Hello,
do i get it right - You only need the graphic part, right?
If You need programming, etc, then please ignore my bid.
I am an illustrator working mostly with raster graphics (but sometimes i do vector aswell). I'm very fond of games and i'm into fantasy and sci-fi themes, so Your project sounds like lots of fun and i'd love to work on it.
Feel free to take a look at my portfolio here, on my freelancer profile and contact me if interested.
Cheers,
Ronaldas