Whitelist Request

• Name of the game to be whitelisted: PHOTON CUBE
• Steam AppID of the game: 867510

System Information

• GPU: Intel HD Graphics 520
• Driver/LLVM version: Mesa 20.0.1 (git-4392cf2d6d)
• Distro version: Xubuntu 20.04
• Link to full system information report as Gist: https://gist.github.com/FurretUber/dc6879756ca79fc1d1f18b2e9d4bf9a4
• Proton version: 4.11-13

I confirm:

• [X] that pressing the Play button in the Steam client is sufficient.
• [ ] that runtime config options are necessary to run the game.
• [ ] that no workarounds other than PROTON_* env variables are necessary.

Issues

• [X] I haven't experienced any issues.
• [X] There are no issues left open for this game.
• [ ] Although I consider the gaming experience equal to Windows there are remaining issues:

I found no problem playing for more than 30 hours, everything worked perfectly.