The goal of this game is to shoot the ball into the basket. To shoot you have to leftclick inside the ball and drag the mouse. You will see a line from the middle of the ball to the mouse pointer. When you leave the mouse button, the ball will start moving in the direction of the line. The length of the line indicates the starting velocity. The ball bounces back from the left, the right and the bottom wall and from the ring of the basket. There is no ceiling. When you manage to shoot the ball into the basket, the ball stays there. Click somewhere inside the applet to go on. Your browser don't support Java, so see this screenshot at least: