rwfus VS HeroicGamesLauncher

You can use https://github.com/ValShaped/rwfus

Reason is, that valves os is based on arch linux, but they locked all the system partitions down to read only. You can unlock them or use tools to lay a fake redirect layer over them (see: https://github.com/ValShaped/rwfus), but thats advanced users stuff.

I use this with regular steamos works between channel switches on 3.5 https://github.com/ValShaped/rwfus

I'm using rwfus

I'm using rwfus to create an overlayfs over the rootfs so that packages and other changes persist across updates

I also might want to install a few other basic tools going forward, so rwfus was a great choice.

More likely things like https://heroicgameslauncher.com/

More info -> https://github.com/Heroic-Games-Launcher/HeroicGamesLauncher/issues/3281

try heroic

Heroic Games Launcher: Support is limited to Epic, GOG and Amazon but the advantage is that it can manage their games itself without the need of their own launchers. Doesn't have support for tags currently.

For "normal" games you could look yourself using ProtonDB regarding every game released on Steam and AreWeAntiCheatYet for most multiplayer games. If a game isn't available on Steam you have three possibilities. First if it's available on GOG, Epic Games or Amazon Gaming, you could use the Heroic Games Launcher. Second you could try to run the launchers through Steam itself using once again Proton. Third you could try installing it with a script or tutorial in Lutris or Bottles.

Maybe also look into HeroicGamesLauncher and how to install it, Steam isn't the only platform for gaming and HeroicGamesLauncher help with the following platform: GoG (Good Old Games) and EGS (Epic Game Store).

Heroic