You’ve never seen a 10th anniversary party like this one before! There’s only one way to properly celebrate a decade of crazy inventions – with even crazier inventions! This special anniversary DLC for Crazy Machines 2 includes 23 new parts and levels to add to your inventor’s toolkit!
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