I like this kind of order of operations puzzling. A little disappointed about the lack of sound, but that's the nature of game jams; you can only spend so much time on any one thing. I like the idea of stacking and controlling multiple square guys, and I kinda wish you developed it a little more, even at the expense of fewer levels.
I like it though! There's a lot of room to explore in this concept and I hope you find the chance to do just that.