Steam

Steam

Launch options

1. Right-click the game → Properties.
2. Under Launch options:

~/.local/bin/linuwux %command%

3. Compatibility tool: GE-Proton or CachyOS Proton (not stock Valve Proton).

Non-Steam games

Same launch option string. Add the game → set compatibility tool → set launch options as above.

With MangoHud

~/.local/bin/linuwux mangohud %command%

Or use a Steam MangoHud toggle/script if you already have one — keep linuwux outside wrapping mangohud in the wrong order (Common mistakes).

Debug

LINUWUX_DEBUG=1 ~/.local/bin/linuwux %command%

Gamescope

Steam + gamescope is the better-tested path. For third-party launchers see Gamescope.