"Algorithmic Game Theory" is a comprehensive collection of research papers documenting the proceedings of the Second International Symposium on Algorithmic Game Theory. This conference took place in October 2009 in Paphos, Cyprus, and brought together experts to discuss the latest developments in this dynamic research field. The 29 revised full papers and 3 invited talks were selected from 55 submitted works and provide deep insights into various aspects of game theory. The topics covered range from solution concepts and classes of games to algorithmic mechanism design and the economic implications of distributed systems. This book is a valuable resource for researchers, students, and professionals engaged with the algorithmic and economic aspects of games and markets.