Roger Myerson's introductory text aims to provide a clear and thorough examination of the models, solution concepts, results, and methodological principles of nonco-operative and co-operative game theory. Myerson introduces, clarifies, and synthesizes the advances made in the subject over the past 15 years, presents an overview of decision theory, and comprehensively reviews the development of the fundamental models. Written as an introductory text, it looks at the subject from the viewpoint of a newcomer to the field, beginning with utility theory and arriving at the most sophisticated ideas discussed today.