| 36066 | Cocoa and the Time Machine | ZX-Spectrum 48K/128K | English |
| 40537 | Coconuts | ZX81 16K | English |
| 13238 | Coconuts | ZX-Spectrum 16K | English |
| 32273 | Cocozoi 2 | ZX-Spectrum 48K | Romanian |
| 35732 | Code | ZX81 1K | English |
| 39911 | Code Breaker | ZX-Spectrum 48K | English |
| 40005 | Code Cracker | ZX81 16K | English |
| 34491 | Code IV | ZX81 16K | English |
| 17373 | Codemaster | ZX-Spectrum 48K | English |
| 43803 | Coin Drop | ZX-Spectrum 16K/48K | English |
| 18556 | Col. Llamas | ZX-Spectrum 48K | Spanish |
| 29499 | Colditz | ZX81 16K | English |
| 9613 | Colditz Escape | ZX-Spectrum 48K | English |
| 1008 | Coliseum | ZX-Spectrum 48K | - |
| 36220 | Collect-a-Key | ZX-Spectrum 16K | English |
| 1012 | Collywobbles | ZX-Spectrum 48K | English |
| 36342 | Coloco | ZX-Spectrum 48K | English |
| 38821 | Colonos III | ZX-Spectrum 48K/128K | Multi-language: English, Spanish |
| 35338 | Colonos ZX | ZX-Spectrum 48K | Spanish |
| 42348 | Colony Invader | ZX-Spectrum 48K | English |