Click anywhere to fire! Press the left and right arrow keys to change the speed at which the ball is traveling at. It can get warped! If you shoot faster, you earn more points. Your actual score is the original score divided by the time taken to smash all the blocks.
I got this from "20 Games to Create With Scratch" by Max Wainewright. This can be really fun because it also has a physics engine, so it is more realistic.