List of contributors; Editor's preface; 1. Foundations of game theory Kenneth J. Binmore; 2. Refinements of Nash equilibrium Eric van Damme; Discussion of 'Foundations of game theory', Kenneth G. Binmore and 'Refinements of Nash equilibrium,' Eric van Damme Eddie Dekel; 3. Explaining cooperation and commitment in repeated games Drew Fudenberg; 4. Repeated games: cooperation and rationality David G. Pearce; Comments on the interpretation of repeated games theory Ariel Rubinstein; 5. Implementation, contracts and renegotiation in environments with complete information John Moore; 6. Implementation in Bayesian equilibrium: the multiple equilibrium problem in mechanism design Thomas R. Palfrey; Implementation theory: discussion Mathias Dewatripont.