fractions meeting the game conditions in the first column. The types of single-step games are abbreviated PD, SH. HD and HG for Prisoners Dilemma, Stag Hunt, Hawk-Dove game, and Harmony Game. Exact results were obtained by integration in Mathematica (Wolfram Research. Inc., 2018). Percentages are rounded

d related games, the payoff to an individual is higher if it matches the partner's behavior regardless of what that behavior is. Cooperators in the Stag Hunt go for the big game, a stag, which two such individuals can catch but one alone cannot. Non-cooperators opt out of the big-game hunt and accept a