Great game, it was fun and really pretty. The style of the cardboard cut out trees was great. with the music and sounds it almost felt horror like. The feel and visuals of the game were top notch IMO especially for a game jam. I still have not played the hard version yet, but I definitely will.
For feedback though I would say that I really did not feel the theme come through until I read the description, but the even then the theme did not feel like it was a core part of the game but just a level design restriction, as in if you made the game a full thing you would probably ditch the theme all together (but that is honestly not a bad thing or even a complaint)
For the game play which was fun and built up good tension for me I did find that by the nature of the game play and maps I would just skip multiple turns in a row waiting for the ball to move, maybe there is too much hiding places that are too safe? I do not know.
FANTASTIC entry over all and one of my favorites.