Use your mouse to control the paddle. Click to boost the ball's y velocity, or then the ball won't bounce. However, if you keep holding down your mouse, the bar at the bottom will go down and the boost power decreases. Yes, the ball can go inside the paddle and you get a lot of points and you end up losing when you move the paddle, but that happens for all Scratch Pong projects :/ Comment your scores! 100% Sean!