Found in the 2018-11-13 white list update.
This game just received a native Linux version, but its whitelist status forces the download of the Windows version and runs it through Proton.
The Linux version can only be downloaded if Steam Linux Runtime is forced through Compatibility Tools.
Hello, James Spanos, developer of Primordia here, please do remove the whitelist.
I've opened up a post here, https://steamcommunity.com/groups/steamworks/discussions/0/3032599335599121285/
That explains the problem with the whitelist.
Nothing extracted yet.
Whitelist Request
System Information: Desktop
System Information: Laptop
I confirm:
Playbutton in the Steam client is sufficient.Issues
Other
I've played the game for about three hours spread over my laptop and deskto and have experienced no issues.