The simulator of the game called The Evolution of Trust.
Basically, there are 5 types of agents
CheatingAgent- always cheats.CooperatingAgent- always cooperates.GrudgerAgent- always cooperates until first betrayal, then always cheats.CopycatAgent- cooperates first, then repeats the last turn of opponent.DetectiveAgent- begins with sequence "cooperate", "cheat", "cooperate", "cooperate". If opponent never cheated, then always cheats. Otherwise, plays as copycat agent.