It is the first puzzle game I have played for this gamejam, so I was happy to test it. I think you should make a tutorial or add more indications at the beginning to help the player to understand what he has to do. Sometimes, it was difficult to resolve the enigma because of collision with the cube but your main concept with cube it is very interesting. I would have liked there is more links with the theme (in game and not only in the story) but the game is fun !

Cool puzzle idea! I'd have loved to get some kind of tutorial - but with a little bit of fiddeling I found out the puzzle mechanic myself :) . Unfortunately colliding with the stones while pressing space can make the duck fly up and break the level.