When you click the green flag, you will start a timer that counts down from 30 seconds. You'll be presented with math problems. Your correct and incorrect answers will be tracked. You'll hear pleasant music when you're correct, and sad music when you're incorrect. At the end of the game, if you have more correct answers than incorrect answers, you'll hear a choir sing. The backdrop is an invisible picture of the most beautiful place you'll ever see. I spent a lot of time on that; I hope you like it.