Unreal Tournament 4 has been on hold for a long time as Epic develops other games. Thanks to the Linux community there are some dedicated developers who have made Unreal 4 available for us to play again!
Following the instructions in the reddit post, I was able to download, install, launch and sign in. Then I could play my own singleplayer training maps or local LAN maps. Thank you for including LAN!!!
I noticed some serous stutter or lag when initially playing. This must be some caching issue with Linux, Vulkan or OpenGL. Not really sure, but it sure is annoying during the first match. Once the issues are loaded up, then it plays just fine afterwards!
Mint 20.3 64-bit
GeForce GTX 1650