: If you purchased a boxed version (CD/DVD), the key is typically printed on a sticker inside the case or on the back of the manual. Euro Truck Simulator 2 How to Activate Your Key There are two main ways to use your product key: On Steam (Recommended) Open the Steam client and go to
Update 1.35 introduced significant content that makes a valid key worth the investment: Product Key For Euro Truck Simulator 2 Version 1.35.1.31
Providing or using unauthorized product keys can violate software terms of service. It's best to use official channels for software purchases. : If you purchased a boxed version (CD/DVD),