Optimal strategy-Strategy that maximizes player's expected payoff. Cooperative game-Game in which participants can negotiate binding contracts that allow them to plan joint strategies. Noncooperative game-Game in which negotiation and enforcement of binding contracts between players are not possible.  Optimal strategy - Strategy that maximizes player’s expected payoff.  Cooperative game - Game in which participants can negotiate binding contracts that allow them to plan joint strategies.  Noncooperative game - Game in which negotiation and enforcement of binding contracts between players are not possible