Evolutionary Space Invaders: shoot the aliens as a genetic algorithm modifies them
by Cory Doctorow from on (#42DSN)
InvaderZ is a Space Invaders variant that incorporates a genetic algorithm that mutates the invaders as you shoot at them, with survival for a fitness function: the longer an invader lasts before being blasted out of the sky, the more its behaviors are carried over into the next wave (here's a playable live version). (via Kottke)