| ID | Title | Machine | Language |
|---|---|---|---|
| 29017 | Knoop | ZX81 16K | Dutch |
| 29018 | Kolenmijn | ZX81 16K | Dutch |
| 33425 | Kong | ZX81 16K | - |
| 41449 | Kong Jump | ZX81 16K | English |
| 40952 | Kong Leap | ZX81 16K | English |
| 31701 | Kongs Revenge | ZX81 16K | - |
| 29020 | Kosten | ZX81 16K | Dutch |
| 31702 | Krakit | ZX81 16K | - |
| 31703 | Krakit Demo | ZX81 16K | - |
| 29024 | Krazy Kong | ZX81 16K | English |
| 44512 | Krazy Kong | ZX81 16K | English |
| 31943 | Krazy Kong - Chroma Edition | ZX81 16K | English |
| 44134 | Kriger | ZX81 16K | Danish |
| 31704 | Krypton Ordeal | ZX81 16K | - |
| 43299 | Kurvendiskussion | ZX81 16K | German |
| 37388 | L'île Au Trésor | ZX81 16K | French |
| 32028 | L-Systems | ZX81 16K | English |
| 29028 | LANDSCAP | ZX81 16K | English |
| 42495 | LIFE | ZX81 16K | Portuguese |
| 41767 | LIST | ZX81 16K | Portuguese |