Very good book on the theory of videogames. Accessible, innovative, thoughtful, and centered on concrete (and popular) examples. He also includes lots of screenshots, which is good.Juul takes what might be called a "grassroots" approach to game studies, not bringing heavy disciplinary baggage to colonize the area, but instead trying to build a formal theory of games from the ground up. He takes his lead primarily from game and culture theorists like Huizinga, Caillois, Crawford and Sutton-Smith rather than from literary theory or media studies. But he really charts his own course and stakes out his own ground in many ways.He has a strong interest in game rules, which has led some to criticize him for being overly formalistic, but I find this a refreshing and interesting contrast to the more standard "new media" approach to video games.