This game is really cool! At first I was confused by the controls, but once I got to the second screen, I was like, "Oh. So that's why the keys were xkcd. Nice!"
This is a pretty clever game, and quite well designed. It's very simple, but takes the player up step by step through each level. My biggest complaint is the fact that . . . well, it ends! You do such a great job setting up the puzzle's controls, and then the game is over! It feels like you wanted to have more, but didn't have time.
I very much enjoyed this. It's well designed, feels good to play, has nice little xkcd strips as its backdrop--this game rocks. I'd love to see a longer, post-jam version of this; the game is so good that it almost demands to be expanded. Great job on this. :)