Game Launchers
Steam
Flatpak reduces games performance, sometimes up to 20%, use the system/distribution packages if at all possible
Epic Games Launcher
Fornite is not supported. Does work on GeForce Now.
A wine manager is included in Heroic so you don't need to use ProtonUp if you don't want to.
https://heroicgameslauncher.com/
GOG Galaxy
Native Linux version coming soon TM
For now you can use https://heroicgameslauncher.com/