Age of Empires III has made several innovations in the series, in particular with the addition of the 'Home City', which combines real-time strategy and role-playing features. There are fourteen civilizations to play within the game. The game portrays the European colonization of the Americas, between approximately 14 AD. Its successor, Age of Empires IV was released October 28, 2021, for Windows. A remaster titled Age of Empires III: Definitive Edition was released on October 15, 2020. It is the third game of the Age of Empires series and the sequel to Age of Empires II: The Age of Kings. An N-Gage version of the game developed by Glu Mobile was released on April 28, 2009. The PC version was released on October 18, 2005, in North America and November 4, 2005, in Europe, while the Mac version was released on November 21, 2006, in North America and September 29, 2006, in Europe. The Mac version was ported over and developed and published by Destineer's MacSoft.

Age of Empires III is a real-time strategy video game developed by Microsoft Corporation's Ensemble Studios and published by Microsoft Game Studios.