Click the number corresponding to what difficulty level you want. Hit spacebar to restart when you die. Every time the red dot touches the middle dot, hit the spacebar again. Try to hit it as many times as you can before the time runs out. The time is displayed up on the top. It will continually decrease. Every time you hit the middle, you gain more time; every time you miss the middle, you lose time. The circle will move faster every time you correctly hit the middle. The middle will sometimes disappear. Good luck and Happy Coding! Credits: All me, except for music, which is from The Legend of Zelda: