That's a real cool little puzzle game. I like the whole style and the level design.
Wish there would have been a few more levels. Felt as soon as i got all mechanics (which you perfectly introduced step-by-step) there was only one level, to really solve something. Also could have been a bit more difficult.
One little thing to improve maybe: For my taste, the texts disappeared always a bit too soon.
But all in all for the 7 days, that is a real well polished, short but fun games, with a nice background story. Great job of both of you!