---
title: "Subnautica support"
description: "How far Evil Engine's passthrough modding support for Subnautica gets today. Mounts from your own install through the game's own index of its content. Nothing converts or shows on screen yet."
url: "https://evil-engine.com/games/subnautica"
modified: "2026-10-31T19:00:00.000Z"
site: "Evil Engine"
about: "Evil Engine, the passthrough modding engine"
---

[← All games](https://evil-engine.com/games) 

Mounts Unity 

# Subnautica

Mounts from your own install through the game's own index of its content. Nothing converts or shows on screen yet.

- **Ticket**: #010
- **Checked on**: Steam, Windows build under Proton
- **Last checked**: October 31, 2026
- **Files**: 15,760
- **Mount**: `subnautica/pc/83031`

## Mounting

3 of 4 done

- Done  

**Finds your copy**  
Picks up the install on its own, from Steam or wherever it lives.
- Done  

**Reads every file**  
Every file reads straight from your copy, in the order the game itself looks them up.
- Done  

**Matches players' copies**  
Hashed in full for now. The game's own hash for each bundle waits on a second build to check it against.
- To do  

**Brings its mods**  
Planned for BepInEx's plugin folders, once there's a modded copy to check against.

## Converting

0 of 4 done

- To do  

**Models**  
Its models turn into Evil Engine models.
- To do  

**Textures and materials**  
Its textures and materials turn into Evil Engine's own.
- To do  

**Maps**  
The seabed waits on reading the game's own world files.
- To do  

**Sounds**  
Its sounds turn into Evil Engine sounds.

## In game

0 of 3 done

- To do  

**Shows on screen**  
Converted content actually draws in Evil Engine.
- To do  

**In the spawn menu**  
Its props and models land in your spawn menu, no Plugin needed.
- To do  

**Maps you can visit**  
Subnautica mounts, but lists no maps in the Singleplayer menu yet.

## Where it stands

Evil Engine finds Subnautica on its own and reads it through the catalog Unity built for it, the game’s own index of its content bundles, along with the world, sound banks and text that sit beside it. That’s 15,760 files. Every one of the 5,467 bundles the catalog names is there at the size it expects, and every bundle reads back in full.

Your copy is fingerprinted in six parts named after what a server would need, such as the vehicles, the creatures, the habitat pieces and the world itself, so a server spawning a vehicle doesn’t ask for the whole 6.6 GB install. Every file matched Steam’s own checksums.

## Known issues

- The game hasn’t been launched on this copy yet, so what it writes once it runs hasn’t been checked.
- Below Zero is a different game and isn’t recognised yet.
- The Mac version isn’t recognised until it’s been checked.

## Next up

- Launching the game once and checking what it writes.
- Mods, once there’s a modded copy to look at.
- A look at Below Zero’s install, for what it shares with Subnautica.

## About Evil Engine

Evil Engine is a **passthrough modding** engine by Pushbar Interactive. Modding through the games you already own instead of around them: the content comes from each player's own copy and is never extracted, ported or redistributed. The term took off in September 2026 with mods that run two games at once and wire them together by hand, one pair at a time. Evil Engine comes from that lineage and makes the process repeatable: it learns each engine once, maps each game onto shared vocabularies once, and gives mods one API, so every mounted game works with every other. More: https://evil-engine.com/passthrough-modding

- Every page, for agents: https://evil-engine.com/llms.txt
- Wishlist on Steam: https://store.steampowered.com/app/3731310/Evil_Engine