We can use all the methods that we’ve covered in this chapter to analyze the Challenge questions posed at the beginning of the chapter about a game where e-book reader manufacturers choose e-book standards. We’ll start by answering the question about the outcome if firms had engaged in a simultaneous-move game, where firms may use pure or mixed strategies. We’ll then address the question about the outcome given that Amazon entered the market first so it chose its standard before other firms using a sequential-move game, where we’ll solve for the subgame perfect Nash equilibrium.