Arrow keys to move black bar. Up arrow to launch ball. Try to hit all boxes 3 times. The green bars are power ups.Possible power ups: gun, tri-ball, extra life,tracking bar, speed. (0 lives = lose) 10 second limit for keeping it on your pad after dying, otherwise the ball will launch itself. Maximum lives is 4.
Idea from an iPad game. Sorry, I can't remember the name.