Before revision:  Biol. (2018) . A successful strategyforms a cooperative Nash equilibrium in the presence of implementation errorwhile assuring that the long-term payoff never becomes less than the co-players' regardless of their strategies, when the error rate is small.
After revision:  Biol. (2018) iterated three-person public-goods game: By a successful strategy, we mean that it constitutes a cooperative Nash equilibrium in the presence of implementation errorwhile assuring that the long-term payoff never becomes less than the co-players' regardless of their strategies, when the error rate is small.