If the player has both, the Sim will turn into the Dark Form to perform vampire actions - even their own walk style. Vampires also can have two forms: regular and dark. Players can also go the traditional route by feeding upon other Sims as they sleep, or just ask them. Vampire Sims can find different varieties of Plasma along with packs for a quick fix, or through Plasma Fruit which can be grown. In the pack, vampires have been built-out more than ever, with each harboring motives along with the all important need for Plasma, which is what vampires drink. Today, EA announced The Sims 4 Vampires Game Pack, coming later this month. And no, we don't mean supernatural in the Sam and Dean sense. The Sims 4 is about to become even more supernatural.