 In more general settings, uncertainty does not stop at the opponents’ informational states. In international relations or economic bargaining, also the players’ motivations and preferences are not fully known to all parties involved. Within the corresponding extended form games, players may be uncertain about their opponents’ preferences and strategic options, whether they can afford a certain move or whether they actually possess the information they threatened to reveal. Obviously, uncertainty about preferences or available options will impact reasoning about the equilibria of a game. Strategic players might even try to exploit such uncertainties, for instance by pretending to have options they do not possess.