There's a reason why Chad Underkoffler was tapped to write the setting material for the much anticipated Dresden Files RPG from Evil Hat: as S7S demonstrates, with his writing, you're sure to get something you haven't seen before. If you're a fan of Swashbuckling RPGs at all, pick this up. This isn't your typical "pirate" RPG, or even pulp "sky pirate" fare. The game takes place in a virtual "snow globe" of inter-layering skies, each it's own micro-environment of sorts. Plus, you've got vastly different cultures rife with intrigue.... In terms of the PDQ system, S7S is the best laid-out book so far; regrettably though, the appealing "under the hood" approach of ZoZ is absent. The PDQ system itself is the biggest selling point of the book. I am reluctant to run most OGL based games because of the number crunching and the sheer volume of rules to keep track of. PDQ has none of that. For specific information on the system, see the free PDQ Sharp! pdf. here on RPGNow.
[5 of 5 Stars!]