The Best Alien Movies on Free Services

What it's about: Thirty years ago, aliens arrive on Earth. Not to conquer or give aid, but to find refuge from their dying planet. Separated from humans in a South African area called District 9, the aliens are managed by Multi-National United, which is unconcerned with the aliens' welfare but will do anything to master their advanced technology. When a company field agent contracts a mysterious virus that begins to alter his DNA, there is only one place he can hide: District 9.

Where to Watch: Available to watch free online (Sony Crackle & Vudu), stream on a popular subscription service (Prime Video & Hulu) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: A man struggles with memories of his past, including a wife he cannot remember, in a nightmarish world with no sun and run by beings with telekinetic powers who seek the souls of humans.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Corky St. Clair is a director, actor and dancer in Blaine, Missouri. When it comes time to celebrate Blaine's 150th anniversary, Corky resolves to bring down the house in Broadway style.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: An interstellar teleportation device, found in Egypt, leads to a planet with humans resembling ancient Egyptians who worship the god Ra.

Where to Watch: Available to watch free online (Tubi TV), stream on a subscription service (CBS All Access), stream on a popular TV everywhere service (Epix) & rent or buy from $7.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: When an alien takes the form of a young widow's husband and asks her to drive him from Wisconsin to Arizona, the government tries to stop them.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: After their father is called into work, two young boys, Walter and Danny, are left in the care of their teenage sister, Lisa, and told they must stay inside. Walter and Danny, who anticipate a boring day, are shocked when they begin playing Zathura, a space-themed board game, which they realize has mystical powers when their house is shot into space. With the help of an astronaut, the boys attempt to return home.

Where to Watch: Available to watch free online (Sony Crackle & IMDb TV) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: A team from the intergalactic fast food chain Crumb's Crunchy Delights descends on Earth, planning to make human flesh the newest taste sensation. After they wipe out the New Zealand town Kaihoro, the country's Astro-Investigation and Defense Service is called in to deal with the problem. Things are complicated due to Giles, an aid worker who comes to Kaihoro the same day to collect change from the residents. He is captured by the aliens, and AIaDS stages a rescue mission that quickly becomes an all-out assault on the aliens' headquarters.

Where to Watch: Available to watch free online (PopcornFlix & Tubi TV), stream on a popular subscription service (Prime Video) & rent or buy from $0.99 on 1 service (Prime Video).

What it's about: Thomas Jerome Newton is an alien who has come to Earth in search of water to save his home planet. Aided by lawyer Oliver Farnsworth, Thomas uses his knowledge of advanced technology to create profitable inventions. While developing a method to transport water, Thomas meets Mary-Lou, a quiet hotel clerk, and begins to fall in love with her. Just as he is ready to leave Earth, Thomas is intercepted by the U.S. government, and his entire plan is threatened.

Where to Watch: Available to watch free online (IMDb TV), stream on a subscription service (The Criterion Channel) & rent or buy from $3.99 on 2 services (iTunes & Vudu).

What it's about: Six years ago NASA discovered the possibility of alien life within our solar system. A probe was launched to collect samples, but crashed upon re-entry over Central America. Soon after, new life forms began to appear and half of Mexico was quarantined as an infected zone. Today, the American and Mexican military still struggle to contain "the creatures," while a journalist agrees to escort a shaken tourist through the infected zone in Mexico to the safety of the U.S. border.

Where to Watch: Available to watch free online (Tubi TV), stream on a subscription service (Monsters Nightmares, Shudder & Warriors Gangsters) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Amiable slackers Bill and Ted are once again roped into a fantastical adventure when De Nomolos, a villain from the future, sends evil robot duplicates of the two lads to terminate and replace them. The robot doubles actually succeed in killing Bill and Ted, but the two are determined to escape the afterlife, challenging the Grim Reaper to a series of games in order to return to the land of the living.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular TV everywhere service (Epix) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: In 1959, an alien experiment crashes to earth and infects a fraternity member. They freeze the body, but in the modern day, two geeks pledging a fraternity accidentally thaw the corpse, which proceeds to infect the campus with parasites that transform their hosts into killer zombies.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: When some very creepy things start happening around school, the kids at Herrington High make a chilling discovery that confirms their worst suspicions: their teachers really are from another planet! As mind-controlling parasites rapidly begin spreading from the faculty to the students' bodies, it's ultimately up to the few who are left – an unlikely collection of loners, leaders, nerds and jocks – to save the world from alien domination.

Where to Watch: Available to watch free online (Vudu), stream on a subscription service (Shudder) & rent or buy from $1.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Adventurer/surgeon/rock musician Buckaroo Banzai and his band of men, the Hong Kong Cavaliers, take on evil alien invaders from the 8th dimension.

Where to Watch: Available to watch free online (Tubi TV & Vudu), stream on a popular subscription service (Prime Video), stream on a popular TV everywhere service (Epix) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: When their plans for a nature trip go awry, Polly and boyfriend Seth decide to check into a motel. On their way, they're carjacked and kidnapped by low-rent crooks Dennis and Lacey, who take the victims and their SUV to a nearby gas station. Along the way, they encounter an increasingly terrifying horde of parasites, and if any of them intend to survive, they'll have to outsmart the deadly organisms.

Where to Watch: Available to watch free online (Tubi TV & Vudu), stream on a popular subscription service (Hulu & Shudder) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Inside a darkened house looms a column of TVs littered with VHS tapes, a pagan shrine to forgotten analog gods. The screens crackle and pop endlessly with monochrome vistas of static white noise permeating the brain and fogging concentration. But you must fight the urge to relax: this is no mere movie night. Those obsolete spools contain more than just magnetic tape. They are imprinted with the very soul of evil.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Hulu & Shudder) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Aliens who look like clowns come from outer space and terrorize a small town.

Where to Watch: Available to watch free online (Tubi TV & Vudu), stream on a popular subscription service (Prime Video), stream on a popular TV everywhere service (Epix) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: Led by a strange dream, scientist Aki Ross struggles to collect the eight spirits in the hope of creating a force powerful enough to protect the planet. With the aid of the Deep Eyes Squadron and her mentor, Dr. Sid, Aki must save the Earth from its darkest hate and unleash the spirits within.

Where to Watch: Available to watch free online (Sony Crackle & IMDb TV), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: A space shuttle mission investigating Halley's Comet brings back a malevolent race of space vampires who transform most of London's population into zombies. The only survivor of the expedition and British authorities attempt to capture a mysterious but beautiful alien woman who appears responsible.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 4 services (iTunes, Microsoft & 2 others).

What it's about: Zane Ziminski is an astrophysicist who receives a message that seems to have extraterrestrial origins. Eerily soon after his discovery, Zane is fired. He then embarks on a search to determine the origins of the transmission that leads him into a Hitchcockian labyrinth of paranoia and intrigue.

Where to Watch: Available to watch free online (Tubi TV & Vudu), stream on a popular TV everywhere service (Epix) & rent or buy from $1.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: When scientists discover something in the Arctic that appears to be a buried Pyramid, they send a research team out to investigate. Little do they know that they are about to step into a hunting ground where Aliens are grown as sport for the Predator race.

Where to Watch: Available to watch free online (Sony Crackle), stream on a popular TV everywhere service (IFC) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: 18th century justice catches up with a pair of grave robbers. With only a few hours to go before his date with the guillotine, Arthur Blake (Monaghan) tells his life story to Father Francis Duffy (Ron Perlman). Before long, Arthur spills the beans on how he got started in the grim corpse peddling business with seasoned ghoul Willie Grimes.

Where to Watch: Available to watch free online (PopcornFlix) & rent or buy from $3.99 on 1 service (iTunes).

What it's about: It's the end of yet another night at Hastings Supermarket, a grocery store in Buck Lake, Arizona. But just before closing, a group of masked and armed to the teeth militants invades the store and take everyone hostage

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: With enormous cone-shaped heads, robotlike walks and an appetite for toilet paper, aliens Beldar and Prymatt don't exactly blend in with the population of Paramus, N.J. But for some reason, everyone believes them when they say they're from France.

Where to Watch: Available to watch free online (PopcornFlix & Vudu), stream on a popular subscription service (Prime Video), stream on a popular TV everywhere service (IFC) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: 16-year-old Cassie Sullivan tries to survive in a world devastated by the waves of an alien invasion that has already decimated the population and knocked mankind back to the Stone Age.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Mysterious and unearthly deaths start to occur while Professor Saxton is transporting the frozen remains of a primitive humanoid creature he found in Manchuria back to Europe.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video, Fandor, ConTV & 1 other) & rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

What it's about: In this musical comedy, Valerie is dealing with her philandering fiancé, Ted, when she finds that a trio of aliens have crashed their spaceship into her swimming pool. Once the furry beings are shaved at her girlfriend's salon, the women discover three handsome men underneath. After absorbing the native culture via television, the spacemen are ready to hit the dating scene in 1980s Los Angeles.

Where to Watch: Available to watch free online (Tubi TV), stream on a subscription service (Tribeca Short List), stream on a popular TV everywhere service (Epix) & rent or buy from $1.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Humouristic reconstruction of the 1995 scandal when two British lads were accused of having faked a documentary from the Roswell incident in 1947.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: When a freighter is viciously attacked in the Pacific Ocean, a team of experts -- including biologist Niko Tatopoulos and scientists Elsie Chapman and Mendel Craven -- concludes that an oversized reptile is the culprit. Before long, the giant lizard is loose in Manhattan, destroying everything within its reach. The team chases the monster to Madison Square Garden, where a brutal battle ensues.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: An ancient intergalactic warrior arrives on Earth to put a stop to a demonic child's plot to reproduce Satan's next generation of evil.

Where to Watch: Available to watch free online (PopcornFlix, Tubi TV & Vudu), stream on a subscription service (Shudder) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: In California, an old man grieves the loss of his wife and on the next day he also dies. However, the space soldier Eros and her mate Tanna use an electric device to resurrect them both and the strong Inspector Clay that was murdered by the couple. Their intention is not to conquest Earth but to stop mankind from developing the powerful bomb “Solobonite” that would threaten the universe. When the population of Hollywood and Washington DC sees flying saucers on the sky, a colonel, a police lieutenant, a commercial pilot, his wife and a policeman try to stop the aliens.

Where to Watch: Available to watch free online (SnagFilms & Tubi TV), stream on a popular subscription service (Prime Video, Fandor, FilmBox & 1 other) & rent or buy from $2.00 on 7 services (iTunes, Google Play & 5 others).

What it's about: A prince and a fellowship of companions set out to rescue his bride from a fortress of alien invaders who have arrived on their home planet.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: A young farmer assembles a band of diverse mercenaries to defend his peaceful planet from an evil tyrant.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

What it's about: Ratchet and Clank tells the story of two unlikely heroes as they struggle to stop a vile alien named Chairman Drek from destroying every planet in the Solana Galaxy. When the two stumble upon a dangerous weapon capable of destroying entire planets, they must join forces with a team of colorful heroes called The Galactic Rangers in order to save the galaxy. Along the way they'll learn about heroism, friendship, and the importance of discovering one's own identity.

Where to Watch: Available to watch free online (IMDb TV) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: A shower of meteorites produces a rare night time spectacle that blinds anyone that looks at it. As it was such a beautiful sight, most people were watching, and as a consequence, 99% of the World's population go completely blind. In the original novel, this chaos results in the escape of Triffids: farmed plants harvested for their oils, which are capable of moving themselves around and are carnivorous. In this film version, however, the Triffids are not indigenous plants. Instead they are space aliens whose spores have arrived in this and an earlier meteor shower. Derided by the original novel's author, John Wyndham, for straying so far away from the source material.

Where to Watch: Available to watch free online (Tubi TV) & rent or buy from $0.99 on 1 service (Prime Video).

What it's about: In the town of Dillford, humans, vampires and zombies were all living in peace - until the alien apocalypse arrived. Now three teenagers-one human, one vampire, and one zombie-have to team up to figure out how to get rid of the visitors.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: A batch of unhatched critter eggs are mistaken for Easter eggs by the country-folk inhabitants of Grover's Bend and, before long, the ferocious furballs are on the rampage again.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Filmmaker Ricardo Trogi recalls the events surrounding his family moving to a new neighborhood when he was 11-years-old.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video & Kanopy) & rent or buy from $3.99 on 1 service (Prime Video).

What it's about: When astronaut Spencer Armacost returns to Earth after a mission that nearly cost him his life, he decides to take a desk job in order to see his beautiful wife, Jillian, more often. Gradually, Jillian notices that Spencer's personality seems to have changed, but her concerns fade when she discovers that she's pregnant. As Jillian grows closer to becoming a mother, her suspicions about Spencer return. Why does it seem as if he's a different person?

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Melanie Ballard is a hard nosed police chief in the year 2025. She and a police snatch squad are sent to Mars to apprehend dangerous criminal James Williams. Mars has been occupied by humans for some time and they have set up mining facilities. The mining activities on Mars have unleashed the spirits of alien beings who gradually possess the bodies of the workers. It soon turns out that catching the dangerous fugitive takes a back seat as the alien spirits begin to rid their planet of the 'invaders'.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Godzilla saves Tokyo from a flying saucer that transforms into the beast Orga.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 8 services (iTunes, Google Play & 6 others).

What it's about: Trying to rescue her home planet from destruction, a gorgeous extraterrestrial named Celeste arrives on Earth and begins her scientific research. She woos quirky scientist Dr. Steve Mills, a widower with a young daughter. Before long, Celeste finds herself in love with Steve and her new life on Earth, where she experiences true intimacy for the first time. But when she loses sight of her mission, she begins to question where she belongs.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: Three women makes an emergency landing on a planet plagued with a fatal disease, but are captured by dictator Overdog. Adventurer Wolff goes there to rescue them and meets Niki, the only Earthling left from a medical expedition. Combining their talents, they try to rescue the women.

Where to Watch: Available to watch free online (Sony Crackle) & rent or buy from $2.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: On a deep space mining mission to a remote planet, an ancient religious relic - thought to be proof of the existence of God - is unearthed and brought aboard. When the unholy artifact unleashes a long-dormant alien race, its glimpse of Heaven transforms the ship into a living Hell. A prequel to the events of the 2008 video game Dead Space.

Where to Watch: Available to watch free online (Tubi TV) & rent or buy from $1.99 on 7 services (iTunes, Google Play & 5 others).

What it's about: In the year 2044 AD, the human race has amped-up its space exploration and reached out to the stars through the miracle of ROBOTECHNOLOGY, but not without bringing intergalactic war upon the Earth itself. Heroes will die and allegiances will shift. But in the midst of combat, perhaps peace will spring up through the charred remains of battered history. One of the greatest science fiction sagas of all time continues...

Where to Watch: Available to watch free online (Sony Crackle), stream on a popular subscription service (Prime Video & Ameba) & rent or buy from $1.99 on 1 service (Prime Video).

What it's about: Sean Barker became the unwilling host to an alien bio-armor known as the Guyver. A year ago he destroyed the Kronos Corporation, an organization of mutants who want the Guyver. Now he is trying to find why the Guyver unit forces him to fight and kill evil.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: An untold chapter in the Mass Effect saga, following the early career of Alliance Marine, James Vega, as he leads a squad of elite special forces into battle against a mysterious alien threat known as The Collectors. Stationed at a colony in a remote star system, Vega and his troops must protect the inhabitants from an invasion of the deadly insectoid warriors determined to collect the population for unknown purposes. Soon after the attack, Vega's commanding officer falls in battle, forcing the young officer to embrace the responsibility of leadership for the colony's survival. Having idolized Earth's greatest hero and warrior, Commander Shepard (the central character in the Mass Effect video games), the young and idealistic Vega must now make life and the death decisions that will effect not only the lives of his squad, but the lives of every person in the colony - all of whom he has sworn to protect...

Where to Watch: Available to watch free online (Yahoo View), stream on a popular subscription service (Hulu) & rent or buy from $2.99 on 2 services (Prime Video & Vudu).

What it's about: A group of hikers lost on the Appalachian Trail stumble across an ancient secret that threatens their survival.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video & Hulu) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

What it's about: Seven teens head up to a cabin on the lake for spring break. Mike has studied all horror films on video, and recognizes the signs of foreshadowing of doom. The others dismiss his concerns as the workings of a person that watches too many videos, but there really is something out there, and the teens begin experiencing an attrition problem when they start stumbling into all the cliches found in a typical teen horror film.

Where to Watch: Available to watch free online (Tubi TV), stream on a popular subscription service (Prime Video) & rent or buy from $2.99 on 1 service (Prime Video).