This volume constitutes the refereed proceedings of 18th International Symposium on Algorithmic Game Theory, SAGT 2025, held in Bath, UK, during September 2–5, 2025.The 26 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows:Computational and Algorithmic Aspects of Games; Facility Location; Fair Division and Resource Allocation; Markets and Matching; Bayesian Decision Making; Mechanism Design and Algorithmic Contracts and Computational Social Choice.

This volume constitutes the refereed proceedings of 18th International Symposium on Algorithmic Game Theory, SAGT 2025, held in Bath, UK, during September 2–5, 2025.The 26 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows:Computational and Algorithmic Aspects of Games; Facility Location; Fair Division and Resource Allocation; Markets and Matching; Bayesian Decision Making; Mechanism Design and Algorithmic Contracts and Computational Social Choice.

This book constitutes the refereed proceedings of the 7th International Symposium on Algorithmic Game Theory, SAGT 2014, held in Haifa, Israel, in October 2014. The 24 full papers and 5 short papers presented were carefully reviewed and selected from 65 submissions. They cover various important aspects of algorithmic game theory, such as matching theory, game dynamics, games of coordination, networks and social choice, markets and auctions, price of anarchy, computational aspects of games, mechanism design and auctions.

This volume constitutes the refereed proceedings of 18th International Symposium on Algorithmic Game Theory, SAGT 2025, held in Bath, UK, during September 2–5, 2025.The 26 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows:Computational and Algorithmic Aspects of Games; Facility Location; Fair Division and Resource Allocation; Markets and Matching; Bayesian Decision Making; Mechanism Design and Algorithmic Contracts and Computational Social Choice.

This volume constitutes the refereed proceedings of 18th International Symposium on Algorithmic Game Theory, SAGT 2025, held in Bath, UK, during September 2–5, 2025.The 26 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows:Computational and Algorithmic Aspects of Games; Facility Location; Fair Division and Resource Allocation; Markets and Matching; Bayesian Decision Making; Mechanism Design and Algorithmic Contracts and Computational Social Choice.

This book constitutes the refereed proceedings of the 7th International Symposium on Algorithmic Game Theory, SAGT 2014, held in Haifa, Israel, in October 2014. The 24 full papers and 5 short papers presented were carefully reviewed and selected from 65 submissions. They cover various important aspects of algorithmic game theory, such as matching theory, game dynamics, games of coordination, networks and social choice, markets and auctions, price of anarchy, computational aspects of games, mechanism design and auctions.