 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 <unk> 's MacSoft Games . 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 . 
