Adventure Construction Set (ACS) is a program used to construct Ultima-type games, written by graphic adventure game pioneer Stuart Smith and published in 1985 by Electronic Arts. The game was produced by Don Daglow, with art by Smith and Connie Goldman and music by Dave Warhol. It was initially developed for the Commodore 64 and Apple II, but then ported to the Amiga in 1986 and DOS in 1987. [source:wikipedia]