I like the game concept; it's very similar to the likes of monkey ball or that old hamster ball PC game. I had a lot of fun solving the puzzles and the lever/switch animation is cool. Controls are a bit slippery though but I'm not sure if that's intentional or not. I understand the limited time of the game jam and the lack of dev manpower but an in-game controls page and level select screen would make the game better.
As for bugs, I've had a moment where the ball clipped into the elevator but I guess that's just a rare occurrence. It's also pretty easy for the player to jump into the out-of-bounds zone.