Click on the applet to start, then move the bar left and right with the cursor keys to keep the ball from hitting the ground.
Restart Level 1 is fairly easy. When you get to 2500, you advance to level 2, which is tougher. At 10,000 points, you move on to level 3, which is hard, and at 25,000 points you move to level 4, which is extremely difficult. In level 4, you only score points if the ball hits the target going across the top of the screen, and you must do this 10 times to go on to level 5. Level 5 is sort of a bonus level when you get to 50,000, and the ball will have a random speed and direction every time you hit it. To skip to a level, after you click the applet to start, type '*' and the number of the level to skip to ('*2' would start you at level 2). You get 100 points for hitting the ball in level 1, 200 in level 2, 500 in level 3, 2500 for hitting the target in level 4, and 1000 for hitting the ball in level 5.