GameSpot has gotten word that Big Huge Games is working on an expansion pack for Rise of Nations, called Throne and Patriots. 'Rise of Nations: Throne and Patriots' will include six more new playable nations to the original game's total of 18, along with more than 20 new units, and new features, like the expansion's new campaigns and its government system. The government system will let each nation in the game determine for itself how it will be governed--a decision that will affect its development over the course of history. The new campaigns will include scenarios based on real-world historical engagements.