| 19674 | Sir Francis Drake | ZX-Spectrum 48K | English |
| 4518 | Sir Fred | ZX-Spectrum 48K | - |
| 30114 | Sir Froggy | ZX-Spectrum 48K | English |
| 22417 | Sir Gawain | ZX-Spectrum 48K | Spanish |
| 14495 | Sir Knight | ZX-Spectrum 48K | English |
| 4522 | Sir Loin | ZX-Spectrum 48K | English |
| 6978 | Sir Sigfrid | ZX-Spectrum 48K | Spanish |
| 28146 | Sir Vamperi | ZX-Spectrum 48K | Spanish |
| 26435 | Sire Fire | ZX-Spectrum 48K | Italian |
| 26454 | Sire Fire 2 | ZX-Spectrum 48K | Italian |
| 16184 | Sirius | ZX-Spectrum 48K | Spanish |
| 38032 | Sistema Diedrico Ortogonal | ZX-Spectrum 48K | Spanish |
| 27309 | Sistema Editor de Adventures | ZX-Spectrum 48K | Portuguese |
| 19108 | Sistema Experto de Flores de Jardin | ZX-Spectrum 48K | Spanish |
| 19109 | Sistema Experto de Minerales | ZX-Spectrum 48K | Spanish |
| 17867 | Sistema Grafico PIN | ZX-Spectrum 48K | Spanish |
| 42228 | Sistema Periodico | ZX-Spectrum 48K | Spanish |
| 16580 | Sistema Solar | ZX-Spectrum 48K | Spanish |
| 42281 | Sistema de Ficheiro: Datafile | ZX-Spectrum 48K | Portuguese |
| 16602 | Sistemas Elementales | ZX-Spectrum 48K | Spanish |