Flesh Gordon (1974)
Rating: ★★
Softcore Flash Gordon Parody
Flesh Gordon Meets the Cosmic Cheerleaders (1991)
Rating: ★★
Softcore Flash Gordon Parody
Flight to Mars (1951)
Rating: ★★
Mission to Mars
The Flintstones in Viva Rock Vegas (2000)
Rating: ★
Prehistoric Comedy/Cartoon in Live-Action
Flying Disc Man from Mars (1950)
Rating: ★★
Serial/Alien Invader
Foreboding (2017)
Rating: ★★★
Japanese Alien Invasion Film
The Forgotten (2004)
Rating: ★★★
Erased Memories
Frankenstein Meets the Spacemonster (1965)
Rating: ★★
Amok Android vs Alien Invaders
Fried Barry (2020)
Rating: ★★
Man Inhabited by an Alien
Friendship’s Death (1987)
Rating: ★★★½
Ambiguous Android Woman Alien Visitor
Galaxina (1980)
Rating: ★
Female Android
Galaxis (1995)
Rating: 0
Alien Warrior Woman
Galaxy Turnpike (2015)
Rating: ★★
Intergalactic Burger Bar Comedy
GalaxyQuest (1999)
Rating: ★★★★
Star Trek Parody
Gamera: Super Monster (1980)
Rating: 0
Japanese Monster Movie
Gandahar (1988)
Rating: ★★
Animation/Planetary Adventure
The Gendarme and the Extra-Terrestrials (1979)
Rating: ★★
Alien Visitors Slapstick Comedy
The Ghastly Love of Johnny X (2012)
Rating: ★★★
Gonzo Exploitation Movie Homage
Ghidrah the Three-Headed Monster (1964)
Rating: ★★★
Japanese Monster Bash
Ghosts of Mars (2001)
Rating: ★★
Resurrected Spirits on Mars
Gintama (2017)
Rating: ★★
Live-Action Anime Adaptation
The Girl from Monday (2005)
Rating: ★★
Satiric Future/Alien Visitor
God Told Me To (1976)
Rating: ★★★½
Alien Messiah/Cult Killings/Alien Abduction & Impregnation
Godzilla: City on the Edge of Battle (2018)
Rating: ★★★
Anime/Japanese Monster Movie
Godzilla: Final Wars (2004)
Rating: ★★★½
Japanese Monster Bash
Godzilla: Planet of the Monsters (2017)
Rating: ★★
Anime/Japanese Monster Movie
Godzilla: The Planet Eater (2018)
Rating: ★★
Anime/Japanese Monster Movie
Godzilla vs Gigan (1972)
Rating: 0
Japanese Monster Bash
Godzilla vs the Cosmic Monster (1974)
Rating: 0
Japanese Monster Bash
Goke, Body Snatcher from Hell (1968)
Rating: ★★★
Body-Snatching Alien Vampire
Good Boy! (2003)
Rating: 0
Talking Alien Dogs
Goosebumps (2015)
Rating: ★★
Horror Writer’s Creations Unleashed
The Gracefield Incident (2017)
Rating: ★★★
UFO Found Footage Film
Green Lantern (2011)
Rating: ★★★
Comic-Book Superhero
Green Lantern: Beware My Power (2022)
Rating: ★★
Animation/DC Comics Superhero
Green Lantern: Emerald Knights (2011)
Rating: ★★★
Animation/Tales of the Green Lantern Corps
Green Lantern: First Flight (2009)
Rating: ★★★
Animation/DC Comics Superhero
The Green Slime (1968)
Rating: ★★
Alien Nasty
Grey Skies: The Alien Conspiracy (2001)
Rating: ★★½
Alien Invasion Anthology
Guardians of the Galaxy (2014)
Rating: ★★★★
Marvel Comics Adaptation/Space Opera
Guardians of the Galaxy: Vol. 2 (2017)
Rating: ★★
Marvel Comics Adaptation/Space Opera
Guardians of the Galaxy: Vol. 3 (2023)
Rating: ★★★
Marvel Comics Adaptation/Space Opera
The Guyver (1991)
Rating: ★★
Power-Suit Superhero
Guyver: Dark Hero (1994)
Rating: ★★
Power-Suit Superhero
Halo 4: Forward Unto Dawn (2012)
Rating: ★★
Videogame Adaptation/Military Recruits in Training
Halo Legends (2010)
Rating: ★★½
Compilation of Anime Shorts/Videogame Adaptation/Space War
Halo Nightfall (2014)
Rating: ★★★
Videogame Adaptation/Planetary Survival
Hard to Be a God (1989)
Rating: ★★★
Human Observers on a Barbarous Alien World
Hard to Be a God (2013)
Rating: ★★
Human Observers on a Barbarous Alien World
Heavy Metal (1981)
Rating: ★★½
Adult Animation Anthology
Heavy Metal 2000 (2000)
Rating: ★★
Adult Animation/Space Opera
The Hidden (1987)
Rating: ★★★★
Body-Hopping Alien
The Hidden II (1994)
Rating: ½
Body-Hopping Alien
The High Crusade (1994)
Rating: ★
Bumbling Crusaders in Space
Highlander II: The Quickening (1991)
Rating: 0
Immortal Combat/Dark Future
The History of Future Folk (2012)
Rating: ★★
Aliens Form Bluegrass Band
The Hitch Hikers Guide to the Galaxy (1981)
Rating: ★★★
Gonzo SF
The Hitchhiker’s Guide to the Galaxy (2005)
Rating: ★
Gonzo SF
Hobgoblins (1988)
Rating: 0
Malicious Alien Critters
Home (2015)
Rating: ★★½
Animation/Alien Visitors Comedy
Honeymoon (2014)
Rating: ★★★
Sinister Backwoods Happenings
Horror Express (1972)
Rating: ★★★
Body-Hopping Alien Aboard a Train
The Host (2013)
Rating: ★★★
Alien Body Snatchers
How to Talk to Girls at Parties (2017)
Rating: ★★
Romance with an Alien Visitor
Howard the Duck (1986)
Rating: 0
Talking Alien Duck/Comic Book Adaptation
The Human Duplicators (1965)
Rating: ★
Android Takeover Plot/Alien Invasion
Hunter Prey (2010)
Rating: ★★½
Human-Alien Enemies in Pursuit Across a Desert Planet
Hyper Sapien: People from Another Star (1986)
Rating: 0
Alien Runaway Kids
I Am Number Four (2011)
Rating: ★
Alien Teenager on Earth/Young Adult
I Married a Monster from Outer Space (1958)
Rating: ★★★
Alien Duplication and Takeover
I Married a Monster (1998)
Rating: ★
Alien Duplication and Takeover
I Sell the Dead (2008)
Rating: ★★
Grave Robbers Encounters Monsters
The Ice Pirates (1984)
Rating: ★★
Space Opera
Immortal (ad vitam) (2004)
Rating: ★★½
Future New York/Ancient Egyptian Gods Return
Independence Day (1996)
Rating: ★★
Alien Invasion
Independence Day: Resurgence (2016)
Rating: ★½
Alien Invasion
Independents’ Day (2016)
Rating: ★★
Asylum Mockbuster/Alien Invasion
Indiana Jones and the Kingdom of the Crystal Skull (2008)
Rating: ★★
High Adventure/Alien Artefacts
Infini (2015)
Rating: ★★
Mass-Insanity Inducing Alien Substance
The Infinite Worlds of H.G. Wells (2001)
Rating: ★★½
Anthology of H.G. Wells Stories/TV Mini-Series
Infra Man (1976)
Rating: ★★★
Hong Kong Superheroics
Inseminoid (1981)
Rating: ★
Alien Impregnation
Interstella 5555 (2003)
Rating: ★★
Anime/Intergalactic Rock Band
Intruders (1992)
Rating: ★★
Alien Abductions
Invaders from Mars (1953)
Rating: ★★★½
Alien Body Snatchers
Invaders from Mars (1986)
Rating: ★★
Alien Body Snatchers
Invasion (1966)
Rating: ★★½
British Alien Invasion Film
Invasion Earth: The Aliens Are Here (1988)
Rating: 0
Aliens Invade Movie Theatre/1950s SF Film Clip Compilation
Invasion of Alien Bikini (2011)
Rating: ★★★
Gonzo Alien Seduction/South Korean Comedy
Invasion of the Body Snatchers (1956)
Rating: ★★★★★
Alien Duplication and Takeover
Invasion of the Body Snatchers (1978)
Rating: ★★★★½
Alien Duplication and Takeover
Invasion of the Neptune Men (1961)
Rating: 0
Alien Invasion/Japanese Space Opera
Invasion of the Saucer Men (1957)
Rating: ★★
Teens vs Alien Invaders
Invasion of the Star Creatures (1962)
Rating: 0
Women Alien Invaders Comedy
Iron Sky: The Coming Race (2019)
Rating: ★★
Nazi Moonbase/Alien Lizard People from the Centre of the Earth
It Came from Outer Space (1953)
Rating: ★★★★
Alien Body Snatchers
It Came from Outer Space II (1995)
Rating: ½
Alien Body Snatchers
It Conquered the World (1956)
Rating: ★★★
Alien Invasion
It! The Terror from Beyond Space (1958)
Rating: ★★★
Alien Nasty
The Item (1999)
Rating: ★★
Hitmen Guard an Alien Creature