I call it a stand-alone d20 game because it works more or less on its own (with the Player's Handbook, of course). It's more than just a campaign setting, since Chris Pramas rejigged the class system and added different options to combat to make cover more important, for example. Character creation works differently than in d20 Modern. Dogface's development actually came at the same time WotC was putting together d20 Modern, so it's been interesting to see how different designers tackled the same issues.
I think it's pretty sweet. Definitely more of a "Saving Private Ryan" feel than a "Nick Fury and His Howling Commandos" feel, but Chris did include a few "Hollywood" options for those of you who want to keep the bullets flying fast and furious without the fear of taking a bullet in the eyeball every time you peek over a fence.
--Erik Mona
I think it's pretty sweet. Definitely more of a "Saving Private Ryan" feel than a "Nick Fury and His Howling Commandos" feel, but Chris did include a few "Hollywood" options for those of you who want to keep the bullets flying fast and furious without the fear of taking a bullet in the eyeball every time you peek over a fence.
--Erik Mona