The Civilizations of Age of Empires III do not function the same way as they do in Age of Empires and Age of Empires II. Instead of having a large list of numerous civilizations, the choices are much more limited. In addition, each civilization can be played by only one player.
Age of Empires III Civilizations
Civilization Bonus: Villagers and infantry are trained in groups, low cost military great for overwhelming other players with their large armies, can build Blockhouses
Unique Units: Strelet, Cossack, Oprichnik
Home City: St. Petersburg
Civilization Bonus: Free Uhlans arrive with every Home City Shipment, there are two kinds of settlers, more mercenary cards available.
Unique Units: Uhlan, Settler Wagon, Doppelsoldner, War Wagon
Home City: Berlin
Civilization Bonus: Town Centers spawn villagers at no cost and they also have strongest Artillery unit in the game, Great Bombard
Unique Units: Abus Gun, Janissary, Spahi, Galley, Great Bombard
Home City: Istanbul
War Chiefs Expansion
War Chief Bonus: Boosts hitpoints of nearby units. The Iroquois have Travois that the Iroquois start with in the beginning of the game and can build most buildings for free. The Iroquois also have a unique Founder Dance in the fire pit which spawns Travois.
War Chief Bonus: Boosts speed of nearby units, start with 200 population slots automatically. Have unique Teepees, which you can only build up to 10 (exception when card sent) to provide a little health bonus to nearby, friendly units.
War Chief Bonus: Doubles experience gained in combat by nearby units, have warrior priests that can heal or count as 2 people at the firepit. Start with one Warrior Priest. Except ordinary War Hut, Noble's Hut also acts as a blockhouse, but with a longer range.
Asian Dynasties Expansion
Civilization Bonus: This civilization can build villages that support more population than houses, and has migration cards that allow them to spawn one villager at each town center and village. Trains infantry and cavalry in groups. Only get one monk at the start of the game, along with a disciple.
Unique Units: Chu-ko-nu, Steppe Riders, Flamethrower, Flying Crow, Hand Mortar,
Home City: Beijing
Civilization Bonus: This civilization can build Sacred Fields to increase livestock XP. There are no villager cards, but they receive one villager with each shipment All villagers that are not shipped from the Home City cost wood instead of food.
Unique Units: Mahout Lancer, Sowar, Zamburak, Howdah, War Elephant
Home City: Delhi
Civilization Bonus: This civilization does not hunt animals for food. Instead, shrines can act as houses and can be set to produce any resources when built close to animals for bonus production. Japanese may also build cherry orchards, which are built from freely-obtained Rickshaws. As a special advantage, most cards in the Japanese Home City may be sent twice.
Unique Units: Hatamoto Samurai, Daimyo, Flaming Arrow Artillery
Home City: Edo
Napoleonic Era Expansion
The project has been kept on hold due to Ensemble Studios closing after the release of Halo Wars.