【實用遊戲app】Smartest State|最夯免費app-綠色工廠好玩App

iphone 5 support...compete against other players in your state and country ... and see how you rank in your state... topics range from physics to history...after each test you can see a graphs,charts and scores in order to see how you fit in your state and country.and also this game has game center so that you can compare your results with your friends and family.