Wow! So far, this is my pick for the best game of the jam!
It was often frustrating and occasionally too difficult to stack the boxes correctly. I attempted to complete it without using the help cube, but when I accidentally reset what I think was the last tower... (just as I was stacking all the boxes on the right-side I had to drop it.
The game is very polished, adorable, and the story integrates seamlessly with the gameplay. My only critique is that it overstays its welcome.