90		The Thing (Horror, Mystery, Sci-Fi, 2011)
74		Alien (Horror, Sci-Fi, 1979)
67		Dark Breed (Action, Horror, Sci-Fi, 1996)
66		Cloverfield (Action, Horror, Sci-Fi, 2008)
65		The Bay (Horror, Mystery, Sci-Fi, 2012)
64		The Devil Inside (Horror, 2012)
62		The Thing (Horror, Mystery, Sci-Fi, 1982)
62		The Green Slime (Drama, Horror, Sci-Fi, 1968)
61		Inner Demons (Horror, Mystery, Thriller, 2014)
61		Quarantine (Horror, Sci-Fi, Thriller, 2008)
61		Extraterrestrial (Horror, Sci-Fi, 2014)
61		Willow Creek (Horror, Mystery, Thriller, 2013)
60		Evidence (Horror, Mystery, Sci-Fi, 2012)
57		Species II (Action, Horror, Sci-Fi, 1998)
57		Sinister (Horror, Mystery, 2012)
57		Pitch Black (Horror, Sci-Fi, 2000)
57		Lifeforce (Action, Horror, Sci-Fi, 1985)
56		Afflicted (Horror, Mystery, Thriller, 2013)
56		The Den (Horror, Mystery, Thriller, 2013)
56		Outpost (Action, Horror, Sci-Fi, 2008)
56		The Last Days on Mars (Horror, Sci-Fi, Thriller, 2013)
55		The Signal (Horror, Sci-Fi, Thriller, 2007)
54		V/H/S (Fantasy, Horror, 2012)
53		Surveillance (Crime, Drama, Horror, 2008)
52		Severed Footage (Horror, Mystery, Thriller, 2012)
52		Paranormal Activity (Horror, 2007)
52		The Deadly Spawn (Horror, Sci-Fi, 1983)
52		Event Horizon (Horror, Sci-Fi, Thriller, 1997)
52		Moontrap (Horror, Sci-Fi, 1989)
52		Saw 3D: The Final Chapter (Horror, Mystery, 2010)
52		Headspace (Horror, Mystery, Sci-Fi, 2005)
51		Alien Abduction (Horror, Sci-Fi, Thriller, 2014)
51		The Strangers (Horror, Mystery, Thriller, 2008)
51		As Above, So Below (Fantasy, Horror, Mystery, 2014)
49		Paranormal Activity 2 (Horror, 2010)
48		House with 100 Eyes (Horror, 2013)
48		Pontypool (Fantasy, Horror, 2008)
48		The Sacrament (Horror, Thriller, 2013)
48		Mockingbird (Horror, Thriller, 2014)
47		20 Million Miles to Earth (Fantasy, Horror, Sci-Fi, 1957)
47		Session 9 (Horror, Mystery, 2001)
47		Witchboard (Horror, Mystery, Thriller, 1986)
47		The Faculty (Horror, Sci-Fi, 1998)
46		Repo! The Genetic Opera (Horror, Musical, Sci-Fi, 2008)
46		Saw V (Horror, Mystery, 2008)
46		Woetoli (Horror, Mystery, Thriller, 2008)
46		Evil Things (Horror, Mystery, Thriller, 2009)
45		Decoder (Horror, Mystery, Sci-Fi, 1984)
45		Chernobyl Diaries (Horror, Mystery, Sci-Fi, 2012)
45		Crawlspace (Horror, Mystery, Sci-Fi, 2012)
45		Quarantine 2: Terminal (Horror, Mystery, Sci-Fi, 2011)
45		Altitude (Horror, Mystery, Sci-Fi, 2010)
44		Chemical Wedding (Horror, Mystery, Sci-Fi, 2008)
44		The Blair Witch Project (Horror, 1999)
44		Flight 7500 (Horror, Mystery, Sci-Fi, 2014)
44		Devil's Pass (Horror, Mystery, Sci-Fi, 2013)
44		A Horrible Way to Die (Drama, Horror, Thriller, 2010)
44		Grave Encounters 2 (Horror, 2012)
44		Scourge (Horror, Mystery, Sci-Fi, 2008)
43		Morgan (Horror, Mystery, Sci-Fi, 2016)
43		The Lazarus Effect (Horror, Mystery, Sci-Fi, 2015)
43		Dreamland (Sci-Fi, Horror, Mystery, 2007)
43		Chasing the Devil (Horror, 2014)
43		Unearthed (Horror, Mystery, Sci-Fi, 2007)
42		Unaware (Horror, Sci-Fi, Thriller, 2010)
42		The Tunnel (Horror, Mystery, Thriller, 2011)
42		The Ring Two (Horror, Mystery, Sci-Fi, 2005)
42		Eyes in the Dark (Horror, Sci-Fi, Thriller, 2010)
42		The Cabin in the Woods (Fantasy, Horror, Mystery, 2012)
42		Friday the 13th Part 2 (Horror, Mystery, Thriller, 1981)
42		Night School (Horror, Mystery, 1981)
42		Cube Zero (Horror, Mystery, Sci-Fi, 2004)
42		To All a Goodnight (Horror, Mystery, 1980)
41		Deliver Us from Evil (Horror, Mystery, Thriller, 2014)
41		Case 39 (Horror, Mystery, Thriller, 2009)
41		Open Grave (Horror, Mystery, Thriller, 2013)
41		Lake Mungo (Drama, Horror, Mystery, 2008)
40		Island of the Burning Damned (Horror, Mystery, Sci-Fi, 1967)
40		Five Million Years to Earth (Horror, Mystery, Sci-Fi, 1967)
40		The Body Stealers (Horror, Mystery, Sci-Fi, 1969)
40		The Vulture (Horror, Mystery, Sci-Fi, 1966)
40		The Stepford Wives (Horror, Mystery, Sci-Fi, 1975)
40		This Island Earth (Horror, Mystery, Sci-Fi, 1955)
40		Castle of Evil (Horror, Mystery, Sci-Fi, 1966)
40		Die, Monster, Die! (Mystery, Horror, Sci-Fi, 1965)
40		The Bermuda Triangle (Horror, Sci-Fi, Mystery, 1978)
40		The Supernaturals (Horror, Mystery, Sci-Fi, 1986)
40		Demonwarp (Horror, Mystery, Sci-Fi, 1988)
40		Strange Behavior (Horror, Mystery, Sci-Fi, 1981)
40		The Return of Doctor X (Horror, Mystery, Sci-Fi, 1939)
40		Impulse (Horror, Mystery, Sci-Fi, 1984)
40		Strange Invaders (Horror, Mystery, Sci-Fi, 1983)
40		Videodrome (Horror, Mystery, Sci-Fi, 1983)
40		Bug (Sci-Fi, Horror, Mystery, 1975)
40		Halloween III: Season of the Witch (Horror, Mystery, Sci-Fi, 1982)
40		Pandemic (Action, Horror, Sci-Fi, 2016)
40		Goddess of Love (Drama, Horror, Mystery, 2015)
40		Shock Waves (Horror, Mystery, Sci-Fi, 1977)
40		The Relic (Horror, Mystery, Sci-Fi, 1997)
40		The Jade Mask (Horror, Mystery, Sci-Fi, 1945)
40		Disturbing Behavior (Horror, Mystery, Sci-Fi, 1998)
40		Brain Dead (Horror, Mystery, Sci-Fi, 1990)
39		The Last Exorcism (Drama, Horror, Thriller, 2010)
39		Saw II (Horror, Mystery, 2005)
39		Skew (Horror, Thriller, 2011)
39		You're Next (Horror, Thriller, 2011)
39		Dream Home (Horror, 2010)
39		Bloody Birthday (Horror, 1981)
38		Train (Horror, Thriller, 2008)
38		Primeval (Action, Adventure, Crime, Horror, 2007)
37		The Prometheus Project (Horror, Sci-Fi, 2010)
37		Specter (Horror, Sci-Fi, Thriller, 2012)
37		The Terror Within (Horror, Sci-Fi, 1989)
37		Stir of Echoes (Horror, Mystery, Thriller, 1999)
37		Tenebre (Horror, Mystery, Thriller, 1982)
37		The Earth Dies Screaming (Horror, Sci-Fi, 1964)
37		Hollow (Horror, Mystery, Thriller, 2011)
37		Be My Cat: A Film for Anne (Horror, Thriller, 2015)
37		Shivers (Horror, Sci-Fi, 1975)
37		30 Days of Night (Horror, 2007)
37		The Quatermass Xperiment (Horror, Sci-Fi, 1955)
36		Hungerford (Horror, Sci-Fi, 2014)
36		Skinwalker Ranch (Biography, Horror, Mystery, 2013)
36		Final Prayer (Horror, Mystery, 2013)
35		Final Destination 2 (Horror, Thriller, 2003)
35		The Poughkeepsie Tapes (Horror, Mystery, Thriller, 2007)
34		100 Ghost Street: The Return of Richard Speck (Horror, 2012)
34		Martin (Drama, Horror, 1977)
34		A Nightmare on Elm Street 4: The Dream Master (Fantasy, Horror, Thriller, 1988)
34		The Hidden (Action, Crime, Horror, 1987)
34		No One Lives (Horror, Thriller, 2012)
34		Unhinged (Horror, 1982)
34		The Kiss (Drama, Fantasy, Horror, 1988)
34		Hide and Go Shriek (Horror, Thriller, 1988)
34		Final Destination 5 (Horror, 2011)
33		Chain Letter (Horror, Thriller, 2009)
33		Nightbeasts (Horror, Sci-Fi, 2010)
33		Twin Peaks: The Missing Pieces (Drama, Horror, Mystery, 2014)
33		The Possession of Michael King (Horror, 2014)
32		Silent Night, Bloody Night (Horror, Mystery, Thriller, 1972)
32		Slime City Massacre (Action, Horror, Sci-Fi, 2010)
32		The Moth Diaries (Drama, Horror, Mystery, 2011)
32		The Reeds (Horror, Mystery, Thriller, 2010)
32		Srpski film (Horror, Mystery, Thriller, 2010)
32		6 Souls (Horror, Mystery, Thriller, 2010)
32		Savage (Horror, Sci-Fi, Thriller, 2011)
32		A Nightmare on Elm Street (Horror, Mystery, Thriller, 2010)
32		Wonderland (Fantasy, Horror, Sci-Fi, 2011)
32		Growth (Horror, Sci-Fi, 2010)
32		Madison County (Horror, Mystery, Thriller, 2011)
32		Red Lights (Drama, Horror, Mystery, 2012)
32		The Medusa Touch (Horror, Sci-Fi, 1978)
32		Shadowzone (Horror, Sci-Fi, 1990)
32		Alice Sweet Alice (Horror, Mystery, Thriller, 1976)
32		State of Emergency (Horror, Sci-Fi, Thriller, 2011)
32		Psych:9 (Horror, Mystery, Thriller, 2010)
32		Coffin (Crime, Horror, Mystery, 2011)
32		11-11-11 (Horror, Mystery, Thriller, 2011)
32		The Pact (Horror, Mystery, Thriller, 2012)
32		Cyrus (Crime, Horror, Mystery, 2010)
32		The Corridor (Drama, Horror, Sci-Fi, 2010)
32		The Rite (Drama, Horror, Mystery, 2011)
32		Stake Land (Drama, Horror, Sci-Fi, 2010)
32		Absentia (Drama, Horror, Mystery, 2011)
32		My Soul to Take (Horror, Mystery, Thriller, 2010)
32		The Oregonian (Horror, Mystery, Thriller, 2011)
32		The Color Out of Space (Drama, Horror, Mystery, 2010)
32		And Soon the Darkness (Crime, Horror, Mystery, 2010)
32		The Shadows (Horror, Mystery, Romance, 2011)
32		Atrocious (Horror, Mystery, Thriller, 2010)
32		Devil (Horror, Mystery, Thriller, 2010)
32		Red Riding Hood (Fantasy, Horror, Mystery, 2011)
32		Ragini MMS (Drama, Horror, Mystery, 2011)
32		Pickman's Muse (Horror, Sci-Fi, Thriller, 2010)
32		The Clinic (Crime, Horror, Mystery, 2010)
32		Seazone (Drama, Horror, Mystery, 2010)
32		The Bleeding House (Drama, Horror, Mystery, 2011)
32		Super Hybrid (Horror, Sci-Fi, Thriller, 2010)
32		Insidious (Fantasy, Horror, Mystery, 2010)
32		Scream 4 (Horror, Mystery, 2011)
32		Vanishing on 7th Street (Horror, Mystery, Thriller, 2010)
32		The Millennium Bug (Horror, Sci-Fi, Thriller, 2011)
32		Black Christmas (Horror, Mystery, Thriller, 1974)
32		Barricade (Horror, Mystery, Thriller, 2012)
32		Insensibles (Fantasy, Horror, Mystery, 2012)
32		Bait (Action, Horror, Sci-Fi, 2012)
32		Bigfoot: The Lost Coast Tapes (Horror, Mystery, Thriller, 2012)
32		The Gallows (Horror, Thriller, 2015)
32		Static (Drama, Horror, Mystery, 2012)
32		Day the World Ended (Horror, Sci-Fi, 1955)
32		Frankenstein Meets the Wolf Man (Fantasy, Horror, Sci-Fi, 1943)
32		The Abominable Snowman (Adventure, Horror, Sci-Fi, 1957)
32		Amber Alert (Horror, Mystery, Thriller, 2012)
32		Resident Evil: Retribution (Action, Horror, Sci-Fi, 2012)
32		After (Fantasy, Horror, Mystery, 2012)
32		Dead Season (Horror, Sci-Fi, 2012)
32		Antiviral (Horror, Sci-Fi, Thriller, 2012)
32		Universal Soldier: Day of Reckoning (Action, Horror, Mystery, 2012)
32		Outpost: Black Sun (Action, Horror, Sci-Fi, 2012)
32		Resolution (Horror, Mystery, Thriller, 2012)
32		Blair Witch (Horror, Thriller, 2016)
32		The Ghostmaker (Horror, Sci-Fi, Thriller, 2012)
32		Last Kind Words (Drama, Horror, Mystery, 2012)
32		Storage 24 (Horror, Sci-Fi, 2012)
32		Truth or Die (Horror, Mystery, 2012)

Notes: Movies similar to Apollo 18, Movies like Apollo 18, Horror, Mystery, Sci-Fi, Gonzalo López-Gallego, Warren Christie, Lloyd Owen, Ryan Robbins, Michael Kopsa, Films, Video, Movie Similarities