When it comes to medieval real-time strategy, Lords of the Realm III flies the flag high. Whether it's maneuvering troops on the battlefield, negotiating trade and alliances, or overseeing armies across the lands, RTS fans will find plenty here to enjoy.
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