Horror movies are a genre of film designed to elicit fear, suspense, and excitement from the audience. They often feature supernatural elements, such as ghosts, monsters, or psychological threats, and may include graphic violence or intense situations. Common themes include survival, the unknown, and the battle between good and evil. These films often use techniques like eerie music, dark lighting, and unexpected plot twists to create tension. Iconic examples of horror movies include Psycho, The Shining, and Halloween. The genre has a dedicated fan base and has evolved over the years, incorporating various sub-genres like slasher, supernatural, and psychological horror.