This is everything gaming should be.
I'm honestly blown away and after an hour am still discovering things I can interact with in surreal ways. The music is the best I've heard in this medium in -years- and reminds me alot of the recent Le Révélateur (youtube him)and of Boards of Canada and the fact that it evolves to the pace of your journey just makes it all the more incredible. If you enjoyed non-games like Dear Esther or Thirty Flights of Loving then this deserves your utmost attention for doing what others don't and thinking outside of the box to create a game that stands out from the droves of generic indie releases. The whole game invokes some kind of mystical sense of wonder and nostalgia.
If you're looking for a unique experience, check out Proteus right away.