2K Games published the pre-order bonus introduce video for the upcoming Civilization 6 PC game. In the video you can see the bonus nation the Aztec Civilization which will be available for free for the pre-ordered version games.
If you can’t pre-order the game don’t worry. After the release of the game (2016 October 21) you can unlock the Aztec Civilization packages in 90 days! (but this 90 days also true for the pre-ordered versions). Check out the video above and stay tuned for more information.