The developers of two multi-player bot opponents have happened
upon the right formula, managing to convince human players they
were playing against actual people rather than computer
controlled chunks of code.  This gaming equivalent of the Turing
Test was passed by multi-player bots UT^2 and MirrorBot, which
gained “humanness” rating percentages of 52.2 per cent and 51.9
per cent respectively, in multi-player matches. Humans usually
only get humanness rating scores in the 40s, so they convinced
players they were more human than… actual humans.  The UT^2 bot
has been made publicly available if you’d like to face off
against it and own a copy of Unreal Tournament 2004, with the
coders sticking it up on their site for all to enjoy and get
irrationally angry with. [BotPrize via The Register]