Game Theory has served as a standard text for game theory courses since the publication of the First Edition in 1968. The Fourth Edition updates several recently developed subfields. It adds fresh chapters on subjects such as games with incomplete information and spatial games. Owen has expanded ""Two-Person General-Sum Games"" into two chapters, the second becoming ""Two-Person Cooperative Games."" There are new sections in the chapters ""Two-Person Cooperative Games"" and ""Indices of Power,"" and there is new information throughout the book on non-cooperative games. ""Game Theory"" remains