Elisting a feeling of terror, dread, and primal fear, The Guide to the Cult of Shub-Niggurath is an excellent addition to any game that is looking to truly implant that sense of occult gore horror. With inspiration from Lovecraft, Hellraiser, Spawn and Hellboy, this supplement adds new gameplay mechanics that flesh out (pun intended) the utilization of the occult in RPGs. For instance, the Larvel Progenitor option for the Alchemist is both disgusting and interesting at the same time, a halfway point between Maggot from the X-Men, and Venom. Overall, definitely a need if you are looking to add a heaping pile of morbid to your game.
[4 of 5 Stars!]