Well, the other day we got a bit of a "review style" look at the rules for The Walking Dead: All Out War, the horror skirmish game of zombie fun from Mantic Games. For those that were disappointed that you didn't actually just get a rulebook to look over, you can breathe easy, as that's just what Mantic has made available.
In the Mantic webshop, they've posted the playtest rules for the game. Obviously, being a playtest version, and since the game is still in development and quite a while from release, these are subject to change and be added to. In fact, if you find something, there's a forum link to discuss what you think should be altered. Though you're getting 'em from the webshop, they are free. So you don't have to worry about cost.