Age of Empires III is a real-time strategy video game developed by Microsoft Corporation's Ensemble Studios and published by Microsoft Game Studios. The Mac version was ported over and developed and published by Destineer's MacSoft. 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. An N-Gage version of the game developed by Glu Mobile was released on April 28, 2009. It is the third game of the Age of Empires series and the sequel to Age of Empires II: The Age of Kings.