| 23502 | Islands | ZX-Spectrum 128K | English |
| 18540 | Isotopia | ZX-Spectrum 128K | Spanish |
| 12877 | Ivan Tsarevich | ZX-Spectrum 128K | Russian |
| 45009 | JAAM Rivals | ZX-Spectrum 128K | Spanish |
| 10558 | JSW: Where's Woody? | ZX-Spectrum 128K | English |
| 12878 | Jackals | ZX-Spectrum 128K | English |
| 2572 | Jahangir Khan's World Championship Squash | ZX-Spectrum 128K | English |
| 22450 | Jap Song | ZX-Spectrum 128K | English |
| 12880 | Japan Crossword | ZX-Spectrum 128K | English |
| 12881 | Japanese Contrast | ZX-Spectrum 128K | Russian |
| 7492 | Jarre-Live | ZX-Spectrum 128K | English |
| 7493 | Jerusalem | ZX-Spectrum 128K | English |
| 17533 | Jet Cat Frosya | ZX-Spectrum 128K | English |
| 30978 | Jet Set Bulimic | ZX-Spectrum 128K | English |
| 2594 | Jet Set Willy 128K | ZX-Spectrum 128K | English |
| 14529 | Jet Set Willy 5: ZX Heroes | ZX-Spectrum 128K | English |
| 17348 | Jet Set Willy 64 | ZX-Spectrum 128K | English |
| 17349 | Jet Set Willy 64: Dragon | ZX-Spectrum 128K | English |
| 22226 | Jet Set Willy 64: Flash Manic Miner | ZX-Spectrum 128K | English |
| 17351 | Jet Set Willy 64: Manic Miner | ZX-Spectrum 128K | English |