Of course the focus is on the graphical side, with the mod creating better looking light, shadows, and debris objects. While Fallout has utilized horror elements before (think of the haunted mansion taking cues from the Cthulhu mythos back in Fallout 3), on the whole the series prefers to be silly over scary. The “ … You can change all that and radically shift Fallout 4 into a horror game for Halloween just by installing a few simple mods.