After one year of work, The WarChiefs was released to sales in late 2006, enabling more than one million players to access several new civilizations, new maps, and a wide array of other advancements. Following the success of the base AoE 3 game that quickly became one of the best-selling PC games of 2005, the team quickly started production of its first expansion pack. Age of Empires III: The WarChiefs is the first expansion pack for the real-time strategy game Age of Empires III that was originally developed by Ensemble Studios and published by Microsoft Game Studios for PC in late 2005.
