There is a new application available for Sparkers: SteamTinkerLaunch
What is SteamTinkerLaunch?
Installation (Sparky 6 only):
SteamTinkerLaunch (short stl) is a Linux wrapper tool for use with the Steam client which allows to customize and start tools and options for games quickly on the fly.
stl works with linux native games and with games using proton! (Some features (f.e. ReShade) are only available for games using proton) (Non-Steam games added to Steam are supported as well).
There are two ways to use stl with steam. Either as Launch Option or as Steam Compatibility Tool.
sudo apt update
sudo apt install steamtinkerlaunch
or via APTus-> Game section.
License: GNU GPL 3.0