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The Best Alien TV Shows on Free Services

Finding a good Alien 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 TV shows of all time streaming on Free Services.

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1. The X-Files

IMDB LogoIMDB Star
8.7/10
Rotten Tomatoes Logo75%
Reelgood Logo
86/100
Year: 1993-2019Rated: 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: 5 episodes (2%) are available to watch free online (FOX). 219 episodes (100%) are available to stream on a popular subscription service (Prime Video & Hulu). 208 episodes (95%) are available to stream on a TV everywhere service (BBC America & FOX). 219 episodes (100%) are available to rent or buy from $1.99 on 8 services (iTunes, Google Play & 6 others).

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2. 3rd Rock from the Sun

IMDB LogoIMDB Star
7.8/10
Rotten Tomatoes LogoN/A
Reelgood Logo
70/100
Year: 1996-2019Rated: 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 (Tubi TV). 139 episodes (100%) are available to stream on a popular subscription service (Prime Video). 139 episodes (100%) are available to rent or buy from $1.99 on 3 services (iTunes, Google Play & Prime Video).

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3. Caprica

IMDB LogoIMDB Star
7.1/10
Rotten Tomatoes Logo81%
Reelgood Logo
70/100
Year: 2010-2019Rated: 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 (IMDb TV). 20 episodes (100%) are available to rent or buy from $1.99 on 6 services (iTunes, Google Play & 4 others).

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4. Parasyte -the maxim-

IMDB LogoIMDB Star
8.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
69/100
Year: 2014-2019Rated: 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 (96%) are available to watch free online (Crunchyroll). 24 episodes (96%) are available to stream on a popular subscription service (Hulu). 24 episodes (96%) are available to rent or buy from $1.99 on 2 services (iTunes & Prime Video).

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5. FLCL

IMDB LogoIMDB Star
8.3/10
Rotten Tomatoes LogoN/A
Reelgood Logo
68/100
Year: 2000-2019Rated: TV-MASeasons: 3
Animation, Anime

What it's about: A 12-year old boy named Naota one day meets a strange woman, riding a Vespa and wielding a big guitar. As soon as she appears, mysterious things start happening.

Where to Watch: 16 episodes (84%) are available to watch free online (Adult Swim). 6 episodes (32%) are available to stream on a popular subscription service (Hulu). 2 episodes (11%) are available to stream on a TV everywhere service (Adult Swim). 6 episodes (32%) are available to rent or buy from $1.99 on 3 services (iTunes, Google Play & Prime Video).

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6. Ancient Aliens

IMDB LogoIMDB Star
7.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
68/100
Year: 2010-2019Rated: TV-PGSeasons: 14
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: 14 episodes (7%) are available to watch free online (History). 159 episodes (81%) are available to stream on a popular subscription service (Prime Video & Hulu). 169 episodes (86%) are available to stream on a TV everywhere service (History). 187 episodes (95%) are available to rent or buy from $1.99 on 7 services (iTunes, Google Play & 5 others).

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7. The Event

IMDB LogoIMDB Star
7.0/10
Rotten Tomatoes Logo67%
Reelgood Logo
66/100
Year: 2010-2019Rated: 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). 22 episodes (100%) are available to stream on a popular subscription service (Hulu). 22 episodes (100%) are available to stream on a TV everywhere service (NBC). 22 episodes (100%) are available to rent or buy from $1.99 on 8 services (iTunes, Google Play & 6 others).

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8. V

IMDB LogoIMDB Star
7.3/10
Rotten Tomatoes Logo46%
Reelgood Logo
66/100
Year: 2009-2019Rated: TV-14Seasons: 2
Drama, Science-Fiction

What it's about: V is an American science fiction television series that ran for two seasons on ABC, from November 3, 2009 to March 15, 2011. A remake of the 1983 miniseries created by Kenneth Johnson, the new series chronicles the arrival on Earth of a technologically advanced alien species which ostensibly comes in peace, but actually has sinister motives. V stars Morena Baccarin, Lourdes Benedicto, Morris Chestnut, Joel Gretsch, Logan Huffman, Charles Mesure, Elizabeth Mitchell, Laura Vandervoort and Scott Wolf, and was executive produced by Scott Rosenbaum, Yves Simoneau, Scott Peters, and Jace Hall. The series was produced by The Scott Peters Company, HDFilms and Warner Bros. Television.

Where to Watch: 22 episodes (76%) are available to watch free online (Tubi TV). 22 episodes (76%) are available to stream on a popular subscription service (Prime Video). 29 episodes (100%) are available to rent or buy from $1.99 on 6 services (iTunes, Google Play & 4 others).

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9. ALF

IMDB LogoIMDB Star
7.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
63/100
Year: 1986-2019Rated: 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: 103 episodes (99%) are available to watch free online (Tubi TV & IMDb TV). 1 episodes (1%) are available to stream on a subscription service (ComicCon HQ). 104 episodes (100%) are available to rent or buy from $0.99 on 3 services (iTunes, Prime Video & Microsoft).

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10. He-Man and the Masters of the Universe

IMDB LogoIMDB Star
7.5/10
Rotten Tomatoes LogoN/A
Reelgood Logo
63/100
Year: 1983-2019Rated: TV-PGSeasons: 3
Action & Adventure, Animation

What it's about: When Adam, Prince of the planet Eternia, raises his magic sword he transforms into He-Man (the most powerful man in the universe). With his allies and friends, he battles the evil Skeletor and his minions to protect the secrets of Castle Greyskull.

Where to Watch: 30 episodes (23%) are available to watch free online (YouTube). 67 episodes (51%) are available to stream on a popular subscription service (Hulu, Starz & ConTV). 126 episodes (96%) are available to stream on a popular TV everywhere service (Starz). 64 episodes (49%) are available to rent or buy from $1.99 on 2 services (Google Play & YouTube).

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11. Roswell, New Mexico

IMDB LogoIMDB Star
6.0/10
Rotten Tomatoes Logo53%
Reelgood Logo
63/100
Year: 2019-2019Rated: TV-14Seasons: 1
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 (38%) are available to watch free online (The CW). 13 episodes (100%) are available to stream on a popular subscription service (Netflix). 13 episodes (100%) are available to rent or buy from $1.99 on 1 service (Vudu).

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12. Eureka Seven

IMDB LogoIMDB Star
8.0/10
Rotten Tomatoes LogoN/A
Reelgood Logo
58/100
Year: 2005-2019Rated: TV-MASeasons: 3
Animation, Anime

What it's about: Eureka Seven, known in Japan as Psalms of Planets Eureka seveN, is a Japanese mecha anime TV series by Bones. Eureka Seven tells the story of Renton Thurston and the outlaw group Gekkostate, his relationship with the enigmatic mecha pilot Eureka, and the mystery of the Coralians.Bandai produced three video games based on Eureka Seven; two of them are based on events prior to the show, while the third is based on the first half of the show. Both the original concept of the anime and the video game Eureka Seven vol. 1: New Wave have been adapted into manga series as well, although with many significant changes primarily at the end. The TV series has also been adapted into a series of four novels and a movie.

Where to Watch: 50 episodes (67%) are available to watch free online (Crunchyroll). 75 episodes (100%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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13. Outlaw Star

IMDB LogoIMDB Star
7.9/10
Rotten Tomatoes LogoN/A
Reelgood Logo
57/100
Year: 1998-2019Rated: TV-PGSeasons: 1
Animation, Anime

What it's about: Outlaw Star follows the outlaw Gene Starwind and his eleven year-old business associate, Jim Hawking. Together they run a small jack-of-all-trades business on the backwater planet Sentinel III. After the two take a job as bodyguards for a mysterious outlaw, they find themselves the owners of the XGP15A-II, a highly advanced prototype spacecraft, and the caretakers of a bio-android named Melfina, The series follows the exploits of the slowly growing ragtag crew.

Where to Watch: 26 episodes (100%) are available to watch free online (Adult Swim & Crunchyroll). 26 episodes (100%) are available to stream on a popular subscription service (Hulu). 10 episodes (38%) are available to stream on a TV everywhere service (Adult Swim). 26 episodes (100%) are available to rent or buy from $0.99 on 3 services (iTunes, Google Play & YouTube).

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14. Jeff & Some Aliens

IMDB LogoIMDB Star
8.1/10
Rotten Tomatoes Logo100%
Reelgood Logo
56/100
Year: 2017-2019Rated: 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 6 services (iTunes, Google Play & 4 others).

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15. Wander Over Yonder

IMDB LogoIMDB Star
7.3/10
Rotten Tomatoes LogoN/A
Reelgood Logo
54/100
Year: 2013-2019Rated: 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: 3 episodes (4%) are available to watch free online (DisneyXD). 1 episodes (1%) are available to stream on a TV everywhere service (DisneyXD). 55 episodes (68%) are available to rent or buy from $1.99 on 4 services (iTunes, Google Play & 2 others).

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16. Tenchi Muyo!

IMDB LogoIMDB Star
7.7/10
Rotten Tomatoes LogoN/A
Reelgood Logo
52/100
Year: 1992-2019Rated: TV-PGSeasons: 4
Action & Adventure, Anime

What it's about: Tenchi is an average guy who just accidentally freed the space pirate Ryoko after 700 years of captivity! Attractive alien girls from all across the galaxy are about to descend on Tenchi and make his life more outrageous than ever imaginable!

Where to Watch: 7 episodes (29%) are available to watch free online (Crunchyroll). 13 episodes (54%) are available to rent or buy from $1.99 on 2 services (iTunes & Prime Video).

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17. Please Teacher!

IMDB LogoIMDB Star
7.2/10
Rotten Tomatoes LogoN/A
Reelgood Logo
47/100
Year: 2002-2019Rated: TV-PGSeasons: 1
Animation, Anime

What it's about: Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly.

Where to Watch: 11 episodes (92%) are available to watch free online (Crunchyroll). 12 episodes (100%) are available to stream on a popular subscription service (Starz). 12 episodes (100%) are available to stream on a popular TV everywhere service (Starz).

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18. My Favorite Martian

IMDB LogoIMDB Star
7.4/10
Rotten Tomatoes LogoN/A
Reelgood Logo
47/100
Year: 1963-2019Rated: TV-GSeasons: 4
Comedy, Animation

What it's about: Newspaper reporter Tim O'Hara finds a crashed alien spaceship that contains one live alien. Not wanting to be discovered by the authorities, the Martian assumes the identity of Tim's Uncle Martin and begins to repair his spaceship so that he can return to Mars.

Where to Watch: 107 episodes (98%) are available to watch free online (IMDb TV). 67 episodes (61%) are available to stream on a popular subscription service (Hulu). 40 episodes (37%) are available to rent or buy from $1.99 on 1 service (Prime Video).

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19. My Parents Are Aliens

IMDB LogoIMDB Star
6.9/10
Rotten Tomatoes LogoN/A
Reelgood Logo
46/100
Year: 1999-2019Seasons: 9
Children, Comedy

What it's about: My Parents Are Aliens is a British children's television sitcom that was produced for eight series by Yorkshire Television and aired on ITV from 8 November 1999 to 18 December 2006.

Where to Watch: 34 episodes (32%) are available to watch free online (Tubi TV).

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20. Ben 10: Omniverse

IMDB LogoIMDB Star
5.9/10
Rotten Tomatoes LogoN/A
Reelgood Logo
44/100
Year: 2012-2019Rated: 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 (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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21. Occult Academy

IMDB LogoIMDB Star
6.8/10
Rotten Tomatoes LogoN/A
Reelgood Logo
40/100
Year: 2010-2019Seasons: 1
Animation, Anime

What it's about: Occult Academy is a Japanese anime television series produced by A-1 Pictures and Aniplex and directed by Tomohiko Itō. The 13-episode anime premiered in Japan on the TV Tokyo television network on July 6, 2010. Occult Academy is the third project of Anime no Chikara. It was shown by Crunchyroll an hour after the Japanese broadcast. A manga adaptation of the anime is currently serialized in Media Factory's Monthly Comic Alive. A series of DVD/Blu-ray releases are made over six volumes. Volumes one through five each contain two episodes from the series and comes with extras, such as bonus songs sung by various voice actors for the characters. The final volume covers the last three episodes There are also four spinoff episodes, the first of which is included with the second volume. The series has been picked up in North America by NIS America, who released the series on Blu-ray on May 8, 2012.

Where to Watch: 13 episodes (100%) are available to watch free online (Crunchyroll).

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22. WildC.A.T.s

IMDB LogoIMDB Star
6.9/10
Rotten Tomatoes LogoN/A
Reelgood Logo
38/100
Year: 1994-2019Seasons: 1
Animation, Action & Adventure

What it's about: WildC.A.T.s is a half-hour animated television series based on the comics series of the same name. WildC.A.T.s is about the universal war between two prehistoric alien races. One of the races is the heroic Kherubim while the other is the evil Daemonites.

Where to Watch: 13 episodes (100%) are available to watch free online (Tubi TV). 13 episodes (100%) are available to rent or buy from $1.99 on 2 services (iTunes & Prime Video).