Kung-Fu Master Returns is an attempt to remake the 1984 arcade classic, Irem's "Kung-Fu Master". The background music is a remix of the original game song, made by Tsu Ryu. Graphics are taken from several sources (most of them recent fighting games). The full list of credits, as well as the instructions for playing, are described in the documentation files. If you know the original game, you'll absolutely love this.