| 30417 | Circuitry | ZX-Spectrum 48K/128K | English |
| 967 | Circus Games | ZX-Spectrum 48K/128K | English |
| 6091 | Cloud 99 | ZX-Spectrum 48K/128K | English |
| 12777 | Cobble 2 | ZX-Spectrum 48K/128K | Russian |
| 999 | Cobra Force | ZX-Spectrum 48K/128K | English |
| 39073 | Cocaine Bear | ZX-Spectrum 48K/128K | English |
| 36066 | Cocoa and the Time Machine | ZX-Spectrum 48K/128K | English |
| 30380 | Code Zero | ZX-Spectrum 48K/128K | English |
| 33352 | ColdSnap Audio | ZX-Spectrum 48K/128K | - |
| 7325 | Collected Works | ZX-Spectrum 48K/128K | English |
| 38821 | Colonos III | ZX-Spectrum 48K/128K | Multi-language: English, Spanish |
| 9324 | Color Draw | ZX-Spectrum 48K/128K | Czech |
| 12781 | Color Lines | ZX-Spectrum 48K/128K | Russian |
| 1016 | Coloris | ZX-Spectrum 48K/128K | English |
| 35334 | Coloristic | ZX-Spectrum 48K/128K | English |
| 9892 | Comando Tracer | ZX-Spectrum 48K/128K | - |
| 1028 | Combat School | ZX-Spectrum 48K/128K | English |
| 25258 | Communication Data Operating System | ZX-Spectrum 48K/128K | English |
| 5797 | Compendium | ZX-Spectrum 48K/128K | English |
| 12381 | Complete Machine Code Package | ZX-Spectrum 48K/128K | English |