From the introduction: Welcome To The Show: Creature Feature is a source book of monstrous applications for the Nightmare Worlds role playing game (and you will need Nightmare Worlds: Corebook to use the content of this book). First and foremost a monster guide, this book reintroduces aspects of the creature section first presented in the core book, but also expands upon it with a host of new creature talents and skills. Abilities such as possession are covered here for the first time, along with skills meant for animalistic terrors out for blood. We also provide rules for the creation of your own nightmare creatures, from start to finish. With them one can create any number of fresh new terrors for their campaign.