The horror genre has given birth to many sub-genres and hybrids of these various types. Each has its own unique themes, but all of them share one common goal: FEAR.
Found Footage
The point-of-view takes place from the perspective of a camera. Famous titles include The Blair Witch Project and Rec.
Lovecraftian
Focuses on cosmic horror. Monsters are beings beyond our comprehension. Often incorporates science fiction, including horror classics like Alien and The Thing.
Psychological
This sub-genre focuses on the horror of the mind. What is real? What is madness? Two great psychological horror movies are Silence of the Lambs and Jacob’s Ladder.
Science Fiction
Focuses on the horror and consequences of technology. Monsters are often aliens or machines. Two great sci-fi horror movies are The Blob and War of the Worlds.
Slasher
The monster is a psychopath with a penchant for bloody murder. Often focuses on the punishment of promiscuous teenagers. Popular movies include Halloween and A Nightmare on Elm Street.
Supernatural
Focuses on the afterlife. Primary creatures include ghosts and demons. Great titles include Poltergeist and The Exorcist.
Torture
Similar to slasher; focuses on the punishment of people. The villain takes pleasure in the physical and psychological torment of victims. Famous movies include Hostel and Saw.
Vampire
One of the oldest horror sub-genres in which icons like Dracula feed on human blood. Some of the best vampire movies include Nosferatu and Interview with the Vampire.
Werewolf
When a full moon is out, beware of these beastly shape-shifters. The best werewolf movies include An American Werewolf in London and The Wolf Man.
Zombie
A group of survivors is usually attacked by a horde of flesh-eating undead. Night of the Living Dead is considered one of the best zombie movies along with 28 Days Later... and Shaun of the Dead.