The 6th International Symposium on Algorithmic Game Theory (SAGT) will take place in Aachen, Germany, from October 21 to October 23. The purpose of SAGT is to bring together researchers from Computer Science, Economics, Physics, Biology and Mathematics to present and discuss original research at the intersection of Algorithms and Game Theory. The program of SAGT will include both invited lectures and presentations for refereed submissions. Authors are invited to submit previously unpublished work for possible presentation at the conference.