| 35983 | Secret Code | ZX81 1K | English |
| 35990 | Secret Message | ZX81 1K | English |
| 19147 | Secret Message Maker | ZX-Spectrum 16K | English |
| 20487 | Secret Mission | ZX-Spectrum 48K | English |
| 6947 | Secret Mission | ZX-Spectrum 48K | English |
| 23118 | Secret Mission Radio | ZX-Spectrum 48K | English |
| 10919 | Secret Valley | ZX-Spectrum 48K | English |
| 19136 | Secret Weapon | ZX-Spectrum 16K | English |
| 22656 | Secrets of Love | ZX-Spectrum 128K | English |
| 43394 | Secrets: The Castle of Doom | ZX-Spectrum 48K | English |
| 45197 | Sect | ZX-Spectrum Next | English |
| 30059 | Sector | ZX-Spectrum 48K/128K | English |
| 45503 | Sector | ZX81 16K | English |
| 4391 | Sector 90 | ZX-Spectrum 48K | English |
| 22552 | Sector Search | ZX-Spectrum 48K | English |
| 39100 | Sector Strike! | ZX-Spectrum 48K | English |
| 34378 | Sector and Sector Invasion | ZX-Spectrum 48K | English |
| 30148 | Sector: Invasion | ZX-Spectrum 48K/128K | English |
| 26957 | Securdrive | ZX-Spectrum 16K | English |
| 26958 | Securifile | ZX-Spectrum 16K | English |