Cool, but after reading "All the gaming platforms you already know, right here" and searching for Xbox Game Pass or Forza Horizon and finding nothing, I gave up.
> The most popular gaming platforms (Epic Games Store, GOG Galaxy, Origin, Battle.net, EA Games..) are already available as an installer in Bottles.
They even put an "Available Installers"-button right below.
Xbox Game Pass won't work on Linux until MS decides they want to, and I don't see that happening.
FH4 works out of the box on proton btw, at least when I did it via steam.