Compatibility Report

• Name of the game with compatibility issues: Monster Rancher 1 & 2 DX
• Steam AppID of the game: 1716120

System Information

• GPU: NVIDIA GeForce RTX 3070/PCIe/SSE2
• Driver/LLVM version: 4.6.0 NVIDIA 470.161.03
• Kernel version: 5.15.0-69
• Link to full system information report as Gist: https://gist.github.com/robotjunkyard/fab743e7f665c5d96d641269c8a999f9
• Proton version: 8.0-1

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.

Symptoms

This report pertains to the Launcher that starts up, not the games themselves.

Using "Proton 8.0-1" compatibility and launching the game, going into the Keyboard & Video Resolution options window from the launcher pops up an error and fails out, dropping back to the Launcher:

"Initialization of DirectX failed. A device could not be found (-2113929215)"

This options window is the only known way to toggle Fullscreen mode, video resolution, and change controller/input settings.

Reproduction

Launch game using Proton 8.0-1
In launcher:

• Choose Options
• Choose Keyboard/Resolution Settings
• That will launch what seems to be another program titled [b]"MonsterRancher 1&2 DX" Startup Settings[/b]
• You will see the error message about DirectX
• Options window then shuts down and drops back to the launcher

Workaround

Reverting back to "Proton 7.0-6" resolves this specific issue.

Proton debug log file

Link: steam-1716120.log