The latest official patches developed by Robot Entertainment (founded by some of the ex-Ensemble staff after its closure) also removed the SmarteSECURE DRM, leaving only a serial key requirement. Age of Empires III is a singleplayer and multiplayer bird's-eye view RTS game in the Age of Empires series.Īfter its release, the game received The War Chiefs expansion in October 2006 and The Asian Dynasties in October 2007 (the latter by Big Huge Games), with new civilizations, campaigns and mechanics.