| 19590 | 2-Player Chess + 4-Cube Brain Teaser | ZX-Spectrum 16K | English |
| 2000001 | 20 Best Programs for the ZX Spectrum | - | English |
| 19244 | 20 Character Set Fonts | ZX-Spectrum 48K | English |
| 23625 | 20 Character Sets | ZX-Spectrum 48K | English |
| 11448 | 20 Character Sets | ZX-Spectrum 48K | English |
| 11172 | 20 Chart Busters | ZX-Spectrum 48K | English |
| 11173 | 20 Game Pack | ZX-Spectrum 48K | English |
| 2000003 | 20 Programs for the ZX Spectrum and 16K ZX81 | - | English |
| 31002 | 20 Questions | Jupiter ACE | English |
| 2000005 | 20 Simple Electronic Projects for the ZX81 & Spectrum | - | English |
| 2000004 | 20 Simple Electronic Projects for the ZX81 and Other Computers | - | English |
| 24 | 20 Tons | ZX-Spectrum 48K | English |
| 19586 | 20 ZX Spectrum Programs | ZX-Spectrum 16K | English |
| 10427 | 20-20 Vision | ZX-Spectrum 48K | English |
| 31003 | 200. Yes, 200 but With da big Balls | ZX-Spectrum 48K | English |
| 30652 | 2001 - A Spec Odyssey | - | English |
| 23593 | 2001½ - A Space Idiot | ZX-Spectrum 48K | English |
| 25 | 2003 | ZX-Spectrum 48K | English |
| 31137 | 2010, a Philatelists Odyssey | ZX-Spectrum 48K | English |
| 12234 | 2011 | ZX-Spectrum 48K | English |