Why don't you run the games with proton? All games I've tried run with it. Here is an example script: user.sh   I would recommend to create a folder called scripts in the appdata directory itself, then put the script in it (this basic script that I've provided does a 'apt-get update' to get all the latest packages and then installs nano with 'apt-get -y install nano' don't forget the '-y' switch otherwise it won't install the packages.   After that go in the template fro