The Time of the Mudd Kings is ending. A glorious history of a thousand years, a hundred battles and dozens of ancestors... is done for. In the shadow of the greatest castle in Westeros, the Oldstones the Hammer of Justice, the last King of the First Men in the South is about to meet his end a stones throw from his mighty home.
Kings of Rivers and Hills is a private campaign where players take control of a House of their own making. You can create your House using the excellent custom rules by Gamer Gig that can be found here. First Man Houses can be up to 'Very Old' in age, Andals are restricted to maximum of Established... but will have much more backing from their conquering Kin. Obviously for purposes of the campaign all houses must have their holdings in the Riverlands, though for Andals the rules for free companies are available to represent their migration to Westeros.