About Fenrir Curse
From ThunderstoreTransform into a fearsome Fenring at night after being bitten by one.
Fenrir Curse
Embrace the beast within. Fenrir Curse allows you to permanently transform into a fearsome Fenring when the sun goes down, completely changing how you fight and traverse the world of Valheim.
Features
- The Curse of the Beast: The curse is transmitted directly by surviving an attack from a Wolf, Fenring, Ulv, or Cultist. Once infected, you gain the ability to transform into a Wolf by pressing H, and into a Fenring at night by pressing G.
- Beast Unleashed: As a Fenring, you experience a massive boost to your movement and jump speed, complete immunity to fall damage, and a powerful claw attack to tear your enemies apart.
- Empower the Curse: Seek the Bog Witch to empower the curse (speak to someone in her house).
- Whiteberry: Once your curse is empowered, the Bog Witch sells the Whiteberry (300 coins). Eat it and your Cultist form turns pale: a cosmetic change only, attacks and animations stay the same.
- Compendium page: While you are infected, a page in the Compendium explains the curse and your transformations.
- Reversible Curse: Craft the Purifying Potion at the Cauldron to cleanse your blood and return to your human form permanently (if you really want to cure the curse and go back to being a boring human, that is).
Gamepad
- Transform and howl: hold R3 to open the radial menu and pick the Fenrir Curse group. It holds your beast form (G), your Wolf or Ulv form (H) and, while you are a Fenring or a Cultist, the Howl (O).
- Attacks in beast form: RT is the left-click attack, LT the right-click attack (the Cultist breathes fire while LT is held), and the secondary attack button is the middle-click attack.
Disclosure
This mod utilizes only in-game assets and does not use any external components. The code was written and debugged with an AI agent.
Development & Feedback
This is the first stable release of Fenrir Curse, but the mod is actively in development! We plan to add more gameplay elements and refine the mechanics in future updates. Any feedback, bug reports, or suggestions for new features are more than welcome.
Admin & Debug
- Curseberry: An admin-only debug item used to manually trigger the infection for testing purposes.
Items & Crafting
- Purifying Potion: Cures the curse.
- Recipe: 1 Mead Base: Frost Resist, 5 Onions, 1 Silver. Crafted at the Cauldron.
Installation
- Install BepInExPack Valheim and Jotunn.
- Extract the
Fenrir_Cursefolder into yourBepInEx/pluginsdirectory. FenrirCurse.dllis the only file needed. The oldfenrirbundleasset file is no longer used and can be deleted.
Support
Join the Discord for help, feedback and bug reports: https://discord.gg/jJzuKBZNC
If you want to support my work or make requests, you can use my Ko-fi link.
Credits
- Programming & Logic: Nandor
Changelog
v1.2.0
- Added the Whiteberry, sold by the Bog Witch to players with an empowered curse. Eating it changes the Cultist form's look (cosmetic only). The Purifying Potion removes it along with the curse.
- Added a Compendium page for infected players, explaining the curse, the transformations and where to look for help.
- Added the Discord link to the README.
v1.1.1
- Updated for Valheim 1.0 and Jotunn 2.30.0.
- Multiplayer: transformations are now synced. Other players see your beast, its attacks, its sounds and the Cultist's flames. Every player needs the mod.
- Gamepad support: transformations and Howl in the radial menu, beast attacks on the controller's attack buttons.
Bugfixes
- Transforming no longer casts your real Forsaken Power and puts it on cooldown.
- Beast attacks no longer fire while the inventory, a chest, the map, the chat or a menu is open.
- The Wolf form's speed buff no longer stays after returning to human form.
- The Cultist's flames no longer keep burning if you turn back mid-attack.
- Dying while transformed no longer makes the next G press revert instead of transform.
v1.1.0
- Added Wolf transformation (press H).
- The curse can now be transmitted by Wolves, Ulvs, and Cultists.
- Added interactions with the Bog Witch to empower the curse.
- Added Disclosure section.
v1.0.1
Balance
- Added a new debuff while transformed: you now take 50% more spirit damage.
Bugfixes
- Fixed English translation issues.
- Fixed the Purifying Potion to cure the curse; it now works correctly.
Highlights
From source dataLoaders
Runs on BepInEx.
Footprint
Rated a light load on a server.
Last update
Its author last shipped an update 28d ago.
Fenrir Curse on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Valheim servers, for BepInEx servers. We download it from Thunderstore, place it, and restart the server.
- Server type needed
- BepInEx
- Server load
- light
- Smallest plan we suggest
- Valheim — 4 GB (4 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.2.0, released 2026-10-07
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| BepInEx |
From 5 recorded builds of Fenrir Curse.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.2.0 | 2026-10-07 | n/a | BepInEx |
| 1.1.1 | 2026-09-13 | n/a | BepInEx |
| 1.1.0 | 2026-07-21 | n/a | BepInEx |
| 1.0.1 | 2026-07-20 | n/a | BepInEx |
| 1.0.0 | 2026-07-19 | n/a | BepInEx |
Dependencies
- Required: BepInExPack Valheim
- Required: Jotunn
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Fenrir Curse on a Valheim server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogGameplay & overhauls
New mechanics, content and overhauls that change how the game plays.
Compatibility
- Game
- Valheim
- Loaders
- BepInEx
- Requires
- One-click install needs a BepInEx server.
Verified at the source
- ✓ThunderstoreOfficial listing, checked 2026-10-08Open ↗
- ✓AuthorNandor, as published on Thunderstore
- ✓LicenseNot published by the sourceFree






