Valve dropped Counter-Strike 2 support on macOS and older hardware
With the release of Counter-Strike 2, it seems Valve are continuing to move away from macOS support just like they did with SteamVR. Thankfully, Valve are still investing in Linux and CS2 is supported on Linux.
How to setup OpenMW for modern Morrowind on Linux / SteamOS and Steam Deck
How to install Hollow Knight: Silksong mods on Linux, SteamOS and Steam Deck