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The Best Alien Movies and TV Shows on Free Services

Finding a good Alien movie and TV show to watch can be hard, so we've ranked the best ones and included where to watch them. Check out our list of the best Alien movies and TV shows of all time streaming on Free Services.

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1. Rick and Morty

IMDB LogoIMDB Star
9.2/10
Rotten Tomatoes Logo94%
Reelgood Logo
98/100
Year: 2013-2020Rated: TV-MASeasons: 4
Animation, Comedy

What it's about: Rick is a mentally-unbalanced but scientifically-gifted old man who has recently reconnected with his family. He spends most of his time involving his young grandson Morty in dangerous, outlandish adventures throughout space and alternate universes. Compounded with Morty's already unstable family life, these events cause Morty much distress at home and school.

Where to Watch: 5 episodes (12%) are available to watch free online (Adult Swim). 40 episodes (95%) are available to stream on a popular subscription service (HBO MAX, Hulu & fuboTV). 10 episodes (24%) are available to stream on a TV everywhere service (Adult Swim). 41 episodes (98%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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2. One-Punch Man

IMDB LogoIMDB Star
8.8/10
Rotten Tomatoes Logo100%
Reelgood Logo
90/100
Year: 2015-2020Rated: TV-14Seasons: 2
Animation, Anime

What it's about: Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong—even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?

Where to Watch: 15 episodes (60%) are available to watch free online (Adult Swim, Crunchyroll & Tubi). 24 episodes (96%) are available to stream on a popular subscription service (Netflix, Hulu & fuboTV). 18 episodes (72%) are available to stream on a TV everywhere service (Adult Swim). 13 episodes (52%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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3. Futurama

IMDB LogoIMDB Star
8.4/10
Rotten Tomatoes Logo95%
Reelgood Logo
88/100
Year: 1999-2020Rated: TV-14Seasons: 11
Science-Fiction, Animation

What it's about: The adventures of a late-20th-century New York City pizza delivery boy, Philip J. Fry, who, after being unwittingly cryogenically frozen for one thousand years, finds employment at Planet Express, an interplanetary delivery company in the retro-futuristic 31st century.

Where to Watch: 10 episodes (7%) are available to watch free online (Syfy). 135 episodes (95%) are available to stream on a popular subscription service (Hulu & fuboTV). 7 episodes (5%) are available to stream on a TV everywhere service (Comedy Central). 142 episodes (100%) are available to rent or buy from $0.99 on 5 services (iTunes, Google Play & 3 others).

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4. The X-Files

IMDB LogoIMDB Star
8.6/10
Rotten Tomatoes Logo75%
Reelgood Logo
86/100
Year: 1993-2020Rated: TV-14Seasons: 11
Drama, Science-Fiction

What it's about: The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena. Mulder believes in the existence of aliens and the paranormal while Scully, a skeptic, is assigned to make scientific analyses of Mulder's discoveries that debunk Mulder's work and thus return him to mainstream cases.

Where to Watch: 3 episodes (1%) are available to watch free online (FOX). 218 episodes (100%) are available to stream on a popular subscription service (Hulu & fuboTV). 10 episodes (5%) are available to stream on a TV everywhere service (BBC America). 219 episodes (100%) are available to rent or buy from $1.99 on 7 services (iTunes, Google Play & 5 others).

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5. Star Trek: First Contact

IMDB LogoIMDB Star
7.6/10
Rotten Tomatoes Logo93%
Reelgood Logo
86/100
Released: 1996Rated: PG-13
Action & Adventure, Science-Fiction

What it's about: The Borg, a relentless race of cyborgs, are on a direct course for Earth. Violating orders to stay away from the battle, Captain Picard and the crew of the newly-commissioned USS Enterprise E pursue the Borg back in time to prevent the invaders from changing Federation history and assimilating the galaxy.

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

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6. Dark City

IMDB LogoIMDB Star
7.6/10
Rotten Tomatoes Logo76%
Reelgood Logo
84/100
Released: 1998Rated: R
Drama, Fantasy

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 5 services (iTunes, Google Play & 3 others).

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7. Invasion of the Body Snatchers

IMDB LogoIMDB Star
7.7/10
Rotten Tomatoes Logo98%
Reelgood Logo
82/100
Released: 1956
Horror, Science-Fiction

What it's about: A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

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

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8. Starship Troopers

IMDB LogoIMDB Star
7.2/10
Rotten Tomatoes Logo64%
Reelgood Logo
82/100
Released: 1997Rated: R
Action & Adventure, Science-Fiction

What it's about: Set in the future, the story follows a young soldier named Johnny Rico and his exploits in the Mobile Infantry. Rico's military career progresses from recruit to non-commissioned officer and finally to officer against the backdrop of an interstellar war between mankind and an arachnoid species known as "the Bugs".

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

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9. Waiting for Guffman

IMDB LogoIMDB Star
7.5/10
Rotten Tomatoes Logo91%
Reelgood Logo
81/100
Released: 1996Rated: R
Comedy

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 $3.99 on 6 services (iTunes, Google Play & 4 others).

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10. Battlestar Galactica

IMDB LogoIMDB Star
8.6/10
Rotten Tomatoes Logo82%
Reelgood Logo
81/100
Year: 2004-2020Rated: TV-14Seasons: 4
Action & Adventure, Fantasy

What it's about: When an old enemy, the Cylons, resurface and obliterate the 12 colonies, the crew of the aged Galactica protect a small civilian fleet - the last of humanity - as they journey toward the fabled 13th colony, Earth.

Where to Watch: 72 episodes (94%) are available to watch free online (Syfy). 1 episodes (1%) are available to stream on a popular subscription service (Hulu). 1 episodes (1%) are available to stream on a popular TV everywhere service (Syfy). 75 episodes (97%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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11. The Hitchhiker's Guide to the Galaxy

IMDB LogoIMDB Star
6.8/10
Rotten Tomatoes Logo60%
Reelgood Logo
79/100
Released: 2005Rated: PG
Comedy, Science-Fiction

What it's about: Mere seconds before the Earth is to be demolished by an alien construction crew, Arthur Dent is swept off the planet by his friend Ford Prefect, a researcher penning a new edition of "The Hitchhiker's Guide to the Galaxy."

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

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12. Ender's Game

IMDB LogoIMDB Star
6.6/10
Rotten Tomatoes Logo62%
Reelgood Logo
77/100
Released: 2013Rated: PG-13
Action & Adventure, Science-Fiction

What it's about: Based on the classic novel by Orson Scott Card, Ender's Game is the story of the Earth's most gifted children training to defend their homeplanet in the space wars of the future.

Where to Watch: Available to watch free online (Tubi & IMDb TV) & rent or buy from $3.99 on 7 services (iTunes, Google Play & 5 others).

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13. Monsters vs Aliens

IMDB LogoIMDB Star
6.4/10
Rotten Tomatoes Logo73%
Reelgood Logo
76/100
Released: 2009Rated: PG
Animation, Action & Adventure

What it's about: When Susan Murphy is unwittingly clobbered by a meteor full of outer space gunk on her wedding day, she mysteriously grows to 49-feet-11-inches. The military jumps into action and captures Susan, secreting her away to a covert government compound. She is renamed Ginormica and placed in confinement with a ragtag group of Monsters...

Where to Watch: Available to watch free online (IMDb TV), stream on a popular subscription service (HBO MAX) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

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14. Caprica

IMDB LogoIMDB Star
7.1/10
Rotten Tomatoes Logo81%
Reelgood Logo
74/100
Year: 2010-2020Rated: TV-14Seasons: 1
Drama, Science-Fiction

What it's about: Set 58 years before Battlestar Galactica, Caprica follows two rival families - the Graystones and the Adamas - as they grow, compete, and thrive in the vibrant world of the peaceful 12 Colonies, living in a society close to our own. Entangled in the burgeoning technology of artificial intelligence and robotics that will eventually lead to the creation of the Cylons, the two houses go toe-to-toe, blending action with corporate conspiracy and sexual politics.

Where to Watch: 17 episodes (85%) are available to watch free online (NBC). 20 episodes (100%) are available to rent or buy from $1.99 on 6 services (iTunes, Google Play & 4 others).

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15. Invasion

IMDB LogoIMDB Star
7.5/10
Rotten Tomatoes Logo100%
Reelgood Logo
74/100
Year: 2005-2020Rated: TV-14Seasons: 1
Drama, Science-Fiction

What it's about: Invasion is an American science fiction television series that aired on ABC for only one season beginning in September 21, 2005. Somewhat similar to Invasion of the Body Snatchers, the show told the story of the aftermath of a hurricane in which water-based creatures infiltrate a small Florida town and begin to take over the bodies of the town's inhabitants through a cloning process. The show was produced by Shaun Cassidy Productions and Warner Bros. Television. Due to Hurricane Katrina in 2005 and the aftermath in the southern United States, early on-air promotions were quickly pulled by ABC. The advertising then switched emphasis completely to the alien invasion aspect of the series, while the hurricane received no mention. The premiere was also preceded with a warning that the show featured images of a fictional hurricane that viewers could be sensitive to.

Where to Watch: 21 episodes (64%) are available to watch free online (IMDb TV). 33 episodes (100%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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16. Explorers

IMDB LogoIMDB Star
6.6/10
Rotten Tomatoes Logo77%
Reelgood Logo
73/100
Released: 1985Rated: PG
Children, Science-Fiction

What it's about: The visionary dreams of three curious and adventuresome young boys become an exciting reality in Explorers, the action-fantasy from director Joe Dante, who combines keen humor, warmth and fantasy with unexpected twists. In their makeshift laboratory, the boys use an amazing discovery and their ingenuity to build their own spaceship and launch themselves on a fantastic interplanetary journey.

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

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17. Bad Taste

IMDB LogoIMDB Star
6.6/10
Rotten Tomatoes Logo68%
Reelgood Logo
73/100
Released: 1987Rated: R
Comedy, Cult

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 (AIaDS) 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), stream on a popular subscription service (Prime Video) & rent or buy from $0.99 on 1 service (Prime Video).

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18. Parasyte -the maxim-

IMDB LogoIMDB Star
8.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
73/100
Year: 2014-2020Rated: TV-MASeasons: 1
Action & Adventure, Anime

What it's about: Shinichi Izumi is a normal high school boy whose right hand has become infected with an alien parasite that names itself "Migi" ("right"). Migi is the first parasite to develop a symbiotic relationship with its host, as he and Shinichi slowly develop a grudging friendship. Migi isn't the only Parasite on earth, however, and as cases of Parasites killing humans begin to emerge, humans seek to kill off Parasites. Shinichi and Migi find themselves caught in between these two sides of the struggle over planet earth.

Where to Watch: 24 episodes (86%) are available to watch free online (Crunchyroll). 28 episodes (100%) are available to stream on a popular subscription service (Netflix & Hulu). 28 episodes (100%) are available to rent or buy from $1.99 on 3 services (iTunes, Prime Video & Vudu).

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19. Krypton

IMDB LogoIMDB Star
6.9/10
Rotten Tomatoes Logo80%
Reelgood Logo
73/100
Year: 2018-2020Rated: TV-14Seasons: 2
Action & Adventure, Science-Fiction

What it's about: Set two generations before the destruction of the legendary Man of Steel’s home planet, Krypton follows Superman’s grandfather — whose House of El was ostracized and shamed — as he fights to redeem his family’s honor and save his beloved world from chaos.

Where to Watch: 5 episodes (24%) are available to watch free online (Syfy). 10 episodes (48%) are available to stream on a subscription service (DC Universe). 21 episodes (100%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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20. Ancient Aliens

IMDB LogoIMDB Star
7.3/10
Rotten Tomatoes LogoN/A
Reelgood Logo
73/100
Year: 2010-2020Rated: TV-PGSeasons: 15
Documentary, History

What it's about: Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.

Where to Watch: 31 episodes (13%) are available to watch free online (IMDb TV). 145 episodes (59%) are available to stream on a popular subscription service (Netflix & Hulu). 176 episodes (72%) are available to stream on a TV everywhere service (History). 215 episodes (88%) are available to rent or buy from $1.99 on 6 services (iTunes, Google Play, Prime Video & 4 others).

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21. Monsters

IMDB LogoIMDB Star
6.4/10
Rotten Tomatoes Logo73%
Reelgood Logo
72/100
Released: 2010Rated: R
Drama, Science-Fiction

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), stream on a subscription service (Monsters Nightmares & Warriors Gangsters) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

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22. Killer Klowns from Outer Space

IMDB LogoIMDB Star
6.2/10
Rotten Tomatoes Logo78%
Reelgood Logo
72/100
Released: 1988Rated: PG-13
Comedy, Horror

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), stream on a popular subscription service (Netflix) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

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23. ALF

IMDB LogoIMDB Star
7.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
72/100
Year: 1986-2020Rated: TV-GSeasons: 4
Comedy, Family

What it's about: A furry alien wiseguy comes to live with a terran family after crashing into their garage.

Where to Watch: 104 episodes (99%) are available to watch free online (Tubi, Vudu & IMDb TV). 15 episodes (14%) are available to stream on a popular subscription service (Prime Video & Starz). 105 episodes (100%) are available to rent or buy from $0.99 on 5 services (iTunes, Google Play & 3 others).

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24. 3rd Rock from the Sun

IMDB LogoIMDB Star
7.7/10
Rotten Tomatoes LogoN/A
Reelgood Logo
72/100
Year: 1996-2020Rated: TV-PGSeasons: 6
Comedy, Science-Fiction

What it's about: 3rd Rock from the Sun is an American sitcom that aired from 1996 to 2001 on NBC. The show is about four extraterrestrials who are on an expedition to Earth, which they consider to be a very insignificant planet. The extraterrestrials pose as a human family in order to observe the behavior of human beings.

Where to Watch: 139 episodes (100%) are available to watch free online (Sony Crackle, Tubi & Vudu). 139 episodes (100%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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25. Extant

IMDB LogoIMDB Star
6.6/10
Rotten Tomatoes Logo77%
Reelgood Logo
71/100
Year: 2014-2020Rated: TV-14Seasons: 2
Drama, Science-Fiction

What it's about: An astronaut returns home from a year long solo mission in space. She tries to reconnect with her husband and son in their everyday life. Her experiences in space and home lead to events that ultimately will change the course of human history.

Where to Watch: 24 episodes (92%) are available to watch free online (CW Seed). 24 episodes (92%) are available to stream on a popular subscription service (Prime Video & CBS All Access). 24 episodes (92%) are available to rent or buy from $1.99 on 1 service (Prime Video).

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26. The Adventures of Buckaroo Banzai Across the 8th Dimension

IMDB LogoIMDB Star
6.3/10
Rotten Tomatoes Logo69%
Reelgood Logo
70/100
Released: 1984Rated: PG
Action & Adventure, Comedy

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 (Vudu & IMDb TV) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

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27. Splinter

IMDB LogoIMDB Star
6.1/10
Rotten Tomatoes Logo75%
Reelgood Logo
69/100
Released: 2008Rated: R
Horror, Science-Fiction

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 & Vudu) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

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28. V/H/S/2

IMDB LogoIMDB Star
6.0/10
Rotten Tomatoes Logo70%
Reelgood Logo
69/100
Released: 2013Rated: R
Horror, Thriller

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 (Sony Crackle, PopcornFlix & Tubi), stream on a subscription service (Monsters Nightmares) & rent or buy from $2.99 on 6 services (iTunes, Google Play & 4 others).

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29. The Event

IMDB LogoIMDB Star
7.0/10
Rotten Tomatoes Logo67%
Reelgood Logo
68/100
Year: 2010-2020Rated: TV-14Seasons: 1
Action & Adventure, Drama

What it's about: The Event is an emotional, high-octane conspiracy thriller that follows Sean Walker, an everyman who investigates the mysterious disappearance of his would-be fiancée Leila, and unwittingly begins to expose the biggest cover-up in U.S. history.

Where to Watch: 22 episodes (100%) are available to watch free online (NBC). 1 episodes (5%) are available to stream on a popular subscription service (Hulu). 22 episodes (100%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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30. FLCL

IMDB LogoIMDB Star
8.2/10
Rotten Tomatoes LogoN/A
Reelgood Logo
68/100
Year: 2000-2020Rated: TV-MASeasons: 3
Animation, Anime

What it's about: Naota is a normal Japanese 6th grade boy although a little cynical. When his older brother leaves for America to play baseball, his brother leaves his 17 year old girlfriend Mamimi behind. Mamimi is sending mixed signals and make advances on Naota, and he doesn't know what to do about her. But to make matters worse, Naota's world is totally turned upside down when he is run over by a woman on a Vespa. During their first encounter, she hits him over the head with her guitar, which then causes a horn to grow out of his forehead. She calls herself "Haruko" and her presence changes Naota's life to even further insanity.

Where to Watch: 18 episodes (100%) are available to watch free online (Adult Swim). 11 episodes (61%) are available to stream on a subscription service (fuboTV & Funimation). 6 episodes (33%) are available to rent or buy from $1.99 on 3 services (iTunes, Google Play & Prime Video).

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31. Dark Skies

IMDB LogoIMDB Star
6.3/10
Rotten Tomatoes Logo41%
Reelgood Logo
68/100
Released: 2013Rated: PG-13
Horror, Science-Fiction

What it's about: From the producers of Paranormal Activity, Insidious, and Sinister comes Dark Skies: a supernatural thriller that follows a young family living in the suburbs. As husband and wife Daniel and Lacey Barret witness an escalating series of disturbing events involving their family, their safe and peaceful home quickly unravels. When it becomes clear that the Barret family is being targeted by an unimaginably terrifying and deadly force, Daniel and Lacey take matters in their own hands to solve the mystery of what is after their family.

Where to Watch: Available to watch free online (Tubi, Vudu & IMDb TV), stream on a popular TV everywhere service (Syfy) & rent or buy from $3.99 on 3 services (iTunes, Prime Video & Vudu).

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32. Knowing

IMDB LogoIMDB Star
6.2/10
Rotten Tomatoes Logo33%
Reelgood Logo
68/100
Released: 2009Rated: PG-13
Action & Adventure, Drama

What it's about: A teacher opens a time capsule that has been dug up at his son's elementary school; in it are some chilling predictions -- some that have already occurred and others that are about to -- that lead him to believe his family plays a role in the events that are about to unfold.

Where to Watch: Available to watch free online (Vudu) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

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33. Roswell, New Mexico

IMDB LogoIMDB Star
6.1/10
Rotten Tomatoes Logo55%
Reelgood Logo
67/100
Year: 2019-2020Rated: TV-14Seasons: 2
Drama, Mystery

What it's about: After reluctantly returning to her tourist-trap hometown of Roswell, New Mexico, the daughter of undocumented immigrants discovers a shocking truth about her teenage crush who is now a police officer: He’s an alien who has kept his unearthly abilities hidden his entire life. She protects his secret as the two reconnect and begin to investigate his origins, but when a violent attack and long-standing government cover-up point to a greater alien presence on Earth, the politics of fear and hatred threaten to expose him and destroy their deepening romance.

Where to Watch: 5 episodes (21%) are available to watch free online (The CW). 17 episodes (71%) are available to stream on a popular subscription service (Netflix & fuboTV). 24 episodes (100%) are available to rent or buy from $1.99 on 3 services (Google Play, Vudu & YouTube).

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34. Destroy All Monsters

IMDB LogoIMDB Star
6.5/10
Rotten Tomatoes Logo75%
Reelgood Logo
67/100
Released: 1968Rated: G
Science-Fiction, Action & Adventure

What it's about: At the turn of the century, the Earth's monsters have been rounded up and safely kept on Monsterland. The peace however is broken when a race of she-aliens, the Kilaaks, unleash the monsters across the world.

Where to Watch: Available to watch free online (Tubi), stream on a popular subscription service (HBO MAX & The Criterion Channel) & rent or buy from $2.99 on 1 service (Vudu).

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35. The Arrival

IMDB LogoIMDB Star
6.3/10
Rotten Tomatoes Logo64%
Reelgood Logo
67/100
Released: 1996Rated: PG-13
Action & Adventure, Mystery

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, Vudu & IMDb TV) & rent or buy from $3.99 on 6 services (iTunes, Google Play & 4 others).

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36. The War of the Worlds

IMDB LogoIMDB Star
7.1/10
Rotten Tomatoes LogoN/A
Reelgood Logo
67/100
Released: 1953Rated: PG
Action & Adventure, Science-Fiction

What it's about: The residents of a small town are excited when a flaming meteor lands in the hills, until they discover it is the first of many transport devices from Mars bringing an army of invaders invincible to any man-made weapon, even the atomic bomb.

Where to Watch: Available to watch free online (Sony Crackle & PopcornFlix), stream on a subscription service (CBS All Access & Kanopy) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

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37. 20 Million Miles to Earth

IMDB LogoIMDB Star
6.4/10
Rotten Tomatoes Logo80%
Reelgood Logo
64/100
Released: 1957
Science-Fiction, Action & Adventure

What it's about: When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.

Where to Watch: Available to watch free online (Tubi) & rent or buy from $2.99 on 5 services (iTunes, Google Play & 3 others).

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38. Fire in the Sky

IMDB LogoIMDB Star
6.6/10
Rotten Tomatoes Logo42%
Reelgood Logo
64/100
Released: 1993Rated: PG-13
Biography, Drama

What it's about: A group of men who were clearing bush for the government arrive back in town, claiming that their friend was abducted by aliens. Nobody believes them, and despite a lack of motive and no evidence of foul play, their friends' disappearance is treated as murder.

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

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39. Alien Raiders

IMDB LogoIMDB Star
5.6/10
Rotten Tomatoes Logo100%
Reelgood Logo
64/100
Released: 2008Rated: R
Action & Adventure, Horror

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 5 services (iTunes, Google Play & 3 others).

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40. The Day of the Triffids

IMDB LogoIMDB Star
6.2/10
Rotten Tomatoes Logo76%
Reelgood Logo
64/100
Released: 1962
Horror, Science-Fiction

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), stream on a popular subscription service (Prime Video) & rent or buy from $0.99 on 1 service (Prime Video).

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41. Jeff & Some Aliens

IMDB LogoIMDB Star
8.0/10
Rotten Tomatoes Logo100%
Reelgood Logo
63/100
Year: 2017-2020Rated: TV-14Seasons: 1
Animation, Comedy

What it's about: Based on the recurring TripTank sketches, Jeff And Some Aliens follows Jeff, the world’s most average guy, and the three aliens sent to study him to determine whether or not humanity should be destroyed. Jeff’s mundane life is constantly thrown into chaos by his extraterrestrial guests – it isn’t always easy having roommates who force you to participate in grueling intergalatic decathalons or perform Azurian honor killings to restore interstellar balance

Where to Watch: 1 episodes (10%) are available to watch free online (Comedy Central). 9 episodes (90%) are available to stream on a TV everywhere service (Comedy Central). 10 episodes (100%) are available to rent or buy from $1.99 on 5 services (iTunes, Google Play & 3 others).

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42. Horror Express

IMDB LogoIMDB Star
6.5/10
Rotten Tomatoes Logo67%
Reelgood Logo
63/100
Released: 1972Rated: R
Horror, Science-Fiction

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 (PopcornFlix & Tubi), stream on a subscription service (Fandor, ConTV, Secrets of Cinema & 1 other) & rent or buy from $1.99 on 3 services (iTunes, Google Play & Microsoft).

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43. Body Snatchers

IMDB LogoIMDB Star
5.9/10
Rotten Tomatoes Logo71%
Reelgood Logo
62/100
Released: 1993Rated: R
Science-Fiction, Horror

What it's about: When Environmental Protection Agency inspector Steve Malone travels to a remote military base in order to check for toxic materials, he brings his family along for the ride. After arriving at the base, his teenage daughter Marti befriends Jean Platt, daughter of the base's commander, General Platt. When people at the base begin acting strangely, Marti becomes convinced that they are slowly being replaced by plant-like aliens.

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

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44. The Greatest American Hero

IMDB LogoIMDB Star
7.3/10
Rotten Tomatoes LogoN/A
Reelgood Logo
62/100
Year: 1981-2020Rated: TV-PGSeasons: 3
Action & Adventure, Comedy

What it's about: The chronicles of teacher Ralph Hinkley's adventures after a group of aliens gives him a red suit that gives him superhuman abilities. Unfortunately, Ralph, who hates wearing the suit, immediately loses its instruction booklet, and thus has to learn how to use its powers by trial and error, often with comical results.

Where to Watch: 44 episodes (90%) are available to watch free online (Tubi & Vudu). 3 episodes (6%) are available to stream on a popular subscription service (Prime Video, Hulu & ConTV). 48 episodes (98%) are available to rent or buy from $1.99 on 2 services (iTunes & Prime Video).

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45. Wander Over Yonder

IMDB LogoIMDB Star
7.2/10
Rotten Tomatoes LogoN/A
Reelgood Logo
62/100
Year: 2013-2020Rated: TV-PGSeasons: 2
Action & Adventure, Comedy

What it's about: The adventures of Wander, an eternally-optimistic intergalactic traveler and constant do-gooder, and his quick-tempered but loyal steed and best friend, Sylvia. The friendliest face in outer space, Wander journeys across the galaxies to spread good cheer and to help anyone he can — much to his overly pragmatic stallion’s chagrin. Their fun-loving escapades often lead them to clash with the evil villain Lord Hater and his army of Watchdogs, who travel from planet to planet trying to make hate the order of the day. Together, the best friends travel through the cosmos, happening upon one freewheeling adventure after another and making new friends and foes.

Where to Watch: 5 episodes (6%) are available to watch free online (DisneyXD & DisneyNOW). 38 episodes (47%) are available to stream on a TV everywhere service (DisneyXD & DisneyNOW). 55 episodes (68%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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46. Ben 10: Omniverse

IMDB LogoIMDB Star
5.7/10
Rotten Tomatoes LogoN/A
Reelgood Logo
62/100
Year: 2012-2020Rated: TV-PGSeasons: 8
Animation, Action & Adventure

What it's about: A year after the events that took place during the "Final Battle" and after the destruction of Omnitrix, 16-year-old Ben Tennyson has to face new enemies.

Where to Watch: 2 episodes (1%) are available to watch free online (Cartoon Network). 80 episodes (53%) are available to stream on a popular subscription service (HBO MAX & Hulu). 1 episodes (1%) are available to stream on a TV everywhere service (Cartoon Network). 120 episodes (79%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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47. Escape from Planet Earth

IMDB LogoIMDB Star
5.9/10
Rotten Tomatoes Logo35%
Reelgood Logo
62/100
Released: 2013Rated: PG
Animation, Action & Adventure

What it's about: Astronaut Scorch Supernova finds himself caught in a trap when he responds to an SOS from a notoriously dangerous alien planet.

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

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48. Blood Blockade Battlefront