Prisoner's Dilemma Tournament

14 strategies play round-robin. Adjust the rules. See what wins.

150
0%
3
5
Nice strategies Retaliatory Exploitative Random / chaotic
Bar chart showing total scores for each strategy after a round-robin tournament.
Press "Run tournament" to start. Default settings (150 rounds, 0% noise) should give Tit for Tat or Generous Tit for Tat the top spot. Try noise at 10% next. Watch what happens to Grim Trigger.

Payoff structure: P=1 (both defect), S=0 (sucker). Standard Prisoner's Dilemma requires T > R > P > S.