Basically you start off with a ball bouncing in a large box. You are given a timeframe and have to cut off so much of the box, by drawing lines. So, of 100%, you have to cut off 50% of the box, however you see fit. You draw a line, when the line reaches the other side, you cut off a portion of the box and are closer to your goal. If the ball hits the line, you lose that line and have to redraw that line. Also, each higher level has smaller screens and more balls that move faster. I can't remember what this game is called....