The line between genres of cinema is often blurry and almost always pointless. People just want to know what type of film they're getting into, but attempting to divide art by the feeling it inspires will always be a matter of subjective taste. While the divisions are unclear, it's interesting to see one genre attempt tricks from another and occasionally even do them better.
Generally, the biggest difference between a horror movie and an action movie is the capability of the protagonist in comparison to the antagonist. An action movie protagonist can be faced with seemingly impossible odds and fight back to win the day, but a horror movie protagonist is typically barely able to run away. Blending the two, however, often creates something even more gripping.
Leigh Whannell's Killer AI Horror Film Is A Hidden Gem
War horror is a unique subgenre that adds a second layer of nightmarish supernatural evil to the existing unbearable torment of combat. Some accomplish that with heavily metaphorical psychological hauntings, but others go right for the throat by warping human flesh to better resemble its monstrous insides. Overlord sees a small team of US Army soldiers accidentally stumble upon an underground bunker in which Nazi scientists are hard at work creating monsters. This small unit must fight their way through, against armed Nazis and mutated super soldiers. This is unquestionably a frightening film, packed with gore and unflinching violence, but it's also a film about fighting back. There's not a lot of hidden depth, but there is a lot of fun and unrestrained violence.
In the late 2000s, screenwriters Patrick Melton and Marcus Dunstan pitched a film then called The Midnight Man. It was proposed as a prequel to the Saw
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