| 1014 | Colony | ZX-Spectrum 48K | English |
| 34920 | Colony | SAM Coupé | English |
| 25653 | Columbus | ZX-Spectrum 48K | English |
| 27762 | Comercio Cosmico | ZX-Spectrum 48K | Multi-language: English, Portuguese |
| 42233 | Compem | ZX-Spectrum 48K | Portuguese |
| 11607 | Computer Challenge - The Business Game | ZX-Spectrum 48K | English |
| 9622 | Conquering Everest | ZX-Spectrum 16K | English |
| 1068 | Corn Cropper | ZX-Spectrum 16K/48K | English |
| 9631 | Country Cottages | ZX-Spectrum 48K | English |
| 35218 | Coup D'etat | ZX-Spectrum 48K | Danish |
| 43711 | Crap Games Competition 5024c - The Simulator Adventure | ZX-Spectrum 48K | English |
| 28781 | Crash | ZX81 16K | English |
| 27520 | DST: Deep Space Trading | ZX-Spectrum 16K | English |
| 1227 | Dallas | ZX-Spectrum 16K/48K | - |
| 11063 | Das Boersenspiel | ZX-Spectrum 48K | German |
| 10299 | De Terrorist | ZX-Spectrum 48K | Dutch |
| 6152 | Death's Head Hole | ZX-Spectrum 48K | English |
| 43195 | Defender of the Gold | ZX-Spectrum 48K | Czech |
| 1388 | Dictator | ZX-Spectrum 48K | - |
| 28822 | Dictator | ZX81 16K | Dutch |