| 11088 | The Key | ZX-Spectrum 48K | English |
| 9874 | The Key of Hope | ZX-Spectrum 48K | English |
| 6530 | The Key to Time | ZX-Spectrum 48K | English |
| 6531 | The Khangrin Plans | ZX-Spectrum 128K | English |
| 6537 | The Kingdom of Krell | ZX-Spectrum 128K | English |
| 17138 | The Knight's Arena | ZX-Spectrum 128K | English |
| 6543 | The Knight's Quest | ZX-Spectrum 48K | English |
| 29014 | The Knight's Quest | ZX81 16K | English |
| 40174 | The Knight's Tour | ZX-Spectrum 48K | English |
| 40436 | The Knight's Tour | ZX81 16K | English |
| 2748 | The Korth Trilogy 1: Escape from Arkaron | ZX-Spectrum 16K | English |
| 2751 | The Korth Trilogy 2: Besieged | ZX-Spectrum 16K | English |
| 2754 | The Korth Trilogy 3: Into the Empire | ZX-Spectrum 16K | English |
| 6548 | The Krazy Kartoonist Kaper | ZX-Spectrum 128K | English |
| 14691 | The Krazy Kartoonist Kaper + Grue-Knapped | ZX-Spectrum 48K | English |
| 2776 | The Krypton Factor | ZX-Spectrum 48K | English |
| 18971 | The L-Game | ZX-Spectrum 16K | English |
| 19665 | The L-Game | ZX-Spectrum 48K | English |
| 22208 | The Labeller | ZX-Spectrum 48K | English |
| 6552 | The Labours of Hercules | ZX-Spectrum 48K | English |