72		The Thing (Horror, Mystery, Sci-Fi, 2011)
65		X the Unknown (Horror, Sci-Fi, 1956)
64		Extraterrestrial (Horror, Sci-Fi, 2014)
60		The Devil Bat (Horror, Sci-Fi, 1940)
57		The Puppet Masters (Horror, Sci-Fi, Thriller, 1994)
55		Creature (Horror, Sci-Fi, 1985)
55		Tarantula (Horror, Sci-Fi, 1955)
55		Project: Metalbeast (Horror, Sci-Fi, 1995)
55		Shivers (Horror, Sci-Fi, 1975)
55		The Deadly Spawn (Horror, Sci-Fi, 1983)
55		Metamorphosis: The Alien Factor (Horror, Sci-Fi, 1990)
55		Area 51 (Horror, Sci-Fi, Thriller, 2015)
55		Pitch Black (Horror, Sci-Fi, 2000)
55		Not of This Earth (Horror, Sci-Fi, 1957)
52		Dark Breed (Action, Horror, Sci-Fi, 1996)
52		Alien (Horror, Sci-Fi, 1979)
51		Island of Lost Souls (Horror, Sci-Fi, 1932)
50		The Devil Commands (Horror, Sci-Fi, 1941)
50		It Came from Outer Space (Horror, Sci-Fi, 1953)
50		Goke, Body Snatcher from Hell (Horror, Sci-Fi, 1968)
50		The Man Without a Body (Horror, Sci-Fi, 1957)
50		The Brain Leeches (Horror, Sci-Fi, 1978)
50		Alien Prey (Horror, Sci-Fi, 1977)
50		The Brain (Horror, Sci-Fi, 1988)
50		Donovan's Brain (Sci-Fi, Horror, 1953)
50		The Quatermass Xperiment (Horror, Sci-Fi, 1955)
50		The Colossus of New York (Horror, Sci-Fi, 1958)
50		I Married a Monster from Outer Space (Horror, Sci-Fi, 1958)
50		The Blob (Horror, Sci-Fi, 1958)
50		The Brain That Wouldn't Die (Horror, Sci-Fi, 1962)
50		The Invisible Man's Revenge (Horror, Sci-Fi, 1944)
50		Alien Factor 2: The Alien Rampage (Horror, Sci-Fi, 2001)
50		Seedpeople (Horror, Sci-Fi, 1992)
50		Queen of Blood (Horror, Sci-Fi, 1966)
50		Xtro (Horror, Sci-Fi, 1982)
49		Independence Day (Action, Adventure, Sci-Fi, 1996)
49		Hunting Grounds (Horror, Sci-Fi, 2009)
49		Horror Hotel the Movie (Horror, Sci-Fi, 2016)
48		Driller (Horror, Sci-Fi, 2006)
47		Species II (Action, Horror, Sci-Fi, 1998)
47		The Return of Doctor X (Horror, Mystery, Sci-Fi, 1939)
47		The Faculty (Horror, Mystery, Sci-Fi, 1998)
46		Cloverfield (Action, Horror, Sci-Fi, 2008)
46		The Creature Below (Horror, Sci-Fi, 2016)
46		Invasion of the Body Snatchers (Horror, Sci-Fi, 1956)
46		Quarantine (Horror, Sci-Fi, Thriller, 2008)
46		Another World (Action, Horror, Sci-Fi, 2014)
45		Invaders from Mars (Horror, Sci-Fi, 1986)
45		The Brain Eaters (Sci-Fi, Horror, 1958)
45		Still Waters (Horror, Sci-Fi, 2011)
45		Invisible Invaders (Sci-Fi, Horror, 1959)
45		Without Warning (Sci-Fi, Horror, 1980)
45		Storage 24 (Horror, Sci-Fi, 2012)
45		Dead Season (Horror, Sci-Fi, 2012)
45		The Prometheus Project (Horror, Sci-Fi, 2010)
45		Demon Seed (Horror, Sci-Fi, 1977)
45		Braincell (Horror, Sci-Fi, 2010)
45		The Lazarus Effect (Horror, Sci-Fi, Thriller, 2015)
45		The Dark (Horror, Sci-Fi, 1979)
45		I Was a Teenage Frankenstein (Horror, Sci-Fi, 1957)
45		Killer School Girls from Outer Space (Horror, Sci-Fi, 2011)
45		Rat Scratch Fever (Horror, Sci-Fi, 2011)
45		Attack of the 50 Foot Woman (Horror, Sci-Fi, 1958)
45		Moontrap (Horror, Sci-Fi, 1989)
45		Hand of Death (Horror, Sci-Fi, 1962)
45		Plan 9 from Outer Space (Horror, Sci-Fi, 1959)
45		The Frozen Dead (Sci-Fi, Horror, 1966)
45		Unearthed (Horror, Mystery, Sci-Fi, 2007)
45		Nightbeasts (Horror, Sci-Fi, 2010)
45		Phantom from Space (Horror, Sci-Fi, 1953)
45		Not Like Us (Horror, Sci-Fi, 1995)
45		The Thing from Another World (Horror, Sci-Fi, 1951)
45		Altered (Horror, Sci-Fi, Thriller, 2006)
45		The Earth Dies Screaming (Horror, Sci-Fi, 1964)
45		Growth (Horror, Sci-Fi, 2010)
44		Brainjacked (Horror, Sci-Fi, 2009)
44		TapeWorm (Horror, Sci-Fi, 2009)
44		The Frankenstein Theory (Horror, Sci-Fi, 2013)
44		Children of the X-Files (Horror, Sci-Fi, 2009)
44		Debug (Horror, Sci-Fi, 2014)
44		The Sunderland Experiment (Horror, Sci-Fi, 2014)
44		Orn (Horror, Sci-Fi, 2009)
44		Frankenstein's Army (Horror, Sci-Fi, 2013)
44		Edge of Tomorrow (Action, Adventure, Sci-Fi, 2014)
44		The Devil in White (Horror, Sci-Fi, 2014)
44		The Thing (Horror, Mystery, Sci-Fi, 1982)
44		Silent Night, Zombie Night (Horror, Sci-Fi, 2009)
44		13 Eerie (Horror, Sci-Fi, 2013)
44		The Drift (Horror, Sci-Fi, 2014)
44		Scintilla (Horror, Sci-Fi, 2014)
44		Hungerford (Horror, Sci-Fi, 2014)
43		Predator (Action, Horror, Sci-Fi, 1987)
43		RWD (Horror, Sci-Fi, 2015)
43		Harbinger Down (Horror, Sci-Fi, 2015)
43		The Zombie Diaries (Horror, Sci-Fi, 2006)
43		Mark of the Damned (Horror, Sci-Fi, 2006)
43		Out of State (Horror, Sci-Fi, 2006)
43		The Diabolical (Horror, Sci-Fi, 2015)
43		The Day the Earth Stood Still (Drama, Sci-Fi, Thriller, 2008)
43		The Shells (Horror, Sci-Fi, 2015)
43		She-Demons of the Black Sun (Horror, Sci-Fi, 2006)
43		Dark Paradox (Horror, Sci-Fi, 2007)
43		Subject 87 (Horror, Sci-Fi, 2007)
42		The Gamma People (Drama, Horror, Sci-Fi, 1956)
42		Body Snatchers (Sci-Fi, Horror, Thriller, 1993)
42		Star Party (Horror, Sci-Fi, 2005)
42		DeepStar Six (Action, Horror, Sci-Fi, 1989)
42		Alien³ (Action, Horror, Sci-Fi, 1992)
42		Firestarter (Action, Horror, Sci-Fi, 1984)
42		Purple Glow (Horror, Sci-Fi, 2005)
42		Five Million Years to Earth (Horror, Mystery, Sci-Fi, 1967)
42		Lifeforce (Action, Horror, Sci-Fi, 1985)
41		The Purge: Anarchy (Action, Horror, Sci-Fi, 2014)
41		Alien Raiders (Action, Horror, Sci-Fi, 2008)
41		The Bone Snatcher (Horror, Sci-Fi, 2003)
41		Chemical Wedding (Horror, Mystery, Sci-Fi, 2008)
41		Alien Abduction (Horror, Sci-Fi, Thriller, 2014)
41		Subterano (Horror, Sci-Fi, 2003)
41		Cabin Fever: Patient Zero (Horror, Sci-Fi, Thriller, 2014)
41		Dr. Jekyll and Mr. Hyde (Horror, Sci-Fi, 1931)
41		Blood of the Beast (Horror, Sci-Fi, 2003)
40		Rabid (Horror, Sci-Fi, 1977)
40		Terror of Frankenstein (Horror, Sci-Fi, 1977)
40		I Come in Peace (Action, Crime, Horror, Sci-Fi, 1990)
40		Embryo (Horror, Sci-Fi, 1976)
40		Regenerated Man (Horror, Sci-Fi, 1994)
40		Future Shock (Sci-Fi, Horror, 1994)
40		Horror Express (Horror, Sci-Fi, 1972)
40		The Man with Two Heads (Horror, Sci-Fi, 1972)
40		Pulse (Horror, Sci-Fi, 1988)
40		Dr Jekyll & Sister Hyde (Horror, Sci-Fi, 1971)
40		The Toy Box (Horror, Sci-Fi, 1971)
40		Willard (Horror, Sci-Fi, 1971)
40		The Fly II (Horror, Sci-Fi, 1989)
40		Garden of the Dead (Sci-Fi, Horror, 1972)
40		The Monster Maker (Horror, Sci-Fi, 1944)
40		Sssssss (Horror, Sci-Fi, 1973)
40		The Mutations (Horror, Sci-Fi, 1974)
40		Invasion of the Bee Girls (Horror, Sci-Fi, 1973)
40		Slugs (Horror, Sci-Fi, 1988)
40		The Asphyx (Horror, Sci-Fi, 1972)
40		The Creeping Flesh (Horror, Sci-Fi, 1973)
40		The Jungle Captive (Horror, Sci-Fi, 1945)
40		The Alien Factor (Horror, Sci-Fi, 1978)
40		The Devil-Doll (Sci-Fi, Horror, 1936)
40		Deadly Eyes (Horror, Sci-Fi, 1982)
40		The Man Who Lived Again (Horror, Sci-Fi, 1936)
40		Forbidden World (Horror, Sci-Fi, 1982)
40		Swamp Thing (Horror, Sci-Fi, 1982)
40		From Beyond (Horror, Sci-Fi, 1986)
40		Island Claws (Horror, Sci-Fi, 1980)
40		The Orbitrons (Horror, Sci-Fi, 1990)
40		Nightmares (Horror, Sci-Fi, 1983)
40		C.H.U.D. (Horror, Sci-Fi, 1984)
40		The Terror Within II (Horror, Sci-Fi, 1991)
40		Death Warmed Over (Horror, Sci-Fi, 1984)
40		The Arrival (Horror, Sci-Fi, 1991)
40		Project 12 (Sci-Fi, 2012)
40		The Lawnmower Man (Horror, Sci-Fi, 1992)
40		Spasms (Horror, Sci-Fi, 1983)
40		Scared to Death (Horror, Sci-Fi, 1980)
40		Dr. Jekyll and Mr. Hyde (Horror, Sci-Fi, 1941)
40		The Terror Within (Horror, Sci-Fi, 1989)
40		Invasion of the Body Snatchers (Horror, Sci-Fi, 1978)
40		Captive Wild Woman (Horror, Sci-Fi, 1943)
40		The Medusa Touch (Horror, Sci-Fi, 1978)
40		The Hidden (Action, Crime, Horror, Sci-Fi, 1987)
40		Ticks (Horror, Sci-Fi, 1993)
40		Kingdom of the Spiders (Horror, Sci-Fi, 1977)
40		The Visitor (Horror, Sci-Fi, 1979)
40		The Corpse Vanishes (Horror, Sci-Fi, 1942)
40		Humanoids from the Deep (Horror, Sci-Fi, 1980)
40		The Children (Horror, Sci-Fi, 1980)
40		Alligator (Horror, Sci-Fi, 1980)
40		Syngenor (Horror, Sci-Fi, 1990)
40		The Curse (Sci-Fi, Horror, 1987)
40		The Brood (Horror, Sci-Fi, 1979)
40		Prophecy (Sci-Fi, Horror, 1979)
40		Shadowzone (Horror, Sci-Fi, 1990)
40		Night of the Scarecrow (Horror, Sci-Fi, 1995)
40		The Manster (Horror, Sci-Fi, 1959)
40		The Wasp Woman (Horror, Sci-Fi, 1959)
40		Rejuvenatrix (Horror, Sci-Fi, 1988)
40		The Alligator People (Horror, Sci-Fi, 1959)
40		Day the World Ended (Horror, Sci-Fi, 1955)
40		Lone Wolf (Horror, Sci-Fi, 1988)
40		The Monster of Piedras Blancas (Horror, Sci-Fi, 1959)
40		Transformations (Horror, Sci-Fi, 1988)
40		Aberration (Horror, Sci-Fi, 1997)
40		The Leech Woman (Horror, Sci-Fi, 1960)
40		War of the Satellites (Horror, Sci-Fi, 1958)
40		The Unknown Terror (Horror, Sci-Fi, 1957)
40		Bride of the Monster (Horror, Sci-Fi, 1955)
40		Ravager (Horror, Sci-Fi, 1997)
40		Village of the Damned (Horror, Sci-Fi, 1960)
40		She Devil (Horror, Sci-Fi, 1957)
40		The Black Scorpion (Horror, Sci-Fi, 1957)
40		Monster on the Campus (Horror, Sci-Fi, 1958)
40		The Creature Walks Among Us (Horror, Sci-Fi, 1956)
40		How to Make a Monster (Horror, Sci-Fi, 1958)
40		Fiend Without a Face (Horror, Sci-Fi, 1958)
40		Attack of the Puppet People (Sci-Fi, Horror, 1958)
40		The Woman Eater (Horror, Sci-Fi, 1958)
40		Earth vs. the Flying Saucers (Action, Sci-Fi, 1956)
40		The Werewolf (Sci-Fi, Horror, 1956)
40		Halfway Home (Horror, Sci-Fi, 1998)
40		Frankenstein 1970 (Horror, Sci-Fi, 1958)
40		Blood of the Vampire (Horror, Sci-Fi, 1958)
40		She Demons (Horror, Sci-Fi, 1958)
40		The Crawling Eye (Horror, Sci-Fi, 1958)
40		The Man Who Turned to Stone (Horror, Sci-Fi, 1957)
40		The Spider (Horror, Sci-Fi, 1958)
40		The Black Sleep (Horror, Sci-Fi, 1956)
40		Attack of the Crab Monsters (Horror, Sci-Fi, 1957)
40		It! The Terror from Beyond Space (Horror, Sci-Fi, 1958)
40		The Day of the Triffids (Horror, Sci-Fi, 1962)
40		It Came from Beneath the Sea (Horror, Sci-Fi, 1955)
40		The Neanderthal Man (Horror, Sci-Fi, 1953)
40		Cameron's Closet (Horror, Sci-Fi, 1988)
40		The Maze (Horror, Sci-Fi, 1953)
40		Mimic (Horror, Sci-Fi, 1997)
40		The Monster That Challenged the World (Horror, Sci-Fi, 1957)
40		Sting of Death (Horror, Sci-Fi, 1965)
40		Hellraiser: Bloodline (Horror, Sci-Fi, 1996)
40		The Nest (Horror, Sci-Fi, 1988)
40		Deep Space (Horror, Sci-Fi, 1988)
40		Brides of Blood (Horror, Sci-Fi, 1968)
40		Aliens vs. Predator: Requiem (Action, Horror, Sci-Fi, 2007)
40		It! (Horror, Sci-Fi, 1967)
40		Enemy from Space (Sci-Fi, Horror, 1957)
40		Colony Mutation (Horror, Sci-Fi, 1995)
40		Blood Beast from Outer Space (Horror, Sci-Fi, 1965)
40		Creature from the Black Lagoon (Horror, Sci-Fi, 1954)
40		The Last Man on Earth (Horror, Sci-Fi, 1964)
40		Revenge of the Creature (Horror, Sci-Fi, 1955)
40		The Cyclops (Horror, Sci-Fi, 1957)
40		Children of the Damned (Horror, Sci-Fi, 1964)
40		The Curse of Frankenstein (Horror, Sci-Fi, 1957)
40		Battle Los Angeles (Action, Sci-Fi, 2011)
40		Target Earth (Horror, Sci-Fi, 1954)
40		Unearthly Stranger (Horror, Sci-Fi, 1963)
40		Them! (Horror, Sci-Fi, 1954)
40		Varan the Unbelievable (Horror, Sci-Fi, 1962)

Notes: Movies similar to 51, Movies like 51, Horror, Sci-Fi, Jason Connery, Tammi Arender, Randy Austin, Jillian Batherson, Bruce Boxleitner, SF, Science Fiction, SciFi, Sci Fi, Films, Video, Movie Similarities