Build And Operate The Railroad Of Your Dreams....With Your Friends!Trainz Simulator 12, Now With MultiplayerTS12 includes the most exciting new feature in the history of Trainz. The players have asked for it and we have delivered Trainz Multiplayer. Now players from all over the world can build, play and operate railroads together!
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