Ah cool! Once I got what I was doing these were some cool puzzles real headscratchers that make you feel super smart when you get them and well, how I usually feel when I don't. I think a really simple tutorial first level could have gone far if you had the time but, hey, if I can crack it through brute force I'm sure others will work it out much sooner on there own. I also like that you didn't give the player an option to pick things up, it added a little unexpected humor when those dang boxes wouldn't behave as intended. Great job this was a good'en!