The mean cruel cold blooded tyrant Ceville ruthlessly rules the beautiful kingdom of Faeryanis. Or rather, he used to rule the beautiful kingdom of Faeryanis, until the brave people revolted against his regime and drove him out of the palace.
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