Once upon a time The Earth was green and beautiful. It was entrusted to humans to use it wisely together with all living things. Over time humans developed advanced technology using up the Earth’s natural resources. Humans lost their connection with the Earth.
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