| 35193 | Itsy Bitsy Spider | ZX81 1K | English |
| 12876 | Ivan the Stupid | ZX-Spectrum 48K | Russian |
| 18412 | Ivasive Action | ZX-Spectrum 16K | English |
| 30748 | Ivor the Engine | ZX-Spectrum 16K | English |
| 17551 | Izzy Wizzy | ZX-Spectrum 48K | English |
| 44613 | J.R.'s Rival | Lambda 8300 | Danish |
| 45009 | JAAM Rivals | ZX-Spectrum 128K | Spanish |
| 31292 | JET-ROCKET | ZX-Spectrum 48K | English |
| 19190 | JINJ | ZX-Spectrum 48K/128K | - |
| 27381 | JINJ 2: Belmonte's Revenge | ZX-Spectrum 48K/128K | English |
| 39429 | Jack Dragon | ZX-Spectrum 48K/128K | English |
| 41382 | Jack in the Box | ZX-Spectrum 16K | English |
| 18057 | Jack y el Arca Maravillosa | ZX-Spectrum 48K | Spanish |
| 40141 | Jackpot | ZX81 16K | English |
| 41379 | Jackpot | ZX81 16K | English |
| 10540 | Jagd | ZX-Spectrum 48K | English |
| 2576 | Jail Break | ZX-Spectrum 48K | English |
| 44669 | Jailbreak | ZX81 16K | English |
| 41618 | Jailbreak | ZX81 16K | English |
| 13246 | Jam Sandwich | ZX-Spectrum 16K | English |