Games are a distinctive art form. A game isn’t merely a designed environment. A game tells its players what abilities to use and what goals to pursue. A game, in other words, specifies a form of agency. This chapter proposes that games are the art form that works in the medium of agency. And to play a game, players temporarily submerge themselves in an alternate agency. This chapter focuses on what we learn, from the fact that we play games, about our motivational capacities. In many kinds of game playing, we are not playing to win. We are, instead, taking on a temporary interest in winning, for the sake of the struggle. Game playing is a motivational inversion of ordinary practical life. And we are beings that can invert our motivations, and take on temporary and disposable ends, for the sake of having a valuable struggle.