Horror films seek to elicit negative emotions in viewers by playing on primal fears. They often include startling scenes and may overlap with fantasy, supernatural, and thriller genres. A horror film trailer typically features blood, screaming, death, crime, murder, eerie music, weapons, masked or threatening characters, ghosts, dark lighting, and isolated locations to set an ominous tone. While analyzing genre conventions allows one to produce a horror trailer, creating a truly scary and successful film on a small budget that could compete with major studio horrors may prove challenging.