An Introduction To Game Theory, written by Martin J. Osborne, is a non-fictional work that presents the underlying principles of game theory. It also demonstrates how these principles can be successfully used to interpret myriad biological, social, economic, and political phenomena. It presents game-theoretic reasoning in a generic and logical manner. The focus is on the broader understanding of concepts rather than on mathematical expression. The topics are explained in a simple and lucid manner, supplemented by relevant examples, illustrations, and exercises. Key concepts are highlighted, and some of the concepts covered in the book are strategic games, coalitional games, evolutionary equilibrium, bargaining theory, and Bayesian games. The book was published in 2003 by Oxford University Press. It has been used as a textbook for various undergraduate courses. This particular edition is a 2005 reprint.