You can use the arrow keys too! I just forgot to update the controls info on the title screen.
I made the controls a little awkward on purpose so it would feel a little more challenging than vanilla pong. Otherwise I'd probably just have made each paddle move at the same time. I also considered making it so one paddle played with W/S and the other with up/down, but decided against it because I like making games playable with one hand when possible for accessibility reasons.
I tried playing with two hands just now and that was way harder for me haha, but tbf I've been testing it with one hand for the last 72 hours, so my brain is used to that now.
Thanks for playing!