| 12901 | Kolobok Zoom: Teenage Mutant Hero | ZX-Spectrum 128K | English |
| 12903 | Kombatris | ZX-Spectrum 128K | Russian |
| 33424 | Kong | ZX80 | - |
| 33425 | Kong | ZX81 16K | - |
| 41449 | Kong Jump | ZX81 16K | English |
| 40952 | Kong Leap | ZX81 16K | English |
| 9886 | Kongman | ZX-Spectrum 48K | German |
| 21073 | Kool Eggz | ZX-Spectrum 48K | English |
| 38154 | Korova Milk Bar | ZX-Spectrum 48K/128K | Multi-language: English, Spanish |
| 2758 | Kosmic Kanga | ZX-Spectrum 48K | English |
| 2759 | Kosmic Pirate | ZX-Spectrum 48K | English |
| 27539 | Krack Through | ZX-Spectrum 48K | English |
| 39108 | Kraftfeld | ZX-Spectrum 48K | German |
| 14896 | Kraj | ZX-Spectrum 48K | Spanish |
| 16393 | Krakatoa | ZX-Spectrum 48K | Spanish |
| 2763 | Krakatoa | ZX-Spectrum 48K | English |
| 2764 | Krakatoa 2012 | ZX-Spectrum 48K | English |
| 25002 | Krakatoa 2012 | ZX-Spectrum 48K | English |
| 2765 | Kraken | ZX-Spectrum 48K | English |
| 2768 | Krakout | ZX-Spectrum 48K | English |