Steam Launch Option
Steam offers a little text field aka 'Steam Launch Options' , where one can configure custom game launch options. Usually this field is used to add Game-Command-Line-Arguments to the game launch.
Instead of using Steam Tinker Launch as Steam Compatibility Tool (recommended for Proton games), it is also possible to use it as Steam Launch Option for native Linux games.
To do so, just add it to your Steam Game Launch Option command line like this: steamtinkerlaunch %command%
If you installed via ProtonUp-Qt, you'll want to add the launch option like this: $HOME/stl/prefix/steamtinkerlaunch %command%.
(Steam Deck users also read the Steam Deck wiki)
For every game using any Compatibility Tool, Steam downloads the Windows version, so if you want to use steamtinkerlaunch with a linux game, use the Steam Launch Option!
When using the Steam Launch Option,
- the proton version used is always the one configured in Steam directly, so steamtinkerlaunch interal proton versions are ignored
- the Steam Linux Runtime can be en/disabled (better than before)
- the Steam Reaper command can be en/disabled