45		Undersea Kingdom (Sci-Fi, Adventure, 1936)
42		Return to the Lost World (Adventure, Sci-Fi, 1992)
42		Lost: Black Earth (Adventure, Sci-Fi, 2004)
41		Slipstream (Adventure, Sci-Fi, 1989)
41		Spirits of the Air, Gremlins of the Clouds (Adventure, Sci-Fi, 1989)
41		Spiritual Warriors (Adventure, Sci-Fi, 2007)
41		Planet of the Apes (Adventure, Sci-Fi, 1968)
40		Atlantis, the Lost Continent (Adventure, Sci-Fi, 1961)
40		First Men in the Moon (Adventure, Sci-Fi, 1964)
40		UFO Kidnapped (Adventure, Sci-Fi, 1983)
40		Master of the World (Sci-Fi, Adventure, 1961)
40		Sky Pirates (Adventure, Sci-Fi, 1986)
40		Jungle Manhunt (Adventure, Sci-Fi, 1951)
40		Killer Ape (Adventure, Sci-Fi, 1953)
40		The Last Dinosaur (Adventure, Sci-Fi, 1977)
40		Jungle Jim in the Forbidden Land (Sci-Fi, Adventure, 1952)
40		Captain Video, Master of the Stratosphere (Sci-Fi, Adventure, 1951)
40		Arrest Bulldog Drummond (Adventure, Sci-Fi, 1938)
40		The Angry Red Planet (Adventure, Sci-Fi, 1959)
40		Robinson Crusoe on Mars (Adventure, Sci-Fi, 1964)
40		The Dinosaur Project (Adventure, Sci-Fi, 2012)
40		The Lost Jungle (Adventure, Sci-Fi, 1934)
40		King Kong Escapes (Adventure, Sci-Fi, 1967)
40		Operazione Goldman (Adventure, Sci-Fi, 1966)
40		They Came from Beyond Space (Adventure, Sci-Fi, 1967)
38		The Return of Tommy Tricker (Adventure, Family, 1994)
37		Star Trek IV: The Voyage Home (Adventure, Comedy, Sci-Fi, 1986)
36		Nostradamus (Action, Adventure, Sci-Fi, 2000)
35		Stargate (Action, Adventure, Sci-Fi, 1994)
35		Secret War (Action, Adventure, Sci-Fi, 2003)
35		The Time Machine (Sci-Fi, Adventure, Action, 2002)
35		Philadelphia Experiment II (Action, Adventure, Sci-Fi, 1993)
35		The Secret Adventures of Tom Thumb (Animation, Adventure, Sci-Fi, 1993)
34		Back to the Future (Adventure, Comedy, Sci-Fi, 1985)
33		Edge of Tomorrow (Action, Adventure, Sci-Fi, 2014)
33		The Fifth Element (Action, Adventure, Sci-Fi, 1997)
33		X-Men: Days of Future Past (Action, Adventure, Sci-Fi, 2014)
33		Time Trackers (Action, Adventure, Sci-Fi, 1989)
32		Land of the Lost (Adventure, Comedy, Sci-Fi, 2009)
32		Star Kid (Adventure, Sci-Fi, Family, 1997)
32		Jumper (Action, Adventure, Sci-Fi, 2008)
32		Fantastic Voyage (Adventure, Family, Sci-Fi, 1966)
32		Future Hunters (Adventure, Action, Sci-Fi, 1986)
32		Jurassic Park (Adventure, Sci-Fi, Thriller, 1993)
32		Dr. Who and the Daleks (Adventure, Family, Sci-Fi, 1965)
32		Time After Time (Adventure, Drama, Sci-Fi, 1979)
32		Baby: Secret of the Lost Legend (Family, Adventure, Sci-Fi, 1985)
32		Iron Thunder (Action, Adventure, Sci-Fi, 1998)
32		Brick Bradford (Action, Adventure, Sci-Fi, 1947)
32		Wing Commander (Action, Adventure, Sci-Fi, 1999)
32		Terminator Genisys (Action, Adventure, Sci-Fi, 2015)
32		Fantastic Four (Action, Adventure, Sci-Fi, 2015)
32		Timerider: The Adventure of Lyle Swann (Action, Adventure, Sci-Fi, 1982)
32		Star Trek: Insurrection (Action, Adventure, Sci-Fi, 1998)
32		Flight World War II (Action, Adventure, Sci-Fi, 2015)
32		Drive (Action, Adventure, Sci-Fi, 1997)
32		The Lost World: Jurassic Park (Action, Adventure, Sci-Fi, 1997)
32		Laserhawk (Action, Adventure, Sci-Fi, 1997)
32		Armageddon (Action, Adventure, Sci-Fi, 1998)
31		A.I. Artificial Intelligence (Adventure, Drama, Sci-Fi, 2001)
31		Jurassic Park III (Action, Adventure, Sci-Fi, 2001)
31		Dykkerne (Adventure, Family, Sci-Fi, 2000)
31		X-Men (Action, Adventure, Sci-Fi, 2000)
31		Escape from L.A. (Action, Adventure, Sci-Fi, 1996)
31		Space Truckers (Adventure, Comedy, Sci-Fi, 1996)
31		Independence Day (Action, Adventure, Sci-Fi, 1996)
31		Robo Warriors (Action, Adventure, Sci-Fi, 1996)
31		Planet of the Apes (Action, Adventure, Sci-Fi, 2001)
31		The Pharaoh Project (Action, Adventure, Sci-Fi, 2001)
31		Oblivion 2: Backlash (Adventure, Comedy, Sci-Fi, 1996)
31		Mission to Mars (Adventure, Sci-Fi, Thriller, 2000)
31		Waterworld (Action, Adventure, Sci-Fi, 1995)
30		Inception (Action, Adventure, Sci-Fi, 2010)
30		Time Runner (Action, Adventure, Sci-Fi, 1993)
30		Knights (Action, Adventure, Sci-Fi, 1993)
30		The Core (Action, Adventure, Sci-Fi, 2003)
30		Sumuru (Adventure, Sci-Fi, Fantasy, 2003)
30		Alien Hunter (Action, Adventure, Sci-Fi, 2003)
30		G.O.R.A. (Adventure, Comedy, Sci-Fi, 2004)
30		Timeline (Action, Adventure, Sci-Fi, 2003)
30		Star Trek: Nemesis (Action, Adventure, Sci-Fi, 2002)
30		Oblivion (Adventure, Comedy, Sci-Fi, 1994)
30		Interstellar (Adventure, Drama, Sci-Fi, 2014)
30		The High Crusade (Adventure, Comedy, Sci-Fi, 1994)
30		Returner (Action, Adventure, Sci-Fi, 2002)
30		Serenity (Action, Adventure, Sci-Fi, 2005)
29		Back to the Future Part II (Adventure, Comedy, Sci-Fi, 1989)
29		The Abyss (Adventure, Drama, Sci-Fi, 1989)
29		The Hitchhiker's Guide to the Galaxy (Adventure, Comedy, Sci-Fi, 2005)
29		The Day After Tomorrow (Action, Adventure, Sci-Fi, 2004)
29		The Chronicles of Riddick (Action, Adventure, Sci-Fi, 2004)
29		Fei Ying (Action, Adventure, Sci-Fi, 2004)
29		A Young Connecticut Yankee in King Arthur's Court (Adventure, Fantasy, 1995)
29		Star Trek: First Contact (Action, Adventure, Drama, 1996)
29		The Meeksville Ghost (Adventure, Western, 2001)
29		Man with the Screaming Brain (Adventure, Comedy, Sci-Fi, 2005)
29		War of the Worlds (Adventure, Sci-Fi, Thriller, 2005)
29		Raiders of the Sun (Action, Adventure, Sci-Fi, 1992)
29		Neon City (Action, Adventure, Sci-Fi, 1991)
29		The Lost World (Adventure, Fantasy, Sci-Fi, 1992)
29		Thru the Moebius Strip (Animation, Adventure, Sci-Fi, 2005)
29		Fantastic Four (Action, Adventure, Sci-Fi, 2005)
29		Stealth (Action, Adventure, Sci-Fi, 2005)
29		Star Trek VI: The Undiscovered Country (Action, Adventure, Sci-Fi, 1991)
29		Aliens (Action, Adventure, Sci-Fi, 1986)
29		Mad Max: Fury Road (Action, Adventure, Sci-Fi, 2015)
29		Guardians of the Galaxy (Action, Adventure, Sci-Fi, 2014)
29		Captain America: Civil War (Action, Adventure, Sci-Fi, 2016)
29		2001: A Space Odyssey (Adventure, Mystery, Sci-Fi, 1968)
28		Crops (Action, Adventure, Sci-Fi, 2006)
28		Superman Returns (Action, Adventure, Sci-Fi, 2006)
28		Gravity (Adventure, Drama, Sci-Fi, 2013)
28		Star Trek V: The Final Frontier (Action, Adventure, Sci-Fi, 1989)
28		The Time Machine (Adventure, Romance, Sci-Fi, 1960)
28		Star Trek Into Darkness (Action, Adventure, Sci-Fi, 2013)
28		Arena (Action, Adventure, Sci-Fi, 1989)
28		Idiocracy (Adventure, Comedy, Sci-Fi, 2006)
28		Forbidden Planet (Action, Adventure, Sci-Fi, 1956)
28		Transformers (Action, Adventure, Sci-Fi, 2007)
28		Iron Man (Action, Adventure, Sci-Fi, 2008)
28		Spaced Invaders (Adventure, Comedy, Sci-Fi, 1990)
28		Star Trek (Action, Adventure, Sci-Fi, 2009)
28		X: First Class (Action, Adventure, Sci-Fi, 2011)
28		Atom Nine Adventures (Action, Adventure, Sci-Fi, 2007)
28		Sunshine (Adventure, Sci-Fi, Thriller, 2007)
28		Fantastic Four: Rise of the Silver Surfer (Action, Adventure, Sci-Fi, 2007)
28		Intergalactic Combat (Action, Adventure, Sci-Fi, 2007)
28		The Astronaut Farmer (Adventure, Drama, Sci-Fi, 2006)
28		Secret Agent 420 (Adventure, Comedy, 2005)
28		Mad Max 2: The Road Warrior (Action, Adventure, Sci-Fi, 1981)
28		Captain America: The Winter Soldier (Action, Adventure, Sci-Fi, 2014)
28		Star Trek II: The Wrath of Khan (Action, Adventure, Sci-Fi, 1982)
28		The Martian (Adventure, Drama, Sci-Fi, 2015)
27		City in the Sea (Adventure, Fantasy, Sci-Fi, 1965)
27		Operation Atlantis (Adventure, Crime, Sci-Fi, 1965)
27		Transformers: Age of Extinction (Action, Adventure, Sci-Fi, 2014)
27		Invasion of Astro-Monster (Action, Adventure, Sci-Fi, 1965)
27		X-Men: Apocalypse (Action, Adventure, Sci-Fi, 2016)
27		The Mysterious Island (Adventure, Romance, Sci-Fi, 1929)
27		Angry Video Game Nerd: The Movie (Adventure, Comedy, Sci-Fi, 2014)
27		Midnight Special (Adventure, Drama, Sci-Fi, 2016)
27		Arrowhead (Action, Adventure, Sci-Fi, 2016)
27		Batman v Superman: Dawn of Justice (Action, Adventure, Sci-Fi, 2016)
27		Valley of the Dragons (Adventure, Fantasy, Sci-Fi, 1961)
27		The Power God (Action, Adventure, Sci-Fi, 1925)
27		The Mask of Fu Manchu (Adventure, Horror, Sci-Fi, 1932)
27		The Incredible Hulk (Action, Adventure, Sci-Fi, 2008)
27		Mad Doctor of Blood Island (Adventure, Horror, Sci-Fi, 1968)
27		Missy and the Maxinator (Adventure, Mystery, Sci-Fi, 2009)
27		Paradise Cove (Adventure, Horror, Sci-Fi, 2008)
27		Latitude Zero (Action, Adventure, Sci-Fi, 1969)
27		Star Trek Beyond (Action, Adventure, Sci-Fi, 2016)
27		Star Wars: A Galaxy in Darkness (Adventure, Drama, Sci-Fi, 2009)
27		X-Men Origins: Wolverine (Action, Adventure, Sci-Fi, 2009)
27		20,000 Leagues Under the Sea (Action, Adventure, Sci-Fi, 1916)
27		Earth to Echo (Adventure, Family, Sci-Fi, 2014)
27		Outlander (Action, Adventure, Sci-Fi, 2008)
27		Flash Gordon (Action, Adventure, Sci-Fi, 1936)
27		Starship Troopers 3: Marauder (Action, Adventure, Sci-Fi, 2008)
27		Mutant Chronicles (Action, Adventure, Sci-Fi, 2008)
27		Babylon A.D. (Action, Adventure, Sci-Fi, 2008)
27		Independence Day: Resurgence (Action, Adventure, Sci-Fi, 2016)
27		The Killing Bottle (Action, Adventure, Sci-Fi, 1967)
27		Flight That Disappeared (Adventure, Fantasy, Sci-Fi, 1961)
27		Insurgent (Adventure, Sci-Fi, Thriller, 2015)
27		Magnetic (Adventure, Fantasy, Sci-Fi, 2015)
27		Avengers: Age of Ultron (Action, Adventure, Sci-Fi, 2015)
27		Jupiter Ascending (Action, Adventure, Sci-Fi, 2015)
27		Silver Needle in the Sky (Adventure, Family, Sci-Fi, 1954)
27		World Without End (Adventure, Romance, Sci-Fi, 1956)
27		Hardcore Henry (Action, Adventure, Sci-Fi, 2015)
27		The Beast from 20,000 Fathoms (Adventure, Horror, Sci-Fi, 1953)
27		Port Sinister (Adventure, Crime, Sci-Fi, 1953)
27		Jurassic World (Action, Adventure, Sci-Fi, 2015)
27		Captain America (Action, Adventure, Sci-Fi, 1944)
27		Flash Gordon Conquers the Universe (Action, Sci-Fi, Adventure, 1940)
27		Pete Winning and the Pirates: The Motion Picture (Action, Adventure, Sci-Fi, 2015)
27		Two Lost Worlds (Adventure, Romance, Sci-Fi, 1951)
27		Destination Moon (Adventure, Drama, Sci-Fi, 1950)
27		The Abominable Snowman (Adventure, Horror, Sci-Fi, 1957)
27		The Land Unknown (Adventure, Fantasy, Sci-Fi, 1957)
27		Robot Overlords (Action, Adventure, Sci-Fi, 2014)
27		SOS Coast Guard (Adventure, Romance, Sci-Fi, 1937)
27		Segon origen (Adventure, Horror, Sci-Fi, 2015)
27		Voyage to the Bottom of the Sea (Action, Adventure, Sci-Fi, 1961)
27		The 5th Wave (Action, Adventure, Sci-Fi, 2016)
27		The Fighting Devil Dogs (Adventure, Sci-Fi, War, 1943)
27		Mysterious Island (Adventure, Family, Sci-Fi, 1961)
27		Flash Gordon's Trip to Mars (Action, Adventure, Sci-Fi, 1938)
27		The Lost World (Adventure, Fantasy, Sci-Fi, 1960)
27		Curse of the Faceless Man (Adventure, Horror, Sci-Fi, 1958)
27		Vice (Action, Adventure, Sci-Fi, 2015)
27		Terminator Salvation (Action, Adventure, Sci-Fi, 2009)
27		Queen of Outer Space (Adventure, Fantasy, Sci-Fi, 1958)
27		The Cosmic Man (Adventure, Sci-Fi, Thriller, 1959)
27		From the Earth to the Moon (Adventure, Fantasy, Sci-Fi, 1958)
27		Blake of Scotland Yard (Adventure, Crime, Sci-Fi, 1937)
27		Gentlemen Broncos (Adventure, Comedy, Sci-Fi, 2009)
27		The Spy Who Loved Me (Action, Adventure, Sci-Fi, 1977)
27		America 3000 (Action, Adventure, Sci-Fi, 1986)
27		Biggles: Adventures in Time (Adventure, Family, Sci-Fi, 1986)
27		SpaceCamp (Adventure, Family, Sci-Fi, 1986)
27		Starchaser: The Legend of Orin (Adventure, Animation, Sci-Fi, 1985)
27		Zone Troopers (Action, Adventure, Sci-Fi, 1985)
27		Wheels of Fire (Action, Adventure, Sci-Fi, 1985)
27		Mad Max Beyond Thunderdome (Action, Adventure, Sci-Fi, 1985)
27		Return from Witch Mountain (Family, Adventure, Sci-Fi, 1978)
27		At the Earth's Core (Sci-Fi, Adventure, Fantasy, 1976)
27		Flight of the Navigator (Adventure, Family, Sci-Fi, 1986)
27		Steel Dawn (Action, Adventure, Sci-Fi, 1987)
27		Beyond the Rising Moon (Adventure, Sci-Fi, Thriller, 1987)
27		The Lawless Land (Sci-Fi, Action, Adventure, 1988)
27		Spaceballs (Adventure, Comedy, Sci-Fi, 1987)
27		Equalizer 2000 (Action, Adventure, Sci-Fi, 1987)
27		The Wolverine (Action, Adventure, Sci-Fi, 2013)
27		Logan's Run (Action, Adventure, Sci-Fi, 1976)
27		The Food of the Gods (Adventure, Horror, Sci-Fi, 1976)
27		Warlords of the Deep (Fantasy, Adventure, Sci-Fi, 1978)
27		2010 (Adventure, Mystery, Sci-Fi, 1984)
27		Flash Gordon (Action, Adventure, Sci-Fi, 1980)
27		The Last Chase (Action, Adventure, Sci-Fi, 1981)
27		Divergent (Adventure, Mystery, Sci-Fi, 2014)
27		Battletruck (Action, Adventure, Sci-Fi, 1982)
27		Battle Beyond the Stars (Action, Adventure, Sci-Fi, 1980)
27		Saturn 3 (Adventure, Sci-Fi, Thriller, 1980)
27		Moonraker (Action, Adventure, Sci-Fi, 1979)
27		Buck Rogers in the 25th Century (Action, Adventure, Sci-Fi, 1979)
27		Star Trek: The Motion Picture (Adventure, Mystery, Sci-Fi, 1979)
27		TRON (Action, Adventure, Sci-Fi, 1982)
27		Star Wars: Threads of Destiny (Action, Adventure, Sci-Fi, 2014)
27		Star Trek III: The Search for Spock (Action, Adventure, Sci-Fi, 1984)
27		The Last Starfighter (Action, Adventure, Sci-Fi, 1984)
27		Dune (Action, Adventure, Sci-Fi, 1984)
27		The Watchers: Revelation (Action, Adventure, Sci-Fi, 2013)
27		Battlestar Galactica (Action, Adventure, Sci-Fi, 1978)
27		Starcrash (Action, Adventure, Sci-Fi, 1978)
27		Spacehunter: Adventures in the Forbidden Zone (Action, Adventure, Sci-Fi, 1983)
27		Space Raiders (Action, Adventure, Sci-Fi, 1983)
27		The Scarf (Adventure, Drama, Sci-Fi, 2009)
27		BraveStarr: The Legend (Adventure, Animation, Sci-Fi, 1988)
27		Paul (Adventure, Comedy, Sci-Fi, 2011)
27		Tron: Legacy (Action, Adventure, Sci-Fi, 2010)
27		Escape from New Jersey (Action, Adventure, Sci-Fi, 2010)
27		Beneath the Planet of the Apes (Action, Adventure, Sci-Fi, 1970)
27		I Am Number Four (Action, Adventure, Sci-Fi, 2011)
27		When Dinosaurs Ruled the Earth (Adventure, Fantasy, Sci-Fi, 1970)
27		Captain America: The First Avenger (Action, Adventure, Sci-Fi, 2011)
27		Transformers: Dark of the Moon (Action, Adventure, Sci-Fi, 2011)
27		Green Lantern (Action, Adventure, Sci-Fi, 2011)
27		Predators (Action, Adventure, Sci-Fi, 2010)
27		Iron Man 2 (Action, Adventure, Sci-Fi, 2010)
27		G.I. Joe: The Rise of Cobra (Action, Adventure, Sci-Fi, 2009)
27		Transformers: Revenge of the Fallen (Action, Adventure, Sci-Fi, 2009)
27		Marooned (Adventure, Drama, Sci-Fi, 1969)
27		Mad Max (Action, Adventure, Sci-Fi, 1979)
27		MGS: Philanthropy (Action, Adventure, Sci-Fi, 2009)
27		Parody Movie (Adventure, Comedy, Sci-Fi, 2009)
27		2012 (Action, Adventure, Sci-Fi, 2009)
27		Universal Soldier: Regeneration (Action, Adventure, Sci-Fi, 2009)
27		Pacific Rim (Action, Adventure, Sci-Fi, 2013)
27		Time Again (Action, Adventure, Sci-Fi, 2011)
27		G.I. Joe: Retaliation (Action, Adventure, Sci-Fi, 2013)
27		Godzilla (Action, Adventure, Sci-Fi, 2014)
27		Evolution Creek (Adventure, Sci-Fi, Thriller, 2012)
27		Superman (Action, Adventure, Sci-Fi, 1973)
27		Iron Man Three (Action, Adventure, Sci-Fi, 2013)
27		Mosquito-Man (Action, Adventure, Sci-Fi, 2013)
27		Hiroku: Defenders of Gaia (Animation, Adventure, Sci-Fi, 2013)
27		The Amazing Spider-Man 2 (Action, Adventure, Sci-Fi, 2014)
27		After Earth (Action, Adventure, Sci-Fi, 2013)
27		Prometheus (Adventure, Mystery, Sci-Fi, 2012)
27		Lockout (Action, Adventure, Sci-Fi, 2012)
27		The Hunger Games (Adventure, Drama, Sci-Fi, 2012)
27		Creatures the World Forgot (Adventure, Horror, Sci-Fi, 1971)
27		Ra.One (Action, Adventure, Sci-Fi, 2011)
27		Battleship (Action, Adventure, Sci-Fi, 2012)
27		Dominant Gene (Action, Adventure, Sci-Fi, 2011)
27		The Twilight People (Adventure, Horror, Sci-Fi, 1972)
27		John Carter (Action, Adventure, Sci-Fi, 2012)

Notes: Movies similar to The Secret Kingdom, Movies like The Secret Kingdom, Adventure, Sci-Fi, David Schmoeller, Billy O'Sullivan, Andrew Ducote, Samantha Tabak, Gerald S. O'Loughlin, Films, Video, Movie Similarities