Nicely done, a mesmerizing experience! A little unsettling at first. I think it's mainly the fog and not knowing what's coming, though I think the heavy fog probably adds to the experience overall, because you focus more on the sounds when you can't see anything. One nit is not being able to do a full loop since the mouse only goes fully around in a vertical direction, like FPS controls. I wonder if you tried flight controls? Anyway, good stuff!