The paddle goes along the mouse pointer. The ping-pong ball moves the slowest. The basketball's speed is in the middle. The baseball's speed is the fastest. Hitting the ping-pong ball one time, you get 1 mark. Hitting the basketball one time, you get 2 marks. Hitting the baseball one time, you get get 3 marks. Every time a ball hits the red line, 1 mark will be deducted. Happy playing! :)
Thanks to Scratch's tutorial