The new expansion pack will build off of the exciting real-time-strategy (RTS) gameplay of "Age of Empires III," providing players with the ability to lead one of three proud Native American civilizations including the Iroquois Confederation, the Sioux Nation and the Aztec Empire. "Age of Empires III: The WarChiefs" will include enhanced gameplay features with the addition of the WarChief unit, Tribal Council and Fire Pit.

Players will also enjoy new ways to play and win with the introduction of new gameplay elements and content including new civilizations, a new gripping single player campaign, Home City enhancements and additional maps and units. Additional content will be added to all existing European civilizations along with extended gameplay elements with new gaming strategies such as Trade Monopoly and Revolution.

Caesar IV features:
- Build your Rome: More than 100 awe-inspiring structures are available to build in any imaginable combination
- Expanded Economic Control: With over 25 tradable goods, 10 industries, 4 markets and foreign trade routes, the economic possibilities are vast
- Leading Edge Graphics: High dynamic range lighting, specular & bump mapping, along with realistic weather effects and a complete day / night cycle bring Rome to life in never-before-seen detail
- Experience Life in Ancient Rome: Interact with more than 75 unique characters within your city
- Improved Combat Functionality: Take direct control over your legions - who gain experience through combat and training - as you ward off barbaric invasions
- Over 100 Hours of Gameplay: Career mode, standalone competitive scenarios, and sandbox mode offer variety and replayability