Left and right arrows control the Player 2's paddle (upper). Mouse controls Player 1's Paddle (lower). Win occurs when a player gets to 10 points.
Trying to get back into scratch again, first project I made in quite some time! It sometimes gets stuck in a paddle, if that happens move your paddle away from the ball. It occurs because the paddle is larger than it probably should be. Working on a derivative calculator as well at the current time.