It appears that both the Commodore 64 and MS-DOS versions are lost (or maybe never made)

That flier says that the game was released for the ZX Spectrum, Amstrad CPC, Commodore (almost definitely C64), MSX, and PC Compatibles (MS-DOS). However, that Computer Emu Zone page was only able to find and document the Amstrad CPC, ZX Spectrum, and MSX versions. Both the Commodore version and MS-DOS version are missing. They cite José Carlos Arboiro as the main programmer, who presumably did the original ZX Spectrum version, and then they cite Javier Vila Lugo as the programmer for the Amstrad CPC and MSX versions. Given that they don't explicitly cite anyone for the Commodore version or the MS-DOS version, it makes me wonder if those versions were planned, but never actually released, or even never made at all.