Improved Alien Containment(BepInEx)
🟠 Updated over a year ago⚠️ Install Order · 3 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview
🔍 Analysis
- 👍 1.3% endorsement rate — high engagement, a strong quality signal
- 🏆 #152 of 456 Gameplay mods in this game by downloads
📋 About This Mod
🌿 Improved Alien Containment
✅ Requires BepInEx and Nautilus
📂 Install to:
BepInEx/plugins/ImprovedAlienContainment/
🧬 OverviewThis mod overhauls the Alien Containment system to introduce realistic breeding conditions. Creatures will now require specific plants in the containment’s planter in order to:
-
[]Hatch from eggs 🥚[/]
[]Breed and lay new eggs 🐣[/]
⚙️ Features
✅ Eggs will only hatch if their required flora are present
✅ Creatures can only breed when paired and their preferred plants are available
✅ Configurable per-creature plant lists
✅ Optional breeding cap to prevent overpopulation
✅ JSON-based config for full control
✅ In-game Mod Options Menu for adjusting limits and toggling debug logging
🛠 ConfigurationAll settings are stored in:
BepInEx/plugins/ImprovedAlienContainment/AlienContainmentConfig.json
Settings you can modify:
-
[]MaxCreatureCount— Controls how many creatures can exist in a tank before breeding is blocked[/]
[]LoggingEnabled— Enables or disables debug output to console/log[/]
[]RequiredPlantsPerCreature,
PerEgg, and
PerUndiscoveredEgg— Define what plants each creature or egg requires[/]
🌱 Plant Reference TableBelow is a reference of plant TechTypes to help you configure breeding requirements:
In-Game NameInternal TechType
Improved Alien Containment is a gameplay mod for Subnautica that requires specific plants in the containment planter before eggs can be laid or hatched. It adds a layer of realism and resource management for players who want more challenge in breeding alien creatures. With 67 endorsements and recent updates, it's a niche but actively maintained mod.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Adds meaningful depth to breeding—no more free eggs without proper flora.
- Recent update (August 2025) shows the author is still supporting it.
- Lightweight and focused—does exactly what it says without bloat.
⚠️ Cons
- Small mod with 67 endorsements—might not have a huge community for troubleshooting.
- Could break if you're using other mods that alter containment behavior—no compatibility notes.
For Subnautica players who want a more challenging and realistic breeding system. If you're tired of hatching eggs without any prep, this mod forces you to plan your flora. Skip if you prefer casual, no-fuss gameplay or don't want to mess with BepInEx.
💡 Beginner Tips
- Make sure BepInEx is installed correctly and the mod file goes into the BepInEx/plugins folder.
- Check the mod's page for any plant lists—some plants might be rare or require specific biomes.
- If eggs aren't hatching, double-check that the required plants are fully grown, not just planted.
📊 Mod Details
- Game
- Subnautica Mods
- Author
- ModMaker PG85 Updating Cookie
- Version
- 1.0.0
- Downloads
- 5,036
- Endorsements
- 67
- Category
- Gameplay
- Created
- 3/10/2024
- Updated
- 8/13/2025
🔧 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