I don't really play a lot of zen games but I like what I see here quite. Some quite good takeaways I feel from this game are:
1) Very great mood here - and this is a loose term to encompass the graphics, music, style and gameplay altogether. I think you achieved a mysterious vibe that goes well with the story you were going for. Especially under 3 hours. Very nice!
I ended the game quite quickly because the gameplay didn't captivate me too much as I hoped it would but you definitely got good mood here. Kudos!