I love the story that explains the gameplay loop. the 2dimension-theme feels a little tacked on, but whatever, you know. it's a pretty cool game. dying on collision with the outer walls seemed extremely punishing to me, but I can respect that.
One thing though: if you use Assets that other people worked hard on and give away for free, please actually credit them with at least their name and why not a link as well. credit where credit is due and so on.