protonscr

Lost Planet™: Extreme Condition

protonclosed appid 6510
ValveSoftware/Proton#9097 · opened 2025-10-12 by Toryalai1 · updated 2025-10-12 · 2 comments · github · game page · search this game
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TToryalai1 2025-10-12 github

Compatibility Report

  • Name of the game with compatibility issues: Lost Planet™: Extreme Condition
  • Steam AppID of the game: 6510

steam-6510.log

System Information

  • GPU: Nvidia 5090
  • Video driver version: Nvidia 580.95.05
  • Kernel version: Linux 6.17.1-2-cachyos
  • Link to full system information report as Gist:
  • Proton version: Proton-Experimental

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

The game launches, displays the Capcom logo, and then shows the error message:

“Steam is not running. Please start Steam then start the game.”

Steam is running on system.
The issue occurs with Proton Experimental, Proton 10.0-2 (beta) (as of October 2025).

However, it works with Proton 9.0-4, which means that there is a regression

Reproduction

Launch Steam.

Set Lost Planet: Extreme Condition (AppID 6510) to use Proton Experimental.

Start the game.

After the Capcom intro, observe the “Steam is not running” error dialog.

LLeopard1907 2025-10-12 github

Same issue here. EndevaourOS- Proton Experimental Bleeding Edge and Proton Experimental. Proton 9 works fine.

steam-6510.log

Kkisak-valve maintainer 2025-10-12 github

Hello @Leopard1907, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/3916#issuecomment-3393791193.

Proton versions

Upstream links