The visuals were top notch, I really liked the art style! The minigame is very confusing without any sort of guidance, even though I think no guidance fits this art style a lot better. It can be hard to get the ball rolling again when it stops.
Overall I think it is a really cool game with a great atmosphere, just that the minigame could use a little more refinement. I think making some sort of way to get the ball moving again easier would be better than adding controls on the screen since it fits the art/atmosphere better to not have controls on the screen.