Typically for games that require launchers I can just open the launcher through steam and it'll do it's thing just fine. The launcher does indeed open, it says it's downloading, but then eventually I get "Download failed: Error decoding response body." Figured I'd make a post and see if anyone else ends up getting this working on linux or if the dev has any input. I'm aware that there is no direct linux support, that's perfectly fine, but figured someone had to start the inevitable "How to get working on linux" thread.

I went the launcher route for simplicity on my end in reality. It makes it very easy to deploy a new client version or new asset without much struggle on anyone's end. I think that error might be due to the cause of failed TLS validation after some searching. I built the launcher for Windows as well and to my knowledge it relies on native-tls by default. My best assumption is the cert store for your Windows emulation is empty or just non-existent. How are you emulating the environment and I can try and help some more!

EDIT: Very sorry I only half read the title and I very clearly am only half awake as well. I am just going to release a new launcher version that SHOULD support most Windows emulators regardless. 

That aside, making a native Linux release is on my TODO list and hope to get it done in the near future!

Thanks for the response! First things first, I got it going. I will walk you through my process for every launcher and then tell you what I did wrong. First the process I use:

- On steam in the bottom left press add a game and choose "Add non-steam game" 

- Browse to this game's launcher file and select it (downloads folder, likely)

- Back In the steam library locate the new executable you just added, right click, click properties

- In the properties window, choose the Compatibility tab, check off "Force Compatibility" and select The latest NON-experiemental proton (9.0.4 as of now).

- Close out of properties, click play. Steam handles the rest

The mistake I made was a chose proton experimental, and subsequently the launcher opens but fails to download the files. So if anyone else is on linux and wants to play there's a step by step that works..

I forget the wonders that steam has done for the Linux gaming community. Thanks for figuring that out!