Subnautica mods

Best Mods for Subnautica: Below Zero

QModManager 4

A standalone installer for the QMods system, the easiest to use mod loading framework for Below Zero.

How to Install QMods:

Download the QModsSetup.exe file

Run the installer

Make sure your Subnautica install directory is correct

Click Install

How to Uninstall QMods:

Open the Windows “Add or Remove Programs” dialog

Find QMods in the list

Click Uninstall

Confirm you want to uninstall

How to Install Mods for QMods:

Download the mod, it should contain a file called “mod.json” and some .dll file

Put those files in a folder in your Subnautica directory named “QMods\<ModName>” where <ModName> is the name of the mod you downloaded

SMLHelper Zero

What is SMLHelper Zero?

This library is basically allows you to easily communicate with the game so
that you can focus more on the mod’s features you are developing. It
does nothing on its own, but is rather a “tool” to help other mods.

What’s the difference between this version and the one for the original Subnautica?

There were some big changes made in Below Zero to how crafting data is handled.
Because of that, we had to rediscover how to handle patching of craft data all over again.
And that means we also had to figure out a way to be able to keep SMLHelper moving forward on both games at the same time.

You can download SML Helper Zero Here.

Subnautica map version for Below Zero.

Features of MAP

– Map is hidden by fog (can be disabled in options).
– Map opens with the M key. Ping Manager opens with the N key. Hide icons with the H key.
– Displays signals, player’s position, player’s direction and coordinates.
– The signals are controlled by left (show/hide) and right (change color) mouse button.
– Remote maproom scanning with middle mouse button (operates at a limited distance).
– Tracked icons (heat area).
– Several types and levels of maps (topographic, biomes).
– Options locate in game menu and can be opened only through the active game.
– Support xbox 360 gamepad.
– Use CTRL + LBM on the map to create a note.

To display direction on the map you need to equip the compass. 
To control the scan room you need to equip the scanner room hud chip.
The mod is made for stable update branch and may not work with experimental versions.

More Quick Slots

This is a port of the similar mod for Sabnautica, now available for Below Zero,.
The mod extends the number of quick slots from default 5 to 10.

The mod was ported from the original Sabnautica mod MoreQuickSlots developed by the RandyKnapp
The mod extends the number of quick slots from default 5 to 10.


Automatically crafts ingredients for a blueprint and takes materials from the neighboring storage.

Works with fabricators (modification, upgrades, scanner room), vehicle constructor and building tool.

In mod settings there are several modes. 

  • Inside – Takes ingredients from the neighboring storages only inside the base or inside the Cyclops.
  • InRange – Works at a distance of 100 meters from the base or Cyclops.
  • AutoCraft – Allows you to automatically make the missing ingredients. But materials and energy are also required for this.

This options are available in the loaded game.

Small locker can be disabled for the EasyCraft. Add the * symbol at the end of the field labels.

SnapBuilder – Snap-to-Grid for Below Zero

Finally, we can build perfectly aligned and rotated items with the Habitat Builder!

Fully customisable – all keybinds and snapping parameters can be tweaked in the Mod options menu.

By default, snapping is enabled with this mod installed. The level of snapping can be fine-tuned in the Mod options menu.

Slot Extender Zero

Slot Extender Zero allows you to use 12 upgrade modules simultaneously in the Prawn Suit and the Seatruck.


  • SlotExtenderZero adds (max. eight) extra upgrade module slots tothe Prawn Suit and the Seatruck.
  • SlotExtenderZero also add two arm slot to the Seatruck.
  • SlotExtenderZero also add two extra chip slots to the Player.
  • SlotExtenderZero also add three upgrade module slots to the Hoverbike.
  • This mod is automatically compatible with all vanilla upgrade modules and should even be compatible with all modded upgrade modules for the Prawn Suit and the Seatruck.
  • Prawn Suit storage modules limited to four!
  • Slot ExtenderZero also adds extra QuickSlots for the extra slots.
  • Default keys:
  • R‘ for Prawn storage access.
  • T‘ for Vehicle upgrade access.
  • Upgrade Slot 1-12 hotkeys‘ for Seatruck storage access (if there is a storage module).
  • 6,7,8,9,0,/,=‘ for extra module hotkeys.
  • The contents of all the upgrade slots, including the extra ones, is handled by the normal game save files.
  • Can change the slot layout to Circle and Grid (in mod configfile).


Advanced Inventory

Expands inventory options.

Adds scrolling zone for displaying unlimited inventory.
Adds shift/ctrl + LMB hotkeys to quickly move all items.
Can to change the maxRows (after which the scrollbar will appear) parameter in config (config will appear after game).

The mod is made for stable update branch and may not work with experimental versions.

1. Install QModManager.
2. Unpack the archive to folder \SubnauticaZero\QMods\. Should be \Steam\steamapps\common\SubnauticaZero\QMods\AdvancedInventory_BZ\
3. Also need to install other mod that increases inventory.

I recommend not exceeding the width of 7 and the height of 100 for any containers.

Gamepad not support.

New items can blink incorrectly.

Seatruck Storage

This mod adds (max. two) big side storage locker to the Seatruck main cabin.


  • Seatruck Storage adds (max. two) big side storage locker to the Seatruck main cabin.
  • Each storage container size is 56 units.
  • Storage modules can only be moved in slots if they are completely empty.
  • All of Your items in storage modules is handled by the normal save game files.
  • If SlotExtenderZero is installed, the storage modules are also available from inside Seatruck.
  • If SeaTruckArms is installed, the objects collected by the claw and drill arm will automatically be inserted into the storage modules. 

Craftable at:

  • Vehicle Upgrade Console
  • Workbench
  • Seatruck Fabricator

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