I would have to say, there's another thing I would like you to do with the game. I would like for you to have more simple animations, it would really add a more polished looked to a brilliant looking game.
Without optional upgrades and a limit to how far you can upgrade, it gets a little boring.... at level 5 I was about to fall asleep..... anyway, it's still nice 3/5.
I think it was very thoughtful, anyone who flagged this either doesn't get the message, or just trying to be ignorant.
Or they are just girls..... Sorry. Anyway, 4/5.