Heh, this was funny. I kinda wish you had leaned even more into it and started to add more and more horrifific things to the other side as the game progressed to make the effect last longer, but it was still a neat little surprise when I first discovered the other side.
Gameplay was also neat, but I felt like something was off with the physics? Like, unless you take spin into account, the emergent angle should never be larger than the incident angle, right? Or do I have an error in my thinking? Also, sandpits are very hard to see, even on the other side.
Otherwise, pretty neat game! Shrinking the ball as it goes into the hole is a nice touch.