| 29499 | Colditz | ZX81 16K | English |
| 28768 | Colditz Castle | ZX81 16K | English |
| 25110 | Colditz Castle + The Wizard | ZX-Spectrum 48K | English |
| 9613 | Colditz Escape | ZX-Spectrum 48K | English |
| 1007 | Colin the Cleaner | ZX-Spectrum 48K | English |
| 15715 | Colin the Cleaner + Big Ben Strikes Again | ZX-Spectrum 48K | English |
| 12267 | Colin the Cleaner + Who Said That? | ZX-Spectrum 48K | English |
| 30355 | Colin's Crimbo Caper! | ZX-Spectrum 48K | English |
| 31262 | Collateral Damage | - | English |
| 36220 | Collect-a-Key | ZX-Spectrum 16K | English |
| 7325 | Collected Works | ZX-Spectrum 48K/128K | English |
| 8025 | Collector's Pack | ZX-Spectrum 48K | English |
| 28769 | Collectors Corner | ZX81 16K | English |
| 30714 | Collier's First Law of Usenet | - | English |
| 2000068 | Collins Gem Dictionary of Computing | - | English |
| 2000525 | Collins Gem Micro Facts Sinclair ZX Spectrum | - | English |
| 39665 | Collision | ZX-Spectrum 16K/48K | English |
| 1010 | Collision Course | ZX-Spectrum 48K | English |
| 36102 | Collision Regulations | ZX-Spectrum 48K | English |
| 1012 | Collywobbles | ZX-Spectrum 48K | English |