| ID | Title | Machine | Language |
|---|---|---|---|
| 31921 | Calculus Mazximus | ZX81 1K | English |
| 29490 | Calendar | ZX81 1K | English |
| 31548 | Can of Worms | ZX81 1K | English |
| 35744 | Car Crash | ZX81 1K | English |
| 37194 | Car Log | ZX81 1K | - |
| 31922 | Car Race | ZX81 1K | English |
| 35762 | Cassette 60 - the 1K hires games | ZX81 1K | English |
| 35963 | Catch | ZX81 1K | English |
| 29492 | Catch Me | ZX81 1K | English |
| 35740 | Catch me if you can | ZX81 1K | English |
| 33410 | Catcher | ZX81 1K | - |
| 35934 | Chain Reaction | ZX81 1K | English |
| 31559 | Challenge | ZX81 1K | - |
| 35989 | Challenge | ZX81 1K | English |
| 35992 | Character Doodle | ZX81 1K | English |
| 36013 | Chase | ZX81 1K | English |
| 34694 | Chase The Ace | ZX81 1K | English |
| 1001074 | Cheetah 16K Ram Pack | ZX81 1K | - |
| 35183 | Chernobyl Bomber | ZX81 1K | English |
| 31924 | City Escape | ZX81 1K | English |