• Elevator
• Traffic / traffic lights
• Ants (swarm behaviour)
• Predator / prey
• Biomorphs
• Weasel program
• Doves vs Hawks game
• Genetic algorithms for:
  • Tic-Tac-Toe (Noughts and Crosses)
  • Iterated Prisoners Dilemma (and other games from game theory — see link below)
  • Other simple games (see below)

Links:

• http://en.wikipedia.org/wiki/List_of_games_in_game_theory
• http://cs.nyu.edu/~hain/wator/
• http://www.lutanho.net/stroke/online.html