Although civilization blossomed later in the western hemisphere, the region from Peru in the south to Mexico in the north was just as important as an incubator for the development of ancient cultures. This map spans this rugged area of jungles and highlands.
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam