It is WASD and arrow keys, and the aim of the game is to keep the ball bouncing, there are still lots of bugs, like the ball goes through the paddle, but I wanted to post it lol.
It is the same code as my brick breaker, you should look at it here -> https://scratch.mit.edu/projects/691756515/ Check out my friends channels -EpicBeanGamer101 -Anfoo -micklepickle2009