Chapter Two discusses criteria for singling out one Nash equilibrium as the solution of a game. Population games and evolutionary stable strategies appear. Chapter Three introduces cooperative games. Chapter Five studies the Prisoner's Dilemma and the evolution of cooperation. Chapter Six analyzes a number of population games that illustrate various sorts of animal behavior.
Chapter Seven takes a look back and considers the examples in a broader, more philosophical context.
A number of topics from a standard introduction to game theory are covered, but not all of them. For example, the minimax theorem for zero-sum games arises only tangentially, and is never formally stated, let alone proved. My only reason for mentioning it is so that nobody mistakes this book for an ordinary game theory book with a slight modelling flavor. Each chapter contains a large number of well chosen exercises. An appendix contains solutions for most of the exercises.