There is a number inside a circle, and you control that circle. Circles with different numbers appear on the screen. You need to move your circle and collect circles with a smaller number to earn points, while avoiding collisions with other circles. Note that every time you absorb another circle, your number changes. So you always need to keep track of your number. The game gradually gets harder and harder — the number of circles appearing on the screen and their movement speed will increase with each level.