I don't think most of you know what AI actually is :-X Most games use state machines to drive behavior... that's about the top of the line as far as game AI goes due to time, processing and memory requirements of more advanced techniques. Not to mention that if any game used REAL AI methods, players would complain that the game was too hard. All it takes is a little GA to optimize behavior based off previous experience and a boss becomes unbeatable to most groups.