Why are games, which can be taxing, frustrating, and an awful lot like work, so much fun while our jobs, well . . . suck? Why do kids hate homework that’s repetitive and incredibly hard but they’ll gleefully run away from homework to play games . . . which are repetitive and incredibly hard? Why are puzzles fun but doing your taxes is awful? What is it that makes something a game and not just a frustrating pain in the ass?