 Within a year of its release, the game had been ported to Atari ST, Sinclair Spectrum, PC and SNES.David Jones stated that after porting the game to 20 systems, he stopped keeping count of additional ports.Other commercial ports of the original game include 3DO, Acorn Archimedes, Apple IIgs, Apple Macintosh, CDTV, Commodore 64, NES, Sega Master System and Genesis, TurboGrafx-16, Philips CD-i and Sharp X68000.