This document provides background information and conventions for different horror subgenres, including supernatural, slasher, splatter, psychological and survival horrors. It summarizes key films for each subgenre. For supernatural horrors, it discusses how films like The Conjuring are based on real paranormal investigations and often feature families moving into haunted homes. Slasher films like Texas Chain Saw Massacre typically involve psychopathic killers murdering with bladed weapons. Splatter films like Halloween focus heavily on graphic violence and gore. Psychological horrors like The Blair Witch Project aim to disturb and confuse viewers through ambiguous plots and unreliable characters. Survival horrors depict isolated groups attempting to survive apocalyptic events like viruses that cause zombie outbreaks.