I'm thinking about a game where the user tweaks the AI to accomplish a goal.
Specifically, a predator/prey type game, with the AI controlling the flocking behavior/agressiveness.
In each round, you set the parameters that control the behaviour of the hunters or the prey, and let them go at it.
Do well, and have a lot of survivors at the end, and you get extra points to spend on tweaking your species the next time around.
After 10 rounds of playing, all the creatures so far are let loose in an area at once.
Cheers from the frozen wasteland that is Ottawa.
Dan.