Compatibility Report

• Name of the game with compatibility issues: Gnuz the duel (playtest)
• • Steam AppID of the game: 3470360

CPU:
24-core AMD Ryzen Threadripper 3960X (-MT MCP-)
speed/min/max: 2199/2200/4568 MHz Kernel: 6.17.9-arch1-1 x86_64

Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900
XTX/7900 GRE/7900M] driver: amdgpu v: kernel
Device-2: Logitech C920 PRO HD Webcam driver: snd-usb-audio,uvcvideo
type: USB
Display: wayland server: X.org v: 1.21.1.21 with: Xwayland v: 24.1.9
compositor: kwin_wayland driver: X: loaded: amdgpu
unloaded: modesetting,radeon dri: radeonsi gpu: amdgpu resolution:
1: 2560x1440~144Hz 2: 2560x1440~360Hz
API: EGL v: 1.5 drivers: kms_swrast,radeonsi,swrast
platforms: gbm,wayland,x11,surfaceless,device
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.2.7-arch1.1
renderer: AMD Radeon RX 7900 XTX (radeonsi navi31 LLVM 21.1.5 DRM 3.64
6.17.9-arch1-1)
API: Vulkan v: 1.4.328 drivers: radv surfaces: N/A

Full system info
https://gist.github.com/Overl0rd0/547e7431ffca7214245d979d2678d0a7

• Proton version:

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Log
steam-3470360.log

What's the problem?
I try to start the game under proton 10 or 9. It shows the splash screen then gives an error "Please run through steam launcher" which I obviously am trying to do.

Reproduction
Just run the game with proton 10 or 9 and wait.