Based upon the 86 version. This version is a little better (except for the wall-graphics.) But after playing Peversi I really think the Othello rules are much better, plus these levels in Orbix don't work. They're not real exciting, and there's two you'll always lose if you start second. The computer is bad. In most levels you can defeat the AI with just a few moves. Also needs multiplayer option. Not real coolez or anything, imho.