I love the concept of this game and its execution! I like just how many different things the number influenced, and I especially like the twist on how pushable blocks behave at "0" (although no levels currently require you to use that twist). One thing I would have liked to see more is the puzzle aspect of the game, with levels that would require you to think longer about what the level wants you to do.
I'm a bit confused by level 11, since some blocks seem to have multiple associated numbers, but there were no other levels like that. (Although it was a neat idea to also hide the player's number, but there's still a way to tell what it is by paying attention to the spikes.)