| 18186 | Simetria | ZX-Spectrum 48K | Spanish |
| 39491 | Simetria Axial | ZX-Spectrum 48K | Portuguese |
| 13225 | Simon Saw | ZX-Spectrum 48K | English |
| 17600 | Simon's Shapes | ZX-Spectrum 48K | English |
| 12630 | Simple Arithmetic | ZX-Spectrum 48K | English |
| 19531 | Simple Equations | ZX-Spectrum 48K | English |
| 23312 | Simple Simon | ZX-Spectrum 48K | English |
| 14984 | Simulador de Control de Procesos | ZX-Spectrum 48K | Spanish |
| 43237 | Simulatore di porte logiche | ZX-Spectrum 48K | Italian |
| 40729 | Simultaneous Equations | ZX81 16K | English |
| 27398 | Sinais de Transito | ZX-Spectrum 48K | Portuguese |
| 38032 | Sistema Diedrico Ortogonal | ZX-Spectrum 48K | Spanish |
| 42228 | Sistema Periodico | ZX-Spectrum 48K | Spanish |
| 16580 | Sistema Solar | ZX-Spectrum 48K | Spanish |
| 16602 | Sistemas Elementales | ZX-Spectrum 48K | Spanish |
| 16597 | Sistemas No Lineales | ZX-Spectrum 48K | Spanish |
| 37503 | Sistemas de Ecuaciones | ZX-Spectrum 16K/48K | Spanish |
| 16606 | Sistemas de Inecuaciones | ZX-Spectrum 48K | Spanish |
| 9183 | Size Sorter | ZX-Spectrum 16K | English |
| 44602 | Slovník | ZX-Spectrum 48K | Czech |