Heck yeah, this is great! Super simple concept, yet original, difficult to play, well constructed. Beautiful. What a pleasantly difficult puzzle game. I love the idea of moving the boxes onto the tiles, and I could totally see games increasing in complexity where there could be boxes stacked on boxes that would add movements. (Such as if you had the regular box on a <-- but then added the jump box on top of it, then you can jump <--)
So cool! Obviously, we didn't have much time to make this, but the underpinnings of something great is here.
Well done!