You have the ability to enter the dream world: a world of vivid hallucinations and horrific monsters. Draw power from the Nightmares that live there, but do not let them corrupt you. For there are other Dreamers seeking power this night, and there is only room for one to escape from the realm of Nightmares.
Should you become corrupted and turn into a Nightmare yourself, you must hunt down the other Dreamers and consume their power. When the night is over, only one Dreamer or Nightmare will be left standing.