A revolutionary new self-help book by top flight game designer Jane McGonigal. After suffering a brain injury, Jane McGonigal came up with a game to help aid her recovery and battle the ensuing depression she experienced. Half a million people have now played this game to astonishing results: depression gone in 6 weeks in some cases and even terminal cancer patients reporting that playing the game gives them a sense of control over their own health. The book shows readers how to use these...