| 30031 | Cronopios y Famas | ZX-Spectrum 48K/128K | Multi-language: English, French, German, Italian, Portuguese, Spanish |
| 17177 | Cronos | ZX-Spectrum 48K | Spanish |
| 9640 | Crossbow - Legend of William Tell | ZX-Spectrum 48K | English |
| 1175 | Crusader | ZX-Spectrum 48K | English |
| 44151 | Crusaders Mission Adventure | ZX-Spectrum 48K | English |
| 31032 | Crysis | ZX-Spectrum 128 +2 | English |
| 1179 | Crystal Castles | ZX-Spectrum 48K | English |
| 9339 | Crystal Kingdom Dizzy | ZX-Spectrum 48K/128K | English |
| 30381 | Crystal Kingdom Dizzy 2017 | ZX-Spectrum 128K | English |
| 44322 | Crystal Kingdom Dizzy 2025 - Redux Edition | ZX-Spectrum 128K | Multi-language: English, Russian |
| 17415 | Crystal Quest | ZX-Spectrum 48K | English |
| 35339 | Cuadragon | ZX-Spectrum 48K | Spanish |
| 22791 | Cupid | ZX-Spectrum 48K | English |
| 42645 | Cursed Castle | ZX-Spectrum 48K/128K | English |
| 43617 | Cursed Castle 2 | ZX-Spectrum 128K | English |
| 43950 | Cursed Castle DX | ZX-Spectrum 128K | English |
| 1195 | Cybernation | ZX-Spectrum 48K | English |
| 9650 | Cyborg | ZX-Spectrum 48K | English |
| 27027 | Cyborg 2900 | ZX-Spectrum 128K | German |
| 18866 | Cyborg: Intrussion 00 > 3D | ZX-Spectrum 48K | - |