Included in the Platinum Edition are three titles:SpellForce: The Order of DawnIn a world beyond imagination...In their immeasurable greed and constant thirst for power, the thirteen most powerful Mages of all time doomed the land, hurling it into an endless spiral of chaos and despair.
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