Wow, what an amazing game. I love the idea. It is really strategic. I reached Level 14, but got stuck and since in my time zone it is beyond midnight and I have to work tomorrow, I have to stop.
For all other players: Watch the "How to play" first!
This game has atmospheric music, nice graphic, a good tutorial, at least 14 levels and an increasing difficulty.
I really enjoyed the playing. Good luck!
Edit: I came back and now I am stuck in level 15. So at least some progression :D
I read now till the very end, but I really enjoy to solve this the real way. While I was tired last time, I am really stuck. But I plan to come back eventually.