Playing for Susan.- No Mathematics.- The Prisoners' Dilemma, but Who Are the Players?.- The Nash Equilibrium.- Sequence of Moves and the Extensive Form.- Chaos, Too Many and Too Few.- Which Strategy to Choose?.- The Subgame Perfect Equilibrium.- Forever and a Day.- Mixed Strategies and Expected Utility.- More than Two Players.- Bargaining and Bargaining Games.- Goethe's Price Games, Auctions, and Other Surprises.