The Neuralbot page has the first release of what's described as "an automated Quake2 deathmatch opponent(bot) that uses an artificial neural network to control its actions and a genetic algorithm to train its neural network." Thanks Ozh. According to the site, "The bot is basically totally autonomous; that is no pre-programmed behaviours are included in its AI code." The first version of the code allows anyone who wants to train a bot to do so. The caveat is: "it learns, but not particularly well. I'm talking about hours of training for a simple 'turn and shoot at opponent' behaviour - if you're lucky." Exciting stuff nonetheless.