[vitus]

> Are you saying I am being unnecessarily cautious?

Yes.

If a game is marked with Linux, that means it has a native Linux port. However, Proton has gotten so good in recent years that some of the native Linux ports actually perform _worse_ than just downloading the Windows exe and running it with the compatibility layer.

The investment in Proton makes sense in retrospect, since SteamOS is based on Arch Linux, and most of these games you mention should run just fine on a Steam Deck.