Abbott and Costello Go to Mars (1953)

Abbott and Costello Go to Mars (1953) poster
Rating: ★★
Two Idiots Go to Venus

Abbott and Costello take time out from comic hijinks with the Famous Monsters to go to Venus (despite the title) and engage in various datedly sexist gags with a planetful of women

Abraxas: Guardian of the Universe (1991)

Abraxas: Guardian of the Universe (1991) poster
Rating:
Intergalactic Cop Hunts Criminal on Earth

Incredibly bad and frequently laughable variation on The Hidden and in turn The Terminator with Jesse Ventura as an intergalactic law enforcement officer hunting a criminal on Earth

The Abyss (1989)

The Abyss (1989) poster
Rating: ★★★★
Alien Encounter Underwater

James Cameron had mixed success with this alien contact film. Much of the show is designed to highlight Cameron’s interest in diving and the effects on display are spectacular but the film peters out at a peculiarly abrupt non-ending

The Adventures of Buckaroo Banzai: Across the Eighth Dimension (1984)

The Adventures of Buckaroo Banzai: Across the 8th Dimension (1984) poster
Rating: ★★
Funky Inventor Hero vs Alien Invaders

An object lesson in how to create an instant cult film – exceedingly eccentric, a commercial failure at the box-office, it instantly receiving a fan clique – all without it ever being a particularly great film

AE: Apocalypse Earth (2013)

AE: Apocalypse Earth (2013) poster
Rating:
The Asylum Mockbuster/Planetary Adventure

Another of The Asylum’s mockbusters, intended to come out the same time as M. Night Shyamalan’s After Earth. This feels like a cheap planetary adventure that recycles Avatar and Planet of the Apes

Age of Tomorrow (2014)

Age of Tomorrow (2014) poster
Rating: ★½
The Asylum Mockbuster/Alien Invasion

The Asylum’s mockbuster answer to the Tom Cruise film Edge of Tomorrow, which has very little to do with it other than both featuring an alien invasion. A film created with more ambition than budget to convey it

A.I. (Artificial Intelligence) (2001)

Rating: ★★★★½
Android Boy’s Quest

Steven Spielberg directs an unfinished Stanley Kubrick project about an android boy’s quest. The result is a beautiful and intelligent SF film where the sensibilities of either director merge with magnificent results

Alien (1979)

Rating: ★★★★★
Alien Nasty on a Spaceship

One of the most influential films on this site, producing a host of sequels and making the careers of all involved. At heart, a simple monster on a spaceship film, it is made into a classic through Ridley Scott’s relentless suspense and H.R. Giger’s design work

The Alien Agenda: Out of the Darkness (1996)

The Alien Agenda: Out of the Darkness (1996) poster
Rating: ★★★½
Alien Takeover Anthology

The first of the Kevin J. Lindenmuth’s compilation films that bring together several short films under the umbrella of an alien invasion. Lindenmuth’s Worm segment in particular is standout

Alien Conquest (2021)

Alien Conquest (2021) poster
Rating: ★★★
Alien Invasion/Modernised The War of the Worlds Adaptation

The Asylum conduct a modernised remake of H.G. Wells’ The War of the Worlds – for the second time. With resident mad scientist Joe Roche on script, the results are undeniably interesting

Alien Hunter (2003)

Alien Hunter (2003) poster
Rating: ★★
Alien Unearthed in the Antarctic

Film about a mysterious alien artifact unearthed in the Antarctic that falls apart due to a script that is constantly jumping all over the place and spending more time homaging other science-fiction films

Alien Implant (2017)

Alien Implant (2017) poster
Rating:
Alien Abductee Seeks Revenge

A film about a former alien abductee pottering endlessly about a cabin in order to lure the aliens who took her and take revenge. A film that is about as close to total amateurism as possible to get

Alien Invasion: S.U.M.1 (2017)

Alien Invasion S.U.M.1 (2017) poster
Rating: ★★
Earth in the Aftermath of an Alien Invasion

An enigmatic film set in a future where aliens have invaded the Earth as a lone soldier is sent to crew a remote post and imagines he is seeing things

Alien Origin (2012)

Alien Origin (2012) poster
Rating:
Found Footage/Alien Encounter

The Asylum’s mockbuster version of Prometheus where they have settled for giving us Predator as a Found Footage film (with a good few doses of Ancient Astronauts nuttinesss)

Aliens vs Titanic (2017)

Aliens vs Titanic (2017) poster
Rating: ★★
Stranded on a Planet with Alien Parasites

Full marks for the title. Rather than any spacegoing version of Titanic, we have a spaceship named Titan1-C, which is soon abandoned and thereafter a cheesily ridiculous film about alien chestbusters

All Hallows’ Eve (2013)

All Hallow's Eve (2013) poster
Rating: ★★
Horror Anthology

From the director of the Terrifier films, a horror anthology in which a babysitter and kids sit down to watch a mysterious videotape on Halloween night. The first screen appearance of Art the Clown

Altergeist (2014)

Altergeist (2014) poster
Rating:
Ghost Hunters Investigate Haunted Winery

Film about ghosthunters investigating a reputedly haunted California winery. The scares are about as generic and forgettable as they come, although the end takes a very strange left field turn

Amazon Women on the Moon (1987)

Amazon Women on the Moon (1987) poster
Rating: ★★
Anthology of Comedy Skits & Genre Parodies

An anthology of comedy skits from several different directors including Joe Dante and John Landis. The result is fairly scattershot with moments of occasional humour falling between laughs that do not come off

Andromeda Nebula (1967)

Andromeda Nebula (1967) poster
Rating: ★★
Soviet SF Film/Space Exploration

A Soviet SF film about the exploration of an alien planet. Though they tended to the dramatically stolid, these Soviet films had amazing budgets their US counterparts of the era never did

Angry Video Game Nerd: The Movie (2014)

Angry Video Game Nerd: The Movie (2014) poster
Rating:
Videogame Reviewer's Quest/Deliberately Bad Film

A film spun out around a YouTube channel of videogame reviews. This sinks down into unfunny fannish in-joking, while the attempts to be a mock bad movie only seem silliness for its own sake

Annihilation (2018)

Rating: ★★★½
Mysterious Alien Zone

Alex Garland’s second directorial effort after Ex Machina. Clearly influenced by Andrei Tarkovsky’s Stalker, this features a group venturing into an alien-affected zone where Garland does a fine job of creating a sense of the otherworldly

Ant-Man and the Wasp: Quantumania (2023)

Ant-Man and the Wasp: Quantumania (2023) poster
Rating: ★★½
Marvel Comics Miniature Superhero

The third of the films devoted to Marvel’s miniature superhero. This ventures into multiverse themes works well when it comes to introducing the MCU’s big new super-villain who ended up never happening

Apollo 18 (2011)

Apollo 18 (2011) poster
Rating: ★★★
NASA Moon Landing/Alien Possession Found Footage Film

Clever and well made Found Footage film about a NASA crew encountering something alien on The Moon’s surface. Falls somewhere between Alien, Apollo 13 and Paranormal Activity

Aqua Teen Hunger Force Colon Movie Film for Theaters (2007)

Aqua Teen Hunger Force Colon Movie Film for Theaters (2007) poster
Rating:
Gonzo Animation

Film spinoff of the cult animated tv show. This feels like a film overtaken by the effort of trying to be surrealistic, wacky, scatological etc more than it is ever a film that creates gag that are funny

Area 51 (2015)

Area 51 (2015) poster
Rating: ★★★
Found Footage/Break-In to Area 51

Paranormal Activity director Oren Peli’s second film – a gripping Found Footage film about a group breaking into Area 51 in search of evidence of the alien visitors that the US government is holding

The Arrival (1996)

The Arrival (1996) poster
Rating: ★★★½
Alien Infiltration and Takeover

An alien invasion and takeover film that was clearly inspired by the success of tv’s The X Files. This is a smart effort that emerges as something unworldly in David Twohy’s hands

Arrival (2016)

Arrival (2016) poster
Rating: ★★★★★
First Contact with Aliens

Most SF films gloss over the issue of communication with aliens, having them either speaking English or with devices like Universal Translators. This is a superbly intelligent film that grapples with how to communicate with something different

Ash (2025)

Ash (2025) poster
Rating: ★★
Hostile Alien Planet/Alien Nasty

The rapper turned filmmaker Flying Lotus directs a copy of Alien with an amnesiac crewmember of a ship landed on a hostile planet where the crew are hunted by an alien nasty

Asteroid City (2023)

Asteroid City (2023) poster
Rating: ★★★
Retro 1950s Comedy/Alien Visitor

Wes Anderson’s quirky individualistic films can be an acquired taste. This is set in a stunningly designed retro 1950s town as various oddball characters intersect in between the appearance of an alien visitor

Attack of the Monsters (1969)

Attack of the Monsters (1969) poster
Rating: ★★★
Japanese Monster Movie

The fifth of the Gamera films, Japanese monster movies that are made for children. This abandons the relative realism of the earlier films for a colourful silliness with frequently lunatic results

Attack the Block (2011)

Attack the Block (2011) poster
Rating: ★★★½
Alien Invasion on a British Housing Estate

A refreshingly original film that transplants an alien invasion story to a modern British housing estate where a group of young hoodlums become the first line of defence against the invaders

The Aurora Encounter (1985)

The Aurora Encounter (1985) poster
Rating: ★★
UFO Encounter in the Old West

A low-budget cute alien film made in the aftermath of post-E.T., this purports to be based on the true story of a UFO and alien visitor who landed in 19th Century Texas

Avatar (2009)

Avatar (2009) poster
Rating: ★★★★★
War Between Human Colonists and Aliens

James Cameron’s film was a smash phenomenon. Cameron has relocated the plot of Dances With Wolves on another planet and uses motion capture to create one of the most dazzlingly realised alien worlds on film

Avatar: Fire and Ash (2025)

Avatar: Fire and Ash (2025) poster
Rating: ★★★
War Between Human Colonists and Aliens

James Cameron makes a third venture into the world of Pandora. The question is whether he finds any new territory to explore. What you cannot deny is that he creates a pretty and absorbing picture out of it all

Avatar: The Way of Water (2022)

Avatar: The Way of Water (2022) poster
Rating: ★★★★
War Between Human Colonists and Aliens

James Cameron finally delivers his sequel to Avatar. Nothing could quite repeat the same phenomenon a second time but this does well with Cameron taking the opportunity to show more depth to his alien world

AVN (2010)

AVN (2010) poster
Rating: ★★★
Ninjas Fight Alien Creatures

Japanese film that true to its title offers pits ninja against alien creatures. The film plants tongue considerably in cheek as it offers up a series of wildly fantastique action scenes and creature effects

AVP: Alien vs. Predator (2004)

AVP Alien vs Predator (2004) poster
Rating: ★★
Alien/Predator Series' Crossover

Beginning as fan mill speculation, 20th Century Fox finally brought their Alien and Predator franchises together on the screen here. The result is an okay effort in the hands of Paul W.S. Anderson, even if it never has the grueling intensity of the early entries in either series

AVPR: Aliens vs Predator Requiem (2007)

AVPR Aliens vs Predator Requiem (2007) poster
Rating:
Alien/Predator Series' Crossover

Second of the Alien/Predator crossovers and the absolute nadir of either series. Gone is the suspense of either series’ earlier entries and the creatures are now no more than standard monsters in a teen horror film

Bad Taste (1988)

Bad Taste (1988) poster
Rating: ★★★★
Splatter Comedy/Alien Invasion

Peter Jackson first appeared with this no-budget splatter comedy. A miracle of DIY filmmaking, the film plays out like a live-action Roadunner cartoon where the creativity of Jackson’s home-made gore effects is positively ingenious

Barbarella (1968)

Barbarella (1968) poster
Rating: ★★★★
Softcore Space Opera

Charmingly capricious and silly adaptation of the comic-strip with a wide-eyed Jane Fonda as the spacegoing heroine. Filled with some wonderfully naughty gags and a production and costume design scheme that goes to a gorgeously deranged excess

Batman and Superman: Battle of the Super Sons (2022)

Batman and Superman: Battle of the Super Sons (2022) poster
Rating: ★★★
Comic-Book Superheroes/Animation

Animated film featuring a team-up between the sons of Batman and Superman, which ends up being far more fun than you expect

Battle Beyond the Stars (1980)

Battle Beyond the Stars (1980) poster
Rating: ★★★
Space Opera

Roger Corman jumps aboard the Star Wars fad and offers up a version of The Seven Samurai/The Magnificent Seven located in space. Corman has thrown a reasonable budget at the film for once and it emerges as colourfully enjoyable

Battle Earth (2012)

Battle Earth (2012) poster
Rating: ★★
Alien Invasion/Behind Enemy Lines

Taking inspiration from Battle Los Angeles, this is another shakycam-shot war film but with the intriguing idea of being focused around human soldiers trapped behind alien enemy lines

Battle for Pandora (2022)

Battle for Pandora (2022) poster
Rating: ★★
Planetary Exploration/Alien Body Snatchers

The Asylum’s mockbuster take on Avatar: The Way of Water, which ingeniously exploits the fact that Saturn has a moon called Pandora. The rest is a low-budget body snatchers film

Battle for Terra (2007)

Battle for Terra (2007) poster
Rating: ★★
Animation/War Between Human Colonists and Aliens

Animated film that has a remarkable number of similarities to Avatar – even though it was released before. A simplistic variant of the same human colonists vs alien natives plot conducted with corner-cut CGI animation

Battle in Outer Space (1961)

Battle in Outer Space (1961) poster
Rating: ★★★
Alien Invasion/Japanese Space Opera

Godzilla director Ishiro Honda makes a colourfully entertaining space opera about Earth’s battle to fight off an alien invasion force on The Moon

Battle of the Stars (1978)

Battle of the Stars (1978) poster
Rating: ★★
Italian Space Opera

The success of Star Wars saw a host of copies made over the next few years. This was one of several low-budget Italian space opera knockoffs of this period, featuring invading aliens from Ganymede

Battlefield Earth: A Saga of the Year 3000 (2000)

Battlefield Earth: A Saga of the Year 3000 (2000) poster
Rating:
Earth Under Alien Rule/L. Ron Hubbard Adaptation

The adaptation of the alien invasion novel by Scientology founder L. Ron Hubbard starring John Travolta is a completely ridiculous film that was laughed off screens and is regarded as a classic bad movie

Battleship (2012)

Battleship (2012) poster
Rating:
US Navy vs Alien Invaders/Boardgame Adaptation

Adaptation of the Battleship boardgame that emerges at best as wannabe Michael Bay. Imagine Pearl Harbor mashed up with a Transformers film and lots of bone-headed glorification of American militarism

Beach Babes from Beyond (1993)

Beach Babes from Beyond (1993) poster
Rating:
Alien Beach Bunnies

Prolific low-budget hack David DeCoteau directs what feels like a very softcore version of a Gidget film crossbred with Earth Girls Are Easy (albeit with the sexes reversed). A film that quickly sinks into awfulness

Before We Vanish (2017)

Before We Vanish (2017) poster
Rating: ★★★
Japanese Alien Invasion Film

Japan’s Kiyoshi Kurosawa is known for his intensely uncanny and bafflingly cryptic horror films. Here he makes an alien invasion film, although a minimalist and very different one that proves quite fascinating

Bigfoot vs The Illuminati (2020)

Bigfoot vs the Illuminati (2020) poster
Rating:
Gonzo Animation/Bigfoot Resurrected in Space

From the director of Trump vs the Illuminati, gonzo animation where Bigfoot and several resurrected historical figures fight off invading aliens that include Stalin, Aleister Crowley and Anubis

Bill and Ted’s Bogus Journey (1991)

Bill and Ted's Bogus Journey (1991) poster
Rating: ★★
Slackers in the Afterlife

The sequel to Bill and Ted’s Excellent Adventure where the first film’s humour gets lost amid repetition and blown up by a big-budget. William Sadler’s Death however proves a scene-stealer

Bill the Galactic Hero (2014)

Bill the Galactic Hero (2014) poster
Rating:
Space War Parody

Harry Harrison’s Bill the Galactic Hero is hands down the funniest science-fiction book of all time; it is painful watching it rendered in the hands of Alex Cox who has only the budget and resources of an amateur film

Body Snatchers (1993)

Body Snatchers (1993) poster
Rating: ★★★★
Invasion of the Body Snatchers Remake

Abel Ferrara’s remake of Invasion of the Body Snatchers is an overlooked film that settles in with an undeniable creepiness that is just as effective as the earlier versions. The metaphor for the pod people is more diffuse in this one but that does not mitigate the film’s effect

The Box (2009)

The Box (2009) poster
Rating:
Mysterious Stranger Offers Couple a Terrible Choice

Donnie Darko director Richard Kelly adapts a Richard Matheson story about a couple who are offered a terrible choice by a stranger but delivers a bafflingly incomprehensible film

The Boy Who Turned Yellow (1972)

The Boy Who Turned Yellow (1972) poster
Rating: ★★
Children's Film/Alien Visitor

Michael Powell was one of the greatest and most underrated post-War British directors. This was his last film, a bizarre children’s film about a boy being turned yellow and visited by an alien