Multiplayer consists of online and network play with up to 8 people simultaneously. Japan and Korea are added in the Art of Conquest expansion and belong in the "Digital Age to Space Age" group. From the Atomic Age to Modern times France, Germany, Great Britain, Italy, Russia, and the United States are playable, and from Digital Age to Space Age China, Novaya Russia, and Rebel Forces are playable.
From the Middle Ages to the Industrial Age Austria, England, Franks, Kingdom of Italy, Ottoman Empire, and Spain are available. From the Prehistoric to Dark Ages, the civilizations are Ancient Greece, Assyrian Empire, Babylon, Byzantine Rome, Carthage, and the Kingdom of Israel. With the exception of the futuristic Novaya Russia and Rebel Forces, all civilizations in Empire Earth are based upon history. Epoch advancement requires additional buildings to be built and the costs of advancing increases as more epochs are attained, although the ability to gather the required resources greatly increases as well. Each epoch brings new technologies and units. Each of these epochs represents an age within history. Empire Earth has a map editor included.Įpochs are the ages a player passes through in Empire Earth. Finally, the player has the option of creating their own civilization with unique bonuses. There are two types of heroes, Strategist heroes who heal surrounding units and can demoralize enemy units while Warrior heroes give morale to surrounding units and have a greater attack power. Heroes can be built at the town center or capital. The game itself contains many unique and innovative features, including a "morale" system, which directly affects individual units statistics. Empire Earth uses 3D graphics instead of sprites like Age of Empires II, the comparable game at the time.
Empire Earth is similar to the Age of Empires series in that it is a history-based real-time Strategy Game.