Do you really have this few games in your library?
Yes. I don’t play anything else except DayZ currently.
Second, if you are already using Proton and my first guess is wrong, use another Proton version.
Yeah I had all this enabled. The game worked perfectly before and then just all of a sudden stopped launching. I tired Proton 8 and 7 aswell but no difference.
What distro are you using?
Ubuntu
Did you try using Flatpak instead of the native package?
I was using the snap version of Steam that I had installed from Ubuntu App Store. I uninstalled it and installed the native version using terminal. Obviously I had to re-download and re-install the game aswell and it started working again after that. I’m not entirely sure what was causing the issue in the first place but I’m suspecting it was an issue in the steam app itself. What is curious though is that the exactly same issue occured to me previously with Windows 7 aswell and judging by the reports online, I’m not the only one.
The problem is however solved - atleast for now, and that’s the most important thing. Thanks for the help though! The assistance I got from this community is invaluable. I’d be completely stuck with this on my own.