There's a line and a ball, and you are responsible for both of them. As you begin the game, look for the ball. You need to get it to the target at the end of the game. The dotted line in the level represents gravity and how it will pull your ball. You need to click and drag your mouse to draw a line that will bring the ball to the goal. You can have as much of a line as you want, but you get more points for drawing less. Try to figure out how the ball will roll on its own, and draw only what you need to in order to help it along to the goal.