This is Pong currently only a two player game. The arrow keys are for the person on the right and WASD is for the person on the left. You can use the button on the top right corner to change the angle of the ball in case it is too steep. Also, do not worry about the fact that the ball always keeps the same or corresponding angle, because I will change that soon.
I would like to thank 15A1AH for showing me that I can use a block that I did not know I could use. And of course the game "Pong" which I based this off of.