The campaign is meant to be a so-called "homebrew," using DnD rules, instead of a stand-alone tabletop Fallout game. The map of the Fallout ... of Cthulhu is a better alternative to DnD to start ...

That seems very strange given the popularity of the Amazon TV show, but there are always alternatives. The fan made Fallout .

However, early in development, Bethesda didn’t want to invest in a massive map for the first Fallout MMO. Eventually, the team was given the go ahead to make a map four times bigger than Fallout ...