Interesting concept. I couldn't get some of the puzzles to work though because the physics seem a bit funky.
Out of interest, which levels couldn’t you beat?
The teeter totter in level 2 didn't really work that well once I put the box on it, and I think in either 3 or 4 (don't quite remember), one of the boxes just got stuck and I couldn't get past it with the giraffe
