Fantastic submission! It's a really clever take on the theme that works very well. There were a few points when pushing a 4x block into a portal it wouldn't go all the way through (it looked like because there was a wall behind the portal), but not a big issue at all. For some of the later puzzles, solving them was fun, but actually implementing the solution often took a bit longer than I was expecting. Probably my favorite game of the jam so far. Thanks for making it!