The Obligatory Cthulhu Set features crazy Cthulhu cultists, fishy Innsmouth locals, horrifying Elder Things, and good-old Miskatonic University members (the Fightin' Cephalopods) thrust into the chaos of Smash Up! This set also introduces a new card type ('Madness'), that each of these groups use to various effects. But, remember... Madness brings you power - for a price!