I enjoyed the different areas with their different sounds and the experience of looking for crystals. Charming!

Really pretty, I loved the visuals and sounds for the crystals

Now that was trippy! Very nice shaders and particle effects, I especially loved the slowdown when you pick up a crystal.

The gameplay is a bit too simple, but maybe adding some narrative or a story would spice it up (eg. like in Dear Esther, which is basically just about exploring a very nice looking environment and listening to a story in parts).

The world is very pretty and the music is relaxing!

I liked the mix of realistic nature terrain textures with the surreal sky and reflective surfaces. 

I didn't find that the music adapted however, other than switching which loop was playing based on the quadrant I was currently in. Maybe I was missing a secret.