This was a pretty fun game, though I have a few suggestions: how about adding feedback for the Submit Score button, so you can see if the score has been submitted? How about adding a score bonus for each level you complete? How about adding some form of transition when you loose, and maybe info on which level you reached as well? Also, after level 5 the difficulty level really skyrockets! Maybe it's completable with practice, but my first impression is it's too hard. Nice game otherwise, simple; fun. Keep it going!
-cd-