Yes, it's the game literally... SOME of you asked for! And so, in the spirit of "well, alright then, if you insist..." we present the third game in the Carmageddon series, in the knowledge that some of you Carma fans out there would like to have a complete Carmageddon collection in your Steam library. Nothing wrong with that.
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