The author takes an in-depth look at the fantasy religions that exist in 34 different massively multiplayer online roleplaying games. He categorizes the religions, noting similarities across the games. He points, for instance, to the prevalence of polytheism: a system which, Bainbridge argues, can function as an effective map of reality in which each deity personifies a concept. Religions are as much about conceptualizing the self as conceptualizing the sacred.