the player begins with control of one territory along the river, with two opponents - shown in green and blue, and led by other historical figures - controlling other territories. these areas of land can be captured by gaining control of the central grail stone - a mushroom shaped object in the centre of each. more people can be recruited by building houses, for which building material needs to be collected. towers can be built for defense purposes, barracks can be built to train soldiers, warehouses can be built to construct war machines, stores can be built to add building materials to stockpile, docks can be built to construct ships, workshops can be built to train people as engineers and scientists, and technology centres can be built in order to advance the civilisation.