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Fallout 4Modding tools

F4SE — Fallout 4 Script Extender

An extender used by Fallout 4 plugin mods; select the build matching your installed runtime.

Fallout 4
Bethesda Game Studios / Bethesda Softworks · Fallout 4

Installation

  1. Close the game and back up saves and your current mod configuration.
  2. Check the game executable’s version and store, such as Steam or GOG.
  3. Download its specific extender build and follow the included readme’s file placement.
  4. Launch with the extender loader, check logs, then add plugins targeting the same runtime.

Removal · recovery

  1. Disable plugins depending on the extender first.
  2. Follow the readme’s removal instructions and restore your original launch options and base-game executable.