Evolved HMM 5 Cooperation Rate Heatmap Left: no noise | Right: 5% noise Evolved HMM 5 Opponent Cooperation Rate Heatmap Left: no noise | Right: 5% noise Evolved HMM 5 Mean Score Heatmap Left: no noise | Right: 5% noise Evolved HMM 5 Mean Score Difference Heatmap Left: no noise | Right: 5% noise