 At the start of the game, the player is asked how many castles they wish to construct (3, 5 or 8), thus dictating the length of the entire campaign.Castles are constructed one after another, and each scenario is more difficult than the last, in terms of available resources and money, the size and variety of enemy troops, as well as the difficulty in maintaining good relations with all the different factions (friendly or otherwise).To win a scenario, the player needs to have at least one complete circuit of segments fully constructed, exceeding a specific quota of castle "pieces" as dictated by the scenario requirements (which increases with each scenario).