The screen's too small.
For the speed they move, the screen is too small. If you make the screen bigger, so you can see the enemies coming, then it would be more fun. As it is, it's just not fun. Also, add a REPLAY that will get us back into the action faster. I don't want to scroll thru the menus to get back to the same exact place. Can you remove the 'shine' in the upper corner? It's a cool detail, but it's too strong and makes things hard to see. Great detail and animation in the actual game. Just a few things that cut into the fun.