Need for Sleep
🟡 Updated this year⚠️ 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
- 👍 1.6% endorsement rate — high engagement, a strong quality signal
- ✅ Updated 309 days after the latest game patch — actively maintained
- 🏆 #208 of 456 Gameplay mods in this game by downloads
📋 About This Mod
This mod makes you suffer consequences if you stay awake for too long. You also do not need a bed to sleep. You can sleep anywhere you want. To fall asleep look at the ground at your feet and press "Left hand" button when you see the prompt. When sleeping inside your base on the floor or inside your life pod, your sleep duration will increase by 25%. When sleeping outside, your sleep duration will increase by 50%. In the mod options you can set number of hours you need to sleep. By default you have to sleep 6 hours every 24 hours. After you stay awake for longer than 18 hours you will start to suffer sleep deprivation.
How this mod simulates sleep deprivation:
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[]The longer you stay awake the blurrier your vision is.
[
]The longer you stay awake the slower you move. You will not lose more than 50% of your max speed.[]Turning around is slower.
[]Your acceleration when you start walking, sprinting, swimming is not instant.
Affects of sleep deprivation are disabled in creative mode. Drinking coffee will reduce sleep deprivation effects for an hour.
If you are using SubmersedVR download v2. 0.
This mod adds some new text. If your game language is not English you may want to translate it. Localization files are in "Subnautica\BepInEx\plugins\NeedForSleep\Localization" folder. If there is no localization flie for your language, copy and paste English.json. Rename the new file so it matches your language. Open folder "Subnautica\Subnautica_Data\StreamingAssets\SNUnmanagedData\LanguageFiles" to see correct language file names. Open the new file and translate the text. You can upload translated file to Nexus as another mod. If you post it here, I will add it to the mod.
The mod was tested with current Steam version of the game.
Source code
Need for Sleep is a gameplay mod that introduces a sleep mechanic, requiring the player to sleep to avoid sleep deprivation. With 46 endorsements and 2,893 downloads, it's a niche addition for players seeking more survival realism. Last updated in August 2026, it remains relatively recent.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Tight focus on one mechanic—does exactly what it says
- Decent download count (2,893) shows some interest
- Recently updated (August 2026), so likely works with current game version
⚠️ Cons
- Low endorsement ratio (46) suggests mixed reception or niche appeal
- No detailed description—unclear how the mechanic works or if it's configurable
- Potential compatibility issues with other gameplay mods not addressed
For survival enthusiasts who want an extra layer of challenge and realism. If you're into hardcore survival mechanics, this could be a nice addition. Skip if you prefer fast-paced action without managing basic needs.
💡 Beginner Tips
- Check if the mod requires a new save or works with existing ones—many gameplay mods need a fresh start.
- Look for a config file or in-game settings to adjust sleep deprivation rates if available.
- Test in a separate save first to see how the mechanic feels before committing.
📊 Mod Details
- Game
- Subnautica Mods
- Author
- qqqbbb
- Version
- 2.2.0
- Downloads
- 2,893
- Endorsements
- 46
- Category
- Gameplay
- Created
- 4/9/2025
- Updated
- 8/8/2026
🧩 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.
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