A simply boring game
This game has been done many times before, it's nothing new, and this one bring nothing new along with it, so this game really has zero replay value. The whole "eat smaller objects, but don't let bigger objects get you" has been done where you then grow from eating up all the little ones, but without that, it seems a bit boring. I found myself wanting to stop playing before I even finished the first level, which is not how you want a gamer to feel.
Aside from a being a boring game, the circles were impossible to determine if they were enemies or not. Some looked like powerups, and that's very misleading.
The graphics did not match each other, it looked like some you made yourself, and somewere made somewhere else, so it didn't even really flow together all too well.
I really don't see why people are saying "this could be a great game with a little fixing", there already are tons of game like this. Make something new and interesting.