Clever puzzle game, but I can't really say it fits the theme at all.
There is a bug where if you just hold down movement keys, the boxes will glitch out and leave the level; I could not understand what I had to do with the floating boxes that could go everywhere. Once I restarted and just did single presses; it clicked and I got to play a few levels. If you fix the collision detection, you might not confuse people on the first try.