| 11292 | James Bond 007 Action Pack | ZX-Spectrum 48K | English |
| 4000043 | JazzoFire! | Timex Tx2068 | English |
| 20290 | Jega Tape 1 | ZX-Spectrum 16K | English |
| 20291 | Jega Tape 2 | ZX-Spectrum 16K | English |
| 17394 | Jenny's Big Disk Vol 1 | ZX-Spectrum 128 +3 | English |
| 17395 | Jenny's Big Disk Vol 2 | ZX-Spectrum 128 +3 | English |
| 17396 | Jenny's Next Big Disk Vol 1 | ZX-Spectrum 128 +3 | English |
| 17397 | Jenny's Next Big Disk Vol 2 | ZX-Spectrum 128 +3 | English |
| 11293 | Jewels of Darkness | ZX-Spectrum 48K/128K | English |
| 36820 | Jogos 3 | ZX81 64K | Portuguese |
| 12455 | Joystick Thunder | ZX-Spectrum 48K | English |
| 29696 | Julian Rignall's All Time Top Ten | - | - |
| 12278 | Jumpy Snake Blues + Honky Tonk | ZX-Spectrum 48K | English |
| 9186 | Junior Education | ZX-Spectrum 16K | English |
| 13909 | KA1 Assembler + KD1 Disassembler | ZX-Spectrum 48K | English |
| 15776 | Kamikaze + Gopher | ZX-Spectrum 48K | English |
| 11823 | Karate Ace | ZX-Spectrum 48K | English |
| 22695 | Kick Off Collection | ZX-Spectrum 48K | English |
| 25104 | Kidnapped + For Pete's Sake | ZX-Spectrum 128 +3 | English |
| 11826 | Kids Pack | ZX-Spectrum 48K | English |