ECC Library (Legacy)
⚪ Last updated 2022⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview
🔍 Analysis
- 👍 2.2% endorsement rate — high engagement, a strong quality signal
- 🏆 #9 of 36 Libraries mods in this game by downloads
📋 About This Mod
This is a Modding Library. It is a tool for modders, and a requirement for any mods that use it. The mod itself does nothing.
If you're playing on the latest version of Subnautica, please use this ECC Library instead!!!!
Installation
Install this mod like you would with any mod that requires QModManager.
What is this for?
This library helps in the creation of creatures and eggs, and adding them into the world. If you're playing with mods, though, all you need to know is that this mod needs to be installed if you are using creature mods that were built around it.
Instructions for Modders:
I have created a wiki which covers the basics of creating a creature mod for Subnautica
More resources for Modders:
Source code
Mod example 1: De-Extinction
ECC Library (Legacy) is a modding library by Kallie23 that assists modders in creating custom creatures, creature eggs, and edible items. With 2,864 endorsements and 128,482 downloads, it's a well-established resource for mod developers, though it hasn't been updated since November 2022.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Community-approved with 2,864 endorsements and over 128k downloads.
- Essential for modders wanting to add custom creatures and eggs.
- Stable legacy version—still widely used despite no recent updates.
⚠️ Cons
- Last updated in 2022—may be incompatible with newer game versions.
- Not for players—requires modding knowledge to utilize.
- Legacy status suggests it's outdated; check for a newer version.
For mod developers who want to create custom creatures, eggs, or edible items. If you're a player looking for new content, this isn't for you—skip unless you're building mods.
💡 Beginner Tips
- If you're new to modding, study the library's API and examples before using it.
- Check if a newer version of ECC Library exists, as this is the legacy release.
- Ensure your game version matches the mod's compatibility window (pre-2022).
📊 Mod Details
- Game
- Subnautica Mods
- Author
- Kallie23
- Version
- 1.2.1
- Downloads
- 128,482
- Endorsements
- 2,864
- Category
- Libraries
- Created
- 1/9/2021
- Updated
- 11/24/2022
🧩 Commonly Used Together
Users add these mods to the same collections — a real compatibility signal, not an AI guess.
🔧 How to Install Subnautica Mods
Download from Nexus.
📖 Full step-by-step install guide for Subnautica →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Subnautica commands, item IDs, and more.
Keep browsing — more Subnautica mods await