Achtung! Cthulhu 2d20: Gamemaster's Guide

Welcome to the Secret War in this fast-paced pulp-influenced rollercoaster of an RPG which nimbly mixes the sanity-challenging terror of Lovecraftian cosmic horror, with the chaos and heroism of World War II. As a gamemaster you will bring to life this pulp-influenced world of brave Allied heroes and dauntless two-fisted adventure, guiding the heroic actions of players while also directing the twisted might of the Nazi occult: the Cult of the Black Sun, who wield foul magic and summon captive horrors and Nachtwlfe, their rivals who place their trust in Atlantean technology, weird science, and strange wonder weapons. Will your players prevail against all odds, or will they, like so many others before, fall to the malign influence of the Mythos? That is your story to shape and tell.