Nice style, rendering & concept! :)
In terms of game play, I find it kind of fastidious to stack all those bodies in the right place. A slow process, too long for my taste.
+Get one wrong and it can block the way (I didn't find any restart, Escape > Exit didnt work. (But those are generally ultimate details, to be included later (?)))
I would prefer taking my time to concentrate on placing a few (2-3) bigger bodies in the right spot, or just lower platforms... or maybe have the possibility to move/push the bodies?
Original concepts like these don't come around often, I hope you continue working on it! GL! :)