The Scrambled Continents map pack includes real geographic locations with special scripts that produce randomized interiors each time a new game begins. While the familiar outline of the continent’s geography stays constant, the inner heart of the world changes each time you play for endless replayability on countless plausible worlds.
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