Left and right to use flippers. Hold space to launch. You get 1 point for hitting the bottom circle, and 2 for hitting the top. Hitting the grey arc at the top of the table raises your multiplier. The small number next to the multiplier is the time left before it lowers.
This bug got fixed, so the game is playable now! http://scratch.mit.edu/discuss/topic/33947 Credit to amcerbu for the original. My best score is 10,580,000 in 18:33. Version 1.2.4: + Multiplier bonus if you get an extra life at ten lives. + Displays "K" instead of "000" after 10 million points. (10580K instead of 10580000, etc.) + Score now flinches upon death. Credit to sircoops652 for the music.