What are the most niche/innovative features in horror games?
Looking for games that implement a feature, item, weapon, etc that isn’t seen in every survival horror game and might be extremely innovative.
For example:
Eternal Darkness’ use of Sanity Effects that make you think the tv or game are broken
Resident Evil’s use of typewriters to save progress
Silent Hill Origins’ use of mirrors to travel between the otherworld and fog/normal world
Fatal Frame’s use of the Spirit Camera as a weapon
Tormented Souls’ use of video tapes to go back in the past to use items that would take days to have an effect