I just thought I could share this random engine that I made with you guys. Press up and down arrows to change the speed of the game, put cursor on the "Ball is with..." rectangle to... do something obvious.
The reason why it limits at 8 is because putting it at 9 makes it so fast that it looks like it doesn't move at all, 10 makes the cats go to the Shadow Realm, and going higher would slow them down because math.