Author: YouDied
Version: 1.0.0
Zero configuration. Install and forget — your character takes absolutely no fall damage.
Valheim tracks the highest altitude a character reaches while airborne in a field called m_maxAirAltitude. When the character lands, the engine subtracts the landing Y position from that peak to get the fall distance, then applies damage.
This mod patches Character.UpdateGroundContact via Harmony. Every frame, it resets m_maxAirAltitude to the character's current Y position, so the engine always sees a fall distance of zero → no damage.
Open NoFallDamage.csproj in a text editor and update <ValheimDir> to your Valheim install path if it differs from the default.
Build from the project folder:
dotnet build -c Release
The compiled DLL ends up in bin\Release\netstandard2.1\NoFallDamage.dll.
Copy NoFallDamage.dll into:
<ValheimDir>\BepInEx\plugins\
Launch Valheim. You'll see this line in BepInEx\LogOutput.log confirming it loaded:
[Info : No Fall Damage] No Fall Damage loaded — fall damage disabled.
Delete NoFallDamage.dll from the BepInEx\plugins\ folder.