Neat submission.
I think the core concept is good, it is quite satisfying seeing the balls roll into place when you successfully complete a puzzle.
Definitely hits the Game Jam Theme requirement!
For improvements, I think theres a glitch on the final level where the Red ball passes through the revolving object. I also found with the perspective it was a bit hard to tell whether my ball would fall and hit something or just miss it. Maybe add the option to rotate the camera angle a bit.
Overall, I had fun with your submission. Good job!