It could use a tutorial but this is probably the first time that I didn't care about the actual aim of the game because of how beautifully it looks and sounds. I could just run around in your little world forever and feel nice. It's really well done.
I think walking around and seeing the game is the whole point of the game. Not much traditional "game" in it. It's like Myst or Firewatch which are sometimes (derogatorily?) called "walking simulators"
