For the scariest Haunted Houses in Oklahoma check our list of Halloween Attractions. You will find haunted hospitals, prisons, mansions filled with spirits, haunted hayrides, corn mazes and frightful forests full of evil spirits all with only one thing in mind...to make you scream. Even the haunts with costume garbed actors in paint and carrying gory props are only there for one reason...to help drive you a little bit insane. To scare you like you have never been frightened before. What else is the purpose of something called The Hex House, Scream Country Haunted Forest...which consists of over 40 deep, twisting, frightening acres, or Nightmare in the Country that offers four new chilling attractions.