| 19588 | Defender | ZX-Spectrum 16K | English |
| 18711 | Defender | ZX-Spectrum 16K | English |
| 15991 | Defender | ZX-Spectrum 16K | English |
| 14316 | Defender | ZX-Spectrum 48K | English |
| 20026 | Defender + Squash + Theseus | ZX-Spectrum 16K | English |
| 11242 | Defender Light Gun | ZX-Spectrum 48K | English |
| 1321 | Defender of the Crown | ZX-Spectrum 48K | English |
| 36905 | Defender of the Crown 2021 | Pentagon 128 | English |
| 1323 | Defenders of the Earth | ZX-Spectrum 48K/128K | English |
| 28335 | Defenders of the Earth | SAM Coupé | English |
| 25749 | Defending Your Spectrum | ZX-Spectrum 48K | English |
| 1326 | Deffendar | ZX-Spectrum 48K | English |
| 24115 | Define Keys | ZX-Spectrum 48K | English |
| 26655 | Definer | ZX-Spectrum 48K | English |
| 8084 | Deflator | ZX-Spectrum 48K | English |
| 26020 | Deflector | ZX-Spectrum 48K | English |
| 25507 | Deflector | ZX-Spectrum 16K | English |
| 1327 | Deflektor | ZX-Spectrum 48K | English |
| 43426 | Deflexx | ZX81 16K | English |
| 43428 | Deflexx I & II | ZX81 16K | English |