This is a course in game theory covering static and dynamic games of complete and incomplete information. The course will focus on the fundamental solution concepts for each type of game and important applications from economics. The broader theme that will run through such applications will be the notion of market failure. In the presence of strategic interaction, which game theory studies, individual maximization does not lead to Pareto efficiency. Applications will include oligopoly, externalities, public goods, auctions and problems arising from asymmetric information.