🥶 Subnautica modding on Linux HELP!!! | Subnautica Modding | Page 1

olive gale Dec 31, 2025, 10:45 AM

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What's up,
I’m looking for help from someone who has gotten Subnautica mods working on Linux, preferably via Epic Games / Heroic games launcher.
If you've got it working and want to. Could you please provide a guide on how you got it working?

This is my system rn (If the info helps You)

OS: Fedora Linux 43

Launcher: Epic Games via Heroic Games Launcher

Wine/Proton: GE-Proton-latest

Install path:
/home/Arniee/Games/Heroic/Subnautica

Wine prefix:
/home/Arniee/Games/Heroic/Prefixes/default/Subnautica

Some things about my game

Subnautica (Epic Games version)

Runs perfectly fine vanilla through Heroic/Proton

Things I’ve already tried:

Full clean reinstall of Subnautica

Reinstalling BepInEx manually

Launching the game via Heroic with verbose logs enabled

Running only vanilla Subnautica + BepInEx (no mods)

Verifying correct install path vs Wine prefix path (though this could be wrong)

My Suspicions

Not zipping up the file correctly... KEKW

Epic Games version behaving differently than Steam

Heroic not launching the expected executable

Proton not loading BepInEx’s winhttp.dll / doorstop correctly

Wrong EXE being executed internally by Heroic

If anyone has successfully modded Subnautica on Linux or used BepInEx with Epic + Heroic, I’d really appreciate detailed input. Generic “just use Steam” answers aren’t helpful here.

Thanks in advance 🙂

small pumice Dec 31, 2025, 10:50 AM

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olive gale What's up, I’m looking for help from someone who has gotten Subnautica mods work...

This is for Steam but it should work with Epic too

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https://github.com/silvervirus/ModdingWikiCollection/wiki/(manual-Guide-)-Extracting-Bepinex

GitHub

(manual Guide ) Extracting Bepinex

a page to i can make a wiki for a list of modding - silvervirus/ModdingWikiCollection

olive gale Dec 31, 2025, 11:39 AM

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small pumice https://github.com/silvervirus/ModdingWikiCollection/wiki/(manual-Guide-)-Extrac...

I don't understand? The person takes a file and moves it into the Subnautica folder. But I don't know how to get that "file"?

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Is it the other videos? What are they for? (I'm pretty lost, it's the first time modding on linux)

small pumice Dec 31, 2025, 11:40 AM

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olive gale I don't understand? The person takes a file and moves it into the Subnautica fol...

Right click to Subnautica in your client

olive gale Dec 31, 2025, 11:40 AM

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like this?

small pumice Dec 31, 2025, 11:40 AM

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olive gale like this?

Go yo settings

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Find something like directory

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Find its directory

olive gale Dec 31, 2025, 11:41 AM

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Like this?

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The files for subnautica

small pumice Dec 31, 2025, 11:42 AM

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olive gale Like this?

Yes

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Download Tobey's BepInEx

olive gale Dec 31, 2025, 11:42 AM

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aight

vital knot Dec 31, 2025, 11:50 AM

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It is important to add the launch argument to heroic

olive gale Dec 31, 2025, 11:51 AM

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small pumice Download Tobey's BepInEx

Ey bro (I'm guessing you're a guy), I might be stupid. But in my tobey folder that I downloaded the doorstop version is missing. Is that okay? Can I continue with the tutorial without it?

olive gale Dec 31, 2025, 11:51 AM

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vital knot It is important to add the launch argument to heroic

What is that Ray?

vital knot Dec 31, 2025, 11:51 AM

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It is on the Tobey's BepInEx pack for Subnautica page

small pumice Dec 31, 2025, 11:51 AM

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olive gale What is that Ray?

Follow the guide

olive gale Dec 31, 2025, 12:04 PM

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Yo @small pumice, I am a little lost rn because I don't know where to put the line "WINEDLLOVERRIDES="winhttp=n,b" %command%".
I appreciate your help so far 🙂 (i'm sending some screenshots rn so You can see)

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Srry to take so much of your time bro

vital knot Dec 31, 2025, 12:14 PM

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olive gale

2nd box

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Are these screenshots of heroic?

olive gale Dec 31, 2025, 12:18 PM

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vital knot Are these screenshots of heroic?

Yes

olive gale Dec 31, 2025, 12:19 PM

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vital knot 2nd box

You mean the "game arguments" box in the first screenshot?

vital knot Dec 31, 2025, 12:19 PM

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Yes

olive gale Dec 31, 2025, 12:19 PM

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vital knot Yes

Thank you Ray

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Do you think chatgpt could fix this issue with some tweaks?

vital knot Dec 31, 2025, 12:20 PM

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Just remove the %command% and see

olive gale Dec 31, 2025, 12:25 PM

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it worked, But it said I needed (see first screenshot), so I fixed an environment label. But it won't go away. Do you know why? Or should we pull up chatGPT?

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Alr GPT fixed it, Imma try to follow the tutorial now

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I appreciate that yall are helping me out 🙂

vital knot Dec 31, 2025, 12:29 PM

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Name should be WINEDLLOVERRIDES, value should be winhttp=n,b

olive gale Dec 31, 2025, 12:30 PM

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And Game Arguments should be empty

vital knot Dec 31, 2025, 12:30 PM

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Possibly

mental basalt Dec 31, 2025, 1:40 PM

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I really gotta get heroic guide up

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mental basalt Dec 31, 2025, 2:13 PM

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https://github.com/silvervirus/ModdingWikiCollection/wiki/How-to-Mod-Heroic-Launcher-Subnautica

GitHub

How to Mod Heroic Launcher Subnautica

a page to i can make a wiki for a list of modding - silvervirus/ModdingWikiCollection

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@olive gale

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just made it

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its even easier then we thought

olive gale Dec 31, 2025, 3:08 PM

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mental basalt https://github.com/silvervirus/ModdingWikiCollection/wiki/How-to-Mod-Heroic-Laun...

Bro's IQ is insane

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Everyone should see this

mental basalt Dec 31, 2025, 3:18 PM

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Haha well my job is support so the wiki is there to make it easier

mental basalt Dec 31, 2025, 4:24 PM

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so i worked ?

olive gale Dec 31, 2025, 7:43 PM

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mental basalt so i worked ?

It worked super good!

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@mental basalt, are you familiar with the FCS mods (the super big mods whit the giant solar panel etc)?

mental basalt Dec 31, 2025, 9:52 PM

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It's not update for the buttons update as far as I know

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Vanilla expanded has some big solar panels

random hound Feb 25, 2026, 8:37 PM

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THANK

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YOU

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ALL

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sm

#🥶 Subnautica modding on Linux HELP!!!