Very nice, very relaxing. Also very nice to make it possible to try the game to check whether it works before paying for it.
Two suggestions if you don't mind for mouse play:
- allow to use the mouse buttons for speed up/slow down (left/middle?)
- don't reset the view direction unless the right button is released. so that one can glide high. look down, and admire without any big movement for a while
Thanks for the game,