Your game has a nice mood indeed, but it gets boring rather fast. Some asteroids to dodge would have been nice.
I also think active movement costs too much fuel: just hanging in the middle without doing anything is a valid tactic that seems able to hold out forever.
The starts look a bit like falling snow because they all start at the same speed and accelerate. Try stars at different, constant speeds.
Very good game, even on windows. It sucks that you can't be rated in other categories but your mood was definitely excellent so at least you did good there. Very and little addicting.
Good game ! A Shame you don't want t be rated on the gameplay. It's not revolutionnary but it's nice.
The mood is clearly you strong point. The little stars passign by, the cool ambiant music. Good job !