I'm speechless! Almost ;) This is splendid! I finished it. I love how it made me feel smart and dumb at the same time. Really clever puzzle design, very good use of introduced mechanics, the look and sound are pleasing and consistent. And it has a story, too! And a good one! Perfect time span - I started feeling tired just before the end. What you might consider adding: undo, persistent storage of completed levels, and maybe a little happier ending? Anyway, this game deserves a lot more visibility! I enjoyed it immensely. 5/5