31 Dec 1987
31 Dec 1988 - Amiga
31 Dec 1988 - Atari ST/STE
31 Dec 1988 - Amstrad CPC
31 Dec 1987 - Atari 8-bit
31 Dec 1988 - Commodore C64/128/MAX
31 Dec 1987 - DOS
31 Dec 1988 - ZX Spectrum