"McGonigal is a clear, methodical writer, and her ideas are well argued. Assertions are backed by countless psychological studies." --The Boston Globe "Powerful and provocative . . . McGonigal makes a persuasive case that games have a lot to teach us about how to make our lives, and the world, better." --San Jose Mercury News "Jane McGonigal's insights have the elegant, compact, deadly simplicity of plutonium,...