Use the mouse to control the Purple circle. Press S to start. Press P to pulse. Press M for music. Press B to exchange a coin for a point and if your health is less than 100 it will give you a med kit. Touch the blue circle to gain points and health. Touch the pink circle to lose points and health. Touch the small blue circle to gain health. Touch the small pink circle to lose health. Touch the small green circle to get ten more seconds to play. Touch the small yellow circle to get a coin. The goal is to get the highest score. You can lose by getting -21 points, losing 100 health, or running out of time.