Close and follow Below. Change Steam Game Launch Parameters. Open Steam. In the Steam Library, right-click a game and select Properties. *In the Launch Options text box, type in –windowed. **If the game doesn't launch in windowed mode, try typing in –windowed -w 1024. Close the Properties window and launch the game. Reese Aug 13, 2020 @ 8:28pm. It works like this: You run the game > friend joins (basically watches), but they can send input to your game. Remote play together in ETS2 is nothing more than remotely controlling your friends' game. You could be driving along, and your friend may hold A (steer left) and there you go, left into oncoming traffic. The game then makes a new "Euro Truck Simulator 2" folder in the directories where the game is. I named that new folder "Euro Truck Simulator 2 1.39" Mind that you need to change the name for two folders. The one in your documents and the one in your Steam folder. Now I have two folders in "Documents" and two folders in my Steam-folder. One is aBX6qZ.