 Age of Empires III has sold over 2 million copies as of May 2008 . As well as receiving favorable reviews , it has garnered awards , including GameSpy 's " Best RTS game of 2005 " , and was one of the best @-@ selling games of 2005 . In 2007 , Age of Empires III was the seventh best @-@ selling computer game , with over 313 @,@ 000 copies sold that year . 
