Fossil Fuels
Subnautica — Mods & Enhancements
Fossil Fuels is a CustomCraft2 addon that introduces three types of fossil fuel into Subnautica, which can be processed in the bioreactor to generate power. With 65 endorsements and last updated in March 2020, it's a niche utility mod for players seeking alternative power sources.
📦 Full mod page on discovermods
Downloads, ratings, compatibility info, installation guides, and user reviews.
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ItemsExample
Downloads: 1,348 | Endorsements: 65💡 Notes
By PersonEX | v1 | 65 endorsements
🎯 Tips & Tricks
Make sure CustomCraft2 is installed first, as this mod won't work without it.
Check the mod's compatibility with your Subnautica version—since it's from 2020, it may need patches for newer builds.
Use a mod manager like Vortex to handle installation and load order automatically.
🔧 Troubleshooting
Mod not working
Check load order and required dependencies. Read the full mod description.
⚠️ Common Mistakes
- Installing multiple mods that modify the same files without checking compatibility
👍 Pros
- Simple concept: more fuel options for bioreactor enthusiasts.
- Small but dedicated following (65 endorsements).
- Easy to understand—no complex mechanics, just fuel for power.
👎 Cons
- Requires CustomCraft2, so you need an extra mod installed.
- Last updated in 2020—might not work with the latest Subnautica patches.
- Only adds three items, so it's a minor addition for most players.