ETS2 on Steam doesn't have any product key. If you are tring to find it for registering on World of Trucks, click on the "Sign in through Steam" button on the join page [worldoftrucks.com]. sorry can i get instruction how to do. #4. DarthReevan 4. Euro Truck Simulator 2 > General Discussions > Topic Details. KrisTheGreat Jul 29, 2018 @ 9:14am. MAJOR PROBLEM . Product key requesting !! Hello dear community I have a long time to play and sudendly ETS2 on Single Player asks me a product key :/. While i can play on Multiplayer.. I have bought ETS2 on Steam and it was working well Global. From. $0.77. 86. 1. 2. Euro Truck Simulator 2 Steam Key GLOBAL DLCs / expansions - buy cheaper on Eneba | Great price on all downloadable in-game content offers. .