"Empire Earth II" contains three single-player campaigns, a collection of scenarios called "turning points" and a tutorial campaign. The tutorial campaign features the Aztecs, featuring four scenarios to allow players to learn the gameplay. The first scenario is about the founding of the city of Tenochtitlan, followed by a scenario about the Spanish conquest of Mexico, which ends with the Aztecs driving out Hernán Cortés and his Conquistadors. These scenarios are followed by ones about an Aztec alliance with the United States and a war with the Incas, occurring before World War II.