Thir13en Ghosts
Arthur and his two children inherit his uncle's estate: a glass house that serves as a prison to twelve ghosts. When the family, accompanied by a nanny and an attorney, enter the house they find themselves trapped inside an evil machine 'designed by the Devil and powered by the dead' to open the Eye of Hell. Aided by a ghost hunter and his rival, a ghost rights activist out to set the ghosts free, the group must do what they can to get out of the house alive.
The film is explicitly built around supernatural fear and a haunted house with malevolent ghosts; fear, dread, and escape are central to the viewing experience. While there is some family drama and exposition, removing the horror elements would fundamentally alter the film's identity.
Best for viewers looking for a atmosphere-heavy and low-gore horror movie.
Movies with a similar horror experience.