Originally published as a BASICODE program (it appears on the compilation The Best of Basicode 6) meaning it can be adapted to run on various microcomputers. A BBC BASIC version is widely available and the original BASICODE listing states that the game was originally developed on the ZX Spectrum.
Ported to the TRS-80 MC-10, Dragon 32 and TRS-80 Coco by Jim Gerrie. Jim's translated English version is also available.
An English port of the game for BBC Micro was created in 2020 by Lurkio. More details at Github
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