DOOM

Doom for the ZX Spectrum was an unauthorized fan game version of Doom for the Sinclair ZX Spectrum home computer system running the TR-DOS operating system. It was developed by Spectrum programmers Sauron and RPSG of the Russian Digital Reality demo team. An early demo was included as a covertape feature in a 1997 issue of ZX Files Megatape 1. A more fleshed-out pre-release version 1.5 was also made available later. A final complete version of the game was never released, however.