Back to the Future Part III (or Back to the Future III) is the title of a video game published by Sega Genesis and based on the movie Back to the Future - Part III. The title is different from the game Back to the Future Part II & III published previously by Nintendo. The game was converted in 1991 for the Sega Mega Drive, Amiga, Amstrad CPC, Atari ST, Commodore 64, DOS, Sega Master System and ZX Spectrum. All conversions of the title are more or less identical. The game was developed by Probe Software and published by Image Works and Arena Entertainment (SEGA).