I have previously run this on Mint and Ubuntu 18.04 without issue. That being said I recently upgraded my primary Ubuntu LT to 19.10 and P99 failed to launch. I don't normally play P99 on that system though and haven't circled back to it. I'm not sure if it's an issue with the OS or maybe some corruption, but just be aware of that. I also had some crashing issues with Libre Office, but that may be because I did the "upgrade" path to 19.10 instead of a fresh install, which I usually would do. In any event, see below.
Wiki install guide:
http://wiki.project1999.com/EverQuest_in_Linux_Guide
If you are familiar with Linux, Loramin hits it on the head in this post.
https://www.project1999.com/forums/s...d.php?t=332627