

In case you didn’t see the trick further down the thread - you have to make sure to install the windows version of the game that runs with proton. Then you can connect to online matches. Installing the linux version is a trap; frankly, they should just delist it at this point.
Oh that was just FSN, an actual filesystem browser for IRIX back in the day. You can install the port FSV if you want to browse your files as if they’re 3D objects on Linux today