This will be the fifth expansion for the grand strategy game, adding depth to the Aztec, Mesoamerican and Incan cultures. Additionally, there is a new Nation Designer, allowing players to create custom challengers anywhere in the world.
Lastly, a new system which automates sea and land exploration has been implemented.
Be sure to check out IGN's review of the base game, which is "easy to recommend to anyone interested in historical strategy".