A couple suggestions...
The game was overall okay, nice soundtrack, ability to change music, etc. But, I had a few problems... first, the mouse, being a small dot, was hard to see when navigating the menu and on certain background colours (I went to level 2 and lost the mouse). Also, you might want to add an option (I don't know if Flash can do this) to adjust mouse sensitivity, as many times it seemed to go way faster than I wanted it to. A decent time-waster for a little while, but honestly I got frustrated with the mouse control.