- In v1.03 (latest as of 2/11/2026), the "High FPS Physics Fix" is included, meaning steps 5-6 are no longer necessary.
- Purchase Fallout 4: GOTY from GOG.com. Purchase (add) Fallout London from GOG.com. You now have both of these in your GOG library.
- Download and install GOG Galaxy. It just makes this whole thing easier.
- In GOG Galaxy, install Fallout 4: GOTY. Once completed, run it (at least) once to the title screen.
- In GOG Galaxy, install Fallout London (which just installs the mod installer). Once completed, run it and use the installer to install the mod to the Fallout 4: GOTY folder (typically
C:\Program Files (x86)\GOG Galaxy\Games\Fallout 4 GOTY).