SMLHelper Zero

⭐ ⭐⭐ (6,767 endorsements) 📥 236,050 downloads 📌 v2.14.1 📅 12/7/2019
⚪ Last updated 2022

By Subnautica Modding Community · Utilities

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 10/31/2022 📅 Created: 12/7/2019

🔍 Analysis

  • 👍 2.9% endorsement rate — high engagement, a strong quality signal
  • 🏆 #2 of 26 Utilities mods in this game by downloads

📋 About This Mod

SMLHelper has been deprecated and will no longer receive updates.

Many mods are now using Nautilus instead. You may need to install both libraries.

A library that helps you add items, models, sprites, etc into the game in a very easy way!

Before asking any questions, please read the FAQ!

Also, DO NOT try to change the files in the Modding Helper folder, especially the

folders that contain the word "Cache". They are very crucial in

determining how SMLHelper will add items into the game, and it is REQUIRED that they are not touched, especially if you don't know what you're doing!

Installation

1. Download and install QMods.

2. Download the archive.

3. Open up the archive with WinRar or 7zip.

4. Drag-and-drop the "SMLHelper_BZ" folder into your QMods folder. (if

your QMods folder doesn't exist, run the game at least once so that

QModManager can make it, or you can make the folder yourself.)

FAQ - For Players

What is this?

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.

FAQ - For Modders

How do I enable debug logging?

  • []Debug logging (for development and troubleshooting) can be enabled by changing the value in the new file EnableDebugLogs.txt.

    []Debug logging can also be toggled from the in-game Mods menu, however, since

    most of the SMLHelper actions (and thus logs) take place before the main menu loads, this will mostly only be useful for subsequent loads of the game.

Will I have to completely re-write my Subnautica mods that used SMLHelper when porting them to Below Zero?

Not really. But you will need to make a few changes.

Pay close attention to the new handling of blueprint/recipe data.

The old TechData class is now RecipeData in Below Zero.

All of the original Handler APIs are still present in SMLHelper Zero so it shouldn't take much effort to make the jump.

Does this mean development for SMLHelper is now split between the two games?

Not at all. The

🤖 AI-enhanced — based on mod data

SMLHelper Zero is a Subnautica modding library that simplifies adding items, sprites, and crafting logic to the game. Aimed at mod authors and required by many player-facing mods, it's a cornerstone utility with 6,767 endorsements and over 236,000 downloads, last updated October 2022.

✨ Key Features

Provides a library to add new items to the game.
Provides a library to add sprites for new items.
Provides a library to implement crafting logic.
Focuses on ease of use to reduce mod development friction.

📊 Pros & Cons

✅ Pros

  • Massive community approval with 6,767 endorsements.
  • Over 236,000 downloads shows it's a staple for Subnautica mods.
  • Created by the Subnautica Modding Community, so it's tailor-made for the game.

⚠️ Cons

  • As a library, it does nothing on its own — you need other mods that use it or you must build your own mod.
  • Last updated October 2022, so it may lag behind newer Subnautica patches.
🎯 Is This For You?
For Subnautica mod authors who want to skip tedious boilerplate and focus on adding content like new items or crafting recipes. Also for players who use mods that depend on SMLHelper Zero — you'll need this installed as a dependency. Skip if you're looking for a gameplay mod; this won't change anything by itself.
📦 Install:Easy· Under 1 minute

💡 Beginner Tips

  • Install this only if a mod you want requires it, or if you're developing your own Subnautica mod — it won't add anything visible by itself.
  • If you're new to Subnautica modding, check the game's modding community guides for how to set up a mod loader before dropping this library in.
  • Keep SMLHelper Zero up to date with the mods that depend on it; if a mod updates and requires a newer version of SMLHelper, update both.

📊 Mod Details

Game
Subnauticabelowzero Mods
Author
Subnautica Modding Community
Version
2.14.1
Downloads
236,050
Endorsements
6,767
Category
Utilities
Created
12/7/2019
Updated
10/31/2022

🧩 Commonly Used Together

Users add these mods to the same collections — a real compatibility signal, not an AI guess.

🔧 How to Install Subnautica: Below Zero Mods

Download from Nexus Mods.

📖 Full step-by-step install guide for Subnautica: Below Zero →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Subnautica: Below Zero commands, item IDs, and more.

Keep browsing — more Subnautica: Below Zero mods await

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