The series "World of Subways" features some of the most interesting Subway Routes of the world for the PC. Once again World of Subways 4 comes back to New York, perhaps the most exciting city in the world. The whole gaming world takes place in the 70ies/80ies and is created in its typical look.
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