To move Ronaldo (left side) use the "q" key for up and the "a" key for down. To move Messi (right side) use the up arrow for up and the down arrow for down. First player to 4 goals wins.
When making this project I used the idea of two soccer players kicking the ball back and forth. I googled two images of two famous soccer players and used them as "paddles." Naturally they would be kicking a soccer ball back and forth which is why the ball sprite is a soccer ball. In soccer each point is a goal which is what i used here.