Absolutely fantastic entry.
Beautiful visuals, easy to understand controls, great illustration of the "hidden" state when you're near a tree. The difficulty from what I've seen so far has been quite well balanced. I also really enjoy the story and how simple choices can affect it. And the music... it's just lovely.
This is one that I'll come back to; it deserves a lot more than just a few minutes of play.
I usually try to give constructive feedback on these entries but I have no notes for this entry. Congratulations to you three on your great work!