Like this game, and the atmosphere too.
For information 1 text is mirrored (in the map screen, on the line between Sqr and Big) not sure i it was intended but though it worts to be mentioned :)
Interesting. Some point that may need your attention.
Key binding change would be nice for players with azerty keyboard.
And some explanation why the princess move and how to stop her (if it is possible) because I did not understand the point.
There was one time (on the puzzle of the key) when the snap prevented me from finishing th puzzle.
Otherwise, this is a good option but that make the game too easy.
Instead of th snap i would have prefered if i could to freely choose which piece i want to block, by (double clicking it maybe).
Same comments than the 3 first, need a restart button, message on level 2 is on first plan and level 3 dont work 2/5 (because the idea was good, but too much problems on this game)