| 29340 | Stock Market | ZX81 16K | English |
| 31817 | Stock Market Game | ZX81 16K | - |
| 31818 | Stock Market Tech. Analysis 1 | ZX81 16K | - |
| 45175 | Stone | ZX81 16K | English |
| 40885 | Stopping Distance | ZX81 16K | English |
| 40720 | Storage Technique | ZX81 16K | English |
| 40091 | Storing Data Above RAMTOP | ZX81 16K | English |
| 29656 | Storm | ZX81 16K | English |
| 39356 | Stormforce | ZX81 16K | English |
| 44154 | Stormforce + Starbuster | ZX81 16K | English |
| 31820 | Strategy Football | ZX81 16K | - |
| 29343 | Street Racer | ZX81 16K | German |
| 41501 | String Sort | ZX81 16K | English |
| 35574 | String Sort | ZX81 16K | English |
| 40847 | Strobe | ZX81 16K | English |
| 32060 | Stud | ZX81 16K | English |
| 40466 | Stunt Rider | ZX81 16K | English |
| 29657 | Stunt Rider | ZX81 16K | English |
| 39656 | Sub Hunt | ZX81 16K | English |
| 38080 | Sub vs Sub | ZX81 16K | English |