The Possessed Grounds Lot Challenge will turn any residential lot into a place where ghosts, and maybe some others from the netherworld, come to haunt. There are specialized buffs for several different types of Sims. For instance, a vampire Sim won’t react to the sight of ghosts in the same way an alien Sim would. Before you ask, yes, this lot challenge adds even more fun to the Haunted House residential venue available with the Paranormal SP.