: The mod files take up approximately 34GB , and a clean installation of Fallout 4 requires about 30GB , for a total of roughly 64GB .

: You must own Fallout 4: Game of the Year Edition or the base game with all official DLCs (excluding the High Resolution Texture Pack, which is optional).

: It is highly recommended to start with a fresh, unmodded installation of Fallout 4 to avoid file conflicts. Step-by-Step GOG Installation Guide

Installing on the GOG version of Fallout 4 is the most straightforward way to experience this massive total conversion mod, as the GOG release is inherently compatible with the mod's specific version requirements. Unlike the Steam version, which requires a manual downgrade to undo Bethesda's "Next-Gen" update, the GOG version of Fallout 4: GOTY Edition provides the necessary 1.10.163 files right out of the box. Preparation and Requirements