
Vampirism
Take damage when you're in direct sunlight, keep to the shadows and the night to stay safe.
Description
Vampirism
Multiplayer compatible!
_If you enjoy my work, please consider donating to my [completely optional tip jar](https://ko-fi.com/robb4)._
A new twist on playing Satisfactory.
Standing in direct sunlight heats you up, and if you get too hot, you'll start taking damage.
Staying in the shadows will cool you down.
Once the sun goes down you are free to roam without fear of overheating until the next day.
A meter displaying your heat level appears above your health bar when you have heat.
The shade provided by small plants and leaves is not sufficient protection, but your own buildings, glass windows, large creatures, as well as larger terrain elements such as rocks and the trunks of trees, will protect you. So will swimming in water.
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<video controls="" width="720" height="405">
<source src="https://raw.githubusercontent.com/budak7273/Vampirism/main/ModpageAssets/Demo.mp4" autoplay="false" controls="true" type="video/mp4">
</video>
Upon first installing the mod (or starting a new game)
the world will be set to midnight so the first day is not unplayable,
especially if you chose to not skip the tutorial.
You can disable this in the [mod savegame settings](https://docs.ficsit.app/satisfactory-modding/latest/ForUsers/ConfiguringMods.html#_mod_savegame_settings)
if you don't like it.
The check to determine if you're in sunlight draws from your head to the position of the sun, so your "safe areas" will change as the time of day changes and shadows move.

Consider using the [SkyUI mod](https://ficsit.app/mod/SkyUI) to modify the length of days and nights to your preference.
Configuration
In the "Mod Savegame Settings" menu for each world, you can configure:
- How many seconds of "heat tolerance" you have before you start taking damage
- How much damage you take when overheating, and how frequently it is applied
- Whether or not the game is set to night when you start a new world.
Maybe™ Future Plans
- Some sort of health stealing from fauna mechanic
- Configurable cooling down rate
- Upgrades to allow you to stay in the sun for longer
Credits
<!-- cspell:ignore Erufuun -->
- Erufuun for the idea for the mod
- D4rk for implementation and optimization ideas, as well as figuring out how the "take damage reticle" works
- Icon by Deantendo. Icon asset attribution: <https://www.flaticon.com/free-icon/fangs_249417>
Versions
How to Install Vampirism on Your Server
Order Satisfactory Server
Order a Satisfactory server with at least 4 GB RAM (6 GB recommended). For multiplayer: per 4 players.
Install Mod
Open the mod manager in the dashboard and search for "Vampirism". Installation dependencies are installed automatically.
Restart Server
Restart the server so the mod is loaded. Players need to have the mod installed locally as well.
Frequently Asked Questions
Vampirism not working after update – what to do?
After a Satisfactory update, mods need to be updated. Check ficsit.app whether Vampirism has been updated for the new game version. With Mado Hosting: open the mod manager and click "Update All". If the mod hasn't been updated yet, temporarily remove it so the server starts.
Vampirism causing crashes in multiplayer – solution
Most common cause: all players must have exactly the same mod version installed. Check server logs for "ModMismatch" or "Version Conflict". Ensure all players use Vampirism v1.2.0 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.
Is Vampirism compatible with other Satisfactory mods?
Vampirism uses the Satisfactory Mod Loader (SML). Generally, SML-based mods are cross-compatible, but mods modifying the same game systems can cause conflicts. Test new mod combinations on a backup save. The Mado dashboard automatically detects known conflicts and warns you.
Rent Vampirism Server
Play Vampirism on your own Satisfactory server with mod support.
Mod Information
- Author
- Robb
- Latest Version
- v1.2.0
- Created
- September 10, 2023
- Last Updated
- July 8, 2026
- Source Code
- GitHub →