What you have to do is simple when a purple arrow hits a black arrow you have 2 seconds to press an arrow key. The arrow key you press is pointing in the direction of the purple arrow touching the black one. No cheating or having your hands close to the arrow keys this game is meant to test your reflexes in your hand when the game stops look at your score cause the higher your score the better your hand reflexes are. SO DO NOT CHEAT OR ELSE YOUR SCORE DOES NOT MAKE YOUR HAND REFLEXES BETTER CAUSE YOU CHEATED! THe more you play this the better your hand reflexes will get. But that is just a theory, and have fun!