Two expansion packs have been released: the first, Age of Empires III: The WarChiefs, was released on October 17, 2006, and introduced three Native American civilizations; the second, Age of Empires III: The Asian Dynasties, was released on October 23, 2007, and included three Asian civilizations.
Dua seri ekspansi telah dirilis: yang pertama, Age of Empires III: The WarChiefs, dirilis pada 17 October 2006, dan memperkenalkan 3 peradaban Pribumi Amerika; yang kedua, Age of Empires III: The Asian Dynasties, dirilis pada 23 October 2007, dan memperkenalkan 3 peradaban Asia.