oh, I must say it is looking very impressive.
Just curious did you do the artwork yourself of is it ripped from some other game?
We've done a lot of artwork ourselves. We have had a few different artists so the style isn't competently consistent. We had to start using artwork from http://opengameart.org/
and a few sources where we had an agreement with the author. We don't illegal rip art. Most of what you see in the screen shot was done by us.
edit: I think the only thing in those screen shots that is not by us is the tree.