Pulp Cthulhu presents background and adventures for the decade of the 1930s, melding the classic Chaosium Call of Cthulhu setting with the new Call of Cthulhu d20 rules from Wizard's of the Coast. It provides guidelines for the use of cults, mad scientists, and pulp heroes in a classic game of Lovecraftian Horror. It explains how to create secret societies of Investigators devoted to fighting the Mythos, and details three such groups, ready-made for dropping into any ongoing Call of Cthulhu campaign that has reached the fateful year of 1929. Finally, it provides three adventures involving pulp action in 1930s settings, including Shanghai.