This is a 2 player ping pong game. The one on the left side uses W to move up and S to move down. The one on the right uses up arrow to move up and down arrow to move down. The number on the left stands for the points for the left ball. I put it upside down?
I followed this tutorial for my class. Tutorial: https://www.youtube.com/watch?v=sn6Q1GVBdKs