| ID | Title | Machine | Language |
|---|---|---|---|
| 41191 | Junior Jackpot | ZX81 16K | English |
| 39646 | Junior Maths | ZX81 16K | English |
| 31694 | Junior Maths 1 | ZX81 16K | - |
| 31695 | Junior Maths 2 | ZX81 16K | - |
| 29006 | KALABRIA | ZX81 16K | English |
| 39639 | Kaleidoscope | ZX81 16K | English |
| 33423 | Kaleidoscope | ZX81 16K | - |
| 43305 | Kalender | ZX81 16K | German |
| 40690 | Kalki the Mind Reader | ZX81 16K | English |
| 29007 | Kamel | ZX81 16K | German |
| 43653 | Kapitän Nero | ZX81 16K | German |
| 35542 | Karel | ZX81 16K | Czech |
| 31696 | Kasino Kraps | ZX81 16K | - |
| 29008 | Kegeln | ZX81 16K | German |
| 40742 | Keyboard Reverse | ZX81 16K | English |
| 31698 | Keys To Gondrun | ZX81 16K | English |
| 41012 | Killer Cornflake | ZX81 16K | English |
| 29010 | Kimcalc | ZX81 16K | English |
| 31699 | Kingdom of Nam | ZX81 16K | - |
| 29011 | Kleurcode Weerstanden | ZX81 16K | German |