| 36602 | This Game Will Pit Man Against Machine | ZX-Spectrum 48K | English |
| 38757 | This Old House | ZX81 16K | English |
| 36540 | This is CYAN | ZX-Spectrum 48K | English |
| 5237 | Thomas the Tank Engine & Friends | ZX-Spectrum 48K | English |
| 22508 | Thomas the Tank Engine II | ZX-Spectrum 48K | English |
| 11029 | Thomas the Tank Engine's Fun With Words | ZX-Spectrum 48K | English |
| 12507 | Thor | ZX-Spectrum 128K | English |
| 35529 | Thor 4 Pack | ZX-Spectrum 48K | English |
| 37913 | Thor Game | Sinclair QL | English |
| 39119 | Thorn EMI C20 Cassette Type In | ZX81 1K | English |
| 34299 | Thoroughly Modern Willy | ZX-Spectrum 48K | English |
| 25975 | Threads | ZX-Spectrum 16K | English |
| 22171 | Three | ZX-Spectrum 48K | English |
| 23314 | Three Blind Mice | ZX-Spectrum 48K | English |
| 26777 | Three Blind Mice | ZX-Spectrum 16K | English |
| 24541 | Three Compulsive Games | ZX-Spectrum 48K | English |
| 12173 | Three Days in Carpathia | ZX-Spectrum 48K | English |
| 40652 | Three In A Row | ZX80 | English |
| 25020 | Three New Character Sets | ZX-Spectrum 48K | English |
| 41042 | Three Towers | ZX81 16K | English |