If you haven't checked Phil Reed's work on this yet - do so. NOW.
Beautiful PDF - great graphic design. Very evocative of the subject.
Neat little game as well. Take at look at the free 24-hour version linked here at 1km1kt through the 24 hour game contest. Then consider going to buy the deluxe version and supplements from RPGnow. Trust me - they're worth it. Very nice for the price!