Slot Extender (BepInEx - Nautilus)
subnautica — Mods & Enhancements
Slot Extender 2.8 by Senna is a gameplay mod for Subnautica that expands equipment slots: it adds 2 more chip slots, allows 12 upgrade modules in the Seamoth and Prawn Suit, and 14 in the Cyclops. With over 13,000 endorsements and 563,000 downloads, it's a popular quality-of-life enhancement for players who want more customization.
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Downloads, ratings, compatibility info, installation guides, and user reviews.
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GameplayExample
Downloads: 563,850 | Endorsements: 13,298💡 Notes
By Senna | v3.0 | 13,298 endorsements
🎯 Tips & Tricks
Make sure you install BepInEx first and run the game once to generate the necessary folders before adding Nautilus and this mod.
After installing, check the in-game options or mod config files to confirm the slot counts are active—some mods require a game restart.
If you're using other vehicle mods, test compatibility in a creative save to avoid conflicts with upgrade slots.
🔧 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
- Huge community trust: 13,298 endorsements and 563,850 downloads show it's a go-to mod.
- Straightforward slot expansion—no complicated config, just more room for upgrades.
- Works across all three major vehicles, so you get consistent benefits no matter what you pilot.
👎 Cons
- Requires BepInEx and Nautilus, so you'll need to set up the modding framework first.
- Last updated August 2025—might not be compatible with future game patches, so watch for updates.
- No detailed instructions in the description, so you'll need to know how to install BepInEx mods.