Shake your hand over the button to choose which mode to play. The motion behind the black sensors in the corners move the paddles up and down. It's best to stay out of frame and use only your hand to trigger the sensors. Change the speed of the ball and paddles by moving the sliders when you pick a mode.
Changes the ball bounce angle a little bit. Added speed sliders. Thanks to the user snilloc2 for his script that helped a lot