I hate Microsoft and Windows just as much as the next self-respecting nerd, but this is no less a lol right now than it was 20 years ago. It’s like Linux users all play the same 15 titles that have Linux support and think those 15 games reflect broad ecosystem support.
Most games that come out today, in 2025, are playable on day 1. I'm not just talking about games that are less graphically demanding (eg. Silksong), but games like Silent Hill f. It just works out of the box.
So yeah, even the most recent, graphically-intense AAA games run on Linux thanks to Proton.
Because from my ~1 500 titles steam library, I can think of one game that I had issues with. And even this particular game (which is Tomb Raider 2013, btw) worked perfectly fine after a little hack. And ironically the "hack" was checking a checkbox in Steam to force using the Windows version of the game instead of the official Linux port.
???
Oh right. ‘Except for games with anti cheats’ - so like, at least half the market lol, and more than 90% of games by game time.
But not all popular games are available on Steam, Fortnite or Rocket League are examples.
Halo Wars 2
Crackdown 3
Gears of War 4
The reason is that these are UWP-only games which are only available through the Microsoft store. Which means they will likely never run on Linux.