XIII Century Gold Edition combines the highly successful strategy game XIII Century: Death or Glory with the follow-up sequel, XIII Century: Blood of Europe.XIII Century: Death or Glory is an RTS game which immerses players in the Middle Ages.
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