Instead of you playing the game, the game plays YOU. And you'll be surprised at what you will learn (and retain) in the process.
Just type your invite code into the App to start your experience. Try out a Live Demo and some Sample Questions while you wait for the fun to begin.
(notice: Challenges with prizes are identified with a link at the bottom of the Challenge Description Page. Not all Challenges award prizes; specific rules, when applicable, are provided inside of each Challenge).