The original BBC Micro version by Acorn Electron was ported to numerous platforms including Tatung Einstein, Acorn Archimedes and Steam.
Was also advertised in Japan during 1990-1992 as coming soon. Strangely enough, it seems to say it is a MSX2 game on 2DD even though the screenshots seem to be from the MSX1 version. It does not appear to have ever been released. Japanese version was announced canceled on MSX FAN 1992-06 page 115.