX-Spectrum 48K | English |
| 19549 | OXO Addition and Subtraction | ZX-Spectrum 48K | English |
| 19550 | OXO Anagrams | ZX-Spectrum 48K | English |
| 19551 | OXO Multiplication and Division | ZX-Spectrum 48K | English |
| 28123 | Obroty i Symetrie | ZX-Spectrum 48K | Polish |
| 28132 | Odbicie Swiatla | ZX-Spectrum 48K | Polish |
| 28131 | Odczytywanie Skali Miernika | ZX-Spectrum 48K | Polish |
| 14006 | Odd One Out | ZX-Spectrum 48K | English |
| 10013 | Oil Strike | ZX-Spectrum 48K | English |
| 40477 | Ol' Faithful | ZX80 | English |