Click space to start. Use W and S to control paddle one (paddle on the left) and the up and down arrow keys to control the other one. To score a point, try to deflect the ball at an angle to make it harder for the other player to deflect it. If the ball goes past the paddle on one side, the other side gets a point. The ball can touch the top and bottom.

I recreated the 1970s pong in Scratch.