2) The source code is available (in C) - if you're interested, look around for it in Developer forums
3) To play, hit the Help key on your extended keyboard or select Help from the menu
4) Requires System 6.0.5 or more recent, 256 colors, and at least a 13" monitor
5) A PowerPC native version (fat binary actually) exists but the sound CallBack() routines aren't working for some reason - when I hear from Metroworks and get a fix, I may post it