This is a brief survey describing some of the recent progress and open problems in the area of cooperative games with incomplete information. We discuss exchange economies, cooperative Bayesian games with orthogonal coalitions, and issues of cooperation in non-cooperative Bayesian games.

Consider the problem of information disclosure for a planner who faces two agents interacting in a state-dependent multi-action prisoners?dilemma. We ?nd conditions under which the planner can make use of his superior information by disclosing some of it to the agents, and conditions under which...

Implementation in iteratively undominated strategies relies on permissive conditions. However, for the sufficiency results available, authors have relied on assumptions that amount to quasilinear preferences on a numeraire. We uncover a new necessary condition that implies that such assumptions...