Sierra released three versions of "Space Quest": the original 1986 AGI V2 release, the 1987 AGI V3 release, and the 1990 VGA release. Aside from minor sound and graphic differences, the PC, Amiga, Atari ST, and Apple IIGS versions are largely identical. The Mac version is considerably different, however, being monochrome and completely menu-driven. "Space Quest I" also had an 8-bit Apple II version for the IIe and IIc. This had no pull down menus and displayed all text at the bottom of the screen.