The GM’s Day Sale is going on all now at DriveThruRPG/RPGNow, Paizo, and d20PFSRD. It gets even better than that. Today only! we are taking off an additional 60% off of the Book of the River Nations: Complete Player’s Reference to Kingdom Building at DriveThruRPG/RPGNow and d20PFSRD. To that means you can get the Book of the River Nations for about 75% off the regular price. But this offer is only good TODAY!. Grab it now.