Everybody who looks for new challenges should try the New Adventures DLC. Five new scenarios are waiting for you, each one with unique task that will let you experience unseen and thrilling situations. So you will help the city of Corpus Christi in “The Ascension of Christi” to become rich and well-respected within a short time or you...
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