Age of Empires II has five story-based, single-player campaigns which focus on historical figures and their struggles to achieve greatness. Campaigns that revolve around William Wallace, Joan of Arc, Genghis Khan, Barbarossa, and Saladin will test all of your strategic skills as you strive onward to victory! Gamers command one of 13 mighty civilizations. These include the Franks, Japanese, Byzantines, Vikings, Mongols and Celts civilizations. Each civilization has unique attributes, buildings and technologies as well as a unique combat unit based on its historical counterpart. Players can improve the economy of their civilization through trade and diplomacy options. In addition to gathering resources, they can trade at their own market or use trading routes with their allies. A market-based economy gives new options for players to buy, sell, and speculate on resources.