Linux

Lutris works pretty well for most other games I've tried. I have Epic working on it, Battle.net, MTG:A, and RSI/Star Citizen. Few issues here or there with any given game but honestly not too bad. Performance is on par with Windows. I dual boot for Fusion360 and CAD so I can do a/b testing.

Ubuntu 22.04/Mate, Threadripper 2950x w/ 64gb ram, 2x2tb NVMe, Radeon RX 6800 XT

Depends on the game, honestly. DOS2? Install & run. The only game I really had trouble was Age of Wonders: Planetfall. AoW 4 works just fine, without any issues. You can also use proton for non-setup games, pick any runner you want in e.g. lutris. Or Heroic Launcher.

@Kaldo

@s804

I haved used the heroic launcher to play games from GOG and the Epic stores without too much fuss. I even got a pirated game to play after I used a windows vm to run the extraction/unpack tool.

It's not nearly as smooth and painless outside of Steam and Proton, but it's still a lot better than it used to be. 3 hours of work is pretty rare.

Heroic and Lutris take some time to get setup up properly, but once they are they usually just work. If they don't, popular games are usually easy to find help with. Older games are also more likely to just work, so for most people I think it's mostly just games with uncooperative anti-cheat that cause major problems. There will be more minor problems than on Windows though, and a few games here and there that just stubbornly refuse to work.

I would try adding the game to Steam and using Proton that way

(In the Steam client) Games > Add a Non-Steam Game to My Library > (Add the executable) > Select the game in your library > Properties > Compatibility > Force the use of a specific Steam Play compatibility tool > Select your preferred Proton version

Granted, I've only tried this with one game, but it worked like magic. Your mileage may vary.