GE-Proton 10-34 has arrived bringing even more gaming fixes for Linux / SteamOS, so here's all you need to know for the community-run compatibility layer.
Do ensure you check out the GamingOnLinux explainer on the different Proton versions and the GamingOnLinux guide to install GE-Proton to get started with it. For Steam you generally only need GE-Proton for very specific games as it's best to stick with Valve's official Proton for direct support, but GE-Proton is great for outside of Steam like with the Heroic Games Launcher.

Pictured - God of War Ragnarök
From the changelog here's everything:
Proton:
- update latest wine bleeding-edge
- update latest dxvk
- update latest dxvk-nvapi
- update latest vkd3d-proton
- update latest vkd3d
- update latest FEX
- import proton script game fixes from upstream
- import aarch64 build changes from upstream
Protonfixes:
- added protonfix for god of war ragnarok playstation sdk error
- added protonfix to disable hidraw and enable sdl for gta v
- added protonfix for GOG version of Oddworld: Stranger's Wrath HD
- added protonfix for cpu topology for Assassin's Creed 1
Patches:
- patches: Enable .exe dynamic relocation. For XIV specifically, this fixes issues with low address space being filled up by everyone and everything and, as a result, some plugins failing to apply their hooks and leaving the game in an unstable state.
New Features:
add new PROTON_WAYLAND_MONITOR to allow easier setting of WAYLANDDRV_PRIMARY_MONITOR
attempt to detect and set primary monitor if wayland is enabled and no primary is set
How these work:
You can now specify something like PROTON_WAYLAND_MONITOR=HDMI-A-1 to specify which monitor the wine-wayland driver uses when enabling wayland. Previously you could already do this using WAYLANDDRV_PRIMARY_MONITOR, but it wasn't documented. PROTON_WAYLAND_MONITOR is now an easier to remember envvar for setting that value. Additionally by default if no WAYLANDDRV_PRIMARY_MONITOR is set when enabling wine-wayland, GE-Proton will now attempt to use xrandr to detect the default primary monitor set by the desktop environment, and if found, display on that monitor, just like xwayland does.
Source: GitHub




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