bonus tracks. Unlike previous versions of Age of Empires, the AI nations in single player skirmish mode will send voice messages to the player at various points in the game, taunting the player if they are selected as enemies or sharing military plans with the player if they are allies. All the AI characters have different personalities and many different quotes exist in the game. The feature can be easily removed if required. Release history Following the announcement of the game on January 4, 2005, a trial version was released on September 7, 2005. This contained a cut-down version of the game, introducing new features, such as two campaign scenarios, two random map scenarios (New England and Texas) and access to two civilizations (British and Spanish), and a variety of modifications. An updated demo version was made available with the game's release on September 22, 2005. As part of Age of Empires III launch, Ensemble Studios announced the release of Age of Empires III Fan Site Kit on September 9, 2005. The release of the game on September 22, 2005, saw two separate editions being made available. The standard edition included the game and manual, a collector's edition version in a presentation box that includes the official soundtrack, extra documentation, a hardback book titled Art of Empires that contains concept art and 3D renders from the game and a DVD entitled The Making of Age of Empires III. The release of the game has been followed by a series of patches that have fixed minor bugs in the software or added new features. Ensemble Studios released an expansion for the game named Age of Empires III: The WarChiefs on October 17, 2006. It contains three new native civilizations that can be completely controlled: the Aztecs, Iroquois, and Sioux. New content for existing European civilizations, maps and gameplay additions (such as the "revolution" feature, in which players can "revolt" from their mother country and start an active military coup in the game) was added. A second expansion pack, Age of Empires III: The Asian Dynasties, was announced on May 18, 2007, and features three Asian civilizations: the Chinese, Indians, and Japanese. It was released on October 23, 2007. A Mac OS X port of the game was released on November 13, 2006, by MacSoft, followed by the first expansion on June 18, 2007. In 2009, when Ensemble Studios was closed and