Great little game
I can give you a nice review now I know that your work is genuine :)
I really liked this game, it was great in it's simplicity. The graphics were perfect, I love your style. I think this wouldn't be as fun if you added much more to it like powerups, but there are some possible improvements. Maybe it could get faster over time? Otherwise it's possible to go on for ever which is something to avoid in a game.
The SFX are quite nice, but I think a bit more music would work well here. I know it would add to the file size, but something light could keep this under 500kb. I just think it would help the overall experience.
Other than those small things this is very good, perfect NG material, hope it gets Front Page! Keep submitting stuff ;)