Most Popular Sci-Fi TV Series/TV Mini-Series
2. The Flash (2014– )
TV-PG | 43 min | Action, Adventure, Drama
After being struck by lightning, Barry Allen wakes up from his coma to discover he's been given the power of super speed, becoming the Flash, fighting crime in Central City.
5. The 100 (2014– )
TV-14 | 43 min | Drama, Mystery, Sci-Fi
Set 97 years after a nuclear war has destroyed civilization, when a spaceship housing humanity's lone survivors sends 100 juvenile delinquents back to Earth in hopes of possibly re-populating the planet.
7. Arrow (2012– )
TV-14 | 42 min | Action, Adventure, Crime
Spoiled billionaire playboy Oliver Queen is missing and presumed dead when his yacht is lost at sea. He returns five years later a changed man, determined to clean up the city as a hooded vigilante armed with a bow.
12. The Expanse (2015– )
TV-14 | 60 min | Drama, Mystery, Sci-Fi
A police detective in the asteroid belt, the first officer of an interplanetary ice freighter and an earth-bound United Nations executive slowly discover a vast conspiracy that threatens the Earth's rebellious colony on the asteroid belt.
13. Westworld (2016– )
TV-MA | 60 min | Drama, Mystery, Sci-Fi
Set at the intersection of the near future and the reimagined past, explore a world in which every human appetite, no matter how noble or depraved, can be indulged without consequence.
14. Outlander (2014– )
TV-MA | 64 min | Drama, Romance, Sci-Fi
Follows the story of Claire Randall, a married combat nurse from 1945 who is mysteriously swept back in time to 1743, where she is immediately thrown into an unknown world where her life is... See full summary »
15. Star Wars Rebels (2014– )
TV-Y7 | 30 min | Animation, Action, Adventure
A brave and clever ragtag starship crew stands up against the evil Empire as it tightens its grip on the galaxy and hunts down the last of the Jedi Knights.
16. Legends of Tomorrow (2016– )
TV-14 | 42 min | Action, Adventure, Drama
Focuses on time-traveling rogue Rip Hunter, who has to recruit a rag-tag team of heroes and villains to help prevent an apocalypse that could impact not only Earth, but all of time.
17. Mystery Science Theater 3000 (1988–1999)
TV-14 | 92 min | Comedy, Sci-Fi
In the not-too-distant future, a man and his robots are trapped aboard the Satellite of Love, where mad scientists force them to sit through the worst movies ever made.
26. The X-Files (1993– )
TV-14 | 45 min | Drama, Mystery, Sci-Fi
Two FBI agents, Fox Mulder the believer and Dana Scully the skeptic, investigate the strange and unexplained, while hidden forces work to impede their efforts.
27. The OA (2016– )
60 min | Drama, Fantasy, Mystery
Having gone missing seven years ago, the previously blind Prairie returns home, now in her 20s with her sight restored. While many believe she is a miracle, others worry that she could be dangerous.
30. Person of Interest (2011–2016)
TV-14 | 43 min | Action, Crime, Drama
An ex-assassin and a wealthy programmer save lives via a surveillance AI that sends them the identities of civilians involved in impending crimes. However, the details of the crimes--including the civilians' roles--are left a mystery.
32. Star Trek: The Next Generation (1987–1994)
TV-PG | 44 min | Action, Adventure, Mystery
Set decades after Captain Kirk's five-year mission, a new generation of Starfleet officers set off in a new Enterprise on their own mission to go where no one has gone before.
34. Star Trek: Voyager (1995–2001)
TV-PG | 44 min | Action, Adventure, Sci-Fi
Pulled to the far side of the galaxy, where the Federation is 75 years away at maximum warp speed, a Starfleet ship must cooperate with Maquis rebels to find a way home.
35. Class (2016– )
45 min | Drama, Sci-Fi
Coal Hill School has been a feature of Doctor Who (1963) since the first episode, but now we get to see the day-to-day adventures of the students coping with intrusions from space and time.
39. Smallville (2001–2011)
TV-PG | 60 min | Adventure, Drama, Romance
A young Clark Kent struggles to find his place in the world as he learns to harness his alien powers for good and deals with the typical troubles of teenage life in Smallville, Kansas.
41. Mystery Science Theater 3000: The Return (2017– )
90 min | Comedy, Sci-Fi
Set in the future, a space scientist who works for Gizmonic is lured to the dark side of the moon. He is sat in front of cheesy movies with his robot buddies and forced to torturously watch... See full summary »
45. Mighty Morphin Power Rangers (1993–1999)
TV-Y7 | 30 min | Action, Adventure, Family
A team of teenagers with attitude are recruited to save Angel Grove from the evil witch, Rita Repulsa, and later, Lord Zedd, Emperor of all he sees, and their horde of monsters.
47. The Last Man on Earth (2015– )
TV-14 | 22 min | Action, Comedy, Drama
Almost two years after a virus wiped out most of the human race, Phil Miller only wishes for some company, but soon gets more than he bargained for when that company shows up in the form of other survivors.
48. Star Trek: Deep Space Nine (1993–1999)
TV-PG | 45 min | Action, Adventure, Drama
In the vicinity of the liberated planet of Bajor, the Federation space station Deep Space Nine guards the opening of a stable wormhole to the far side of the galaxy.
49. Firefly (2002–2003)
TV-14 | 44 min | Adventure, Drama, Sci-Fi
Five hundred years in the future, a renegade crew aboard a small spacecraft tries to survive as they travel the unknown parts of the galaxy and evade warring factions as well as authority agents out to get them.
50. Travelers (II) (2016– )
45 min | Sci-Fi
Hundreds of years from now, surviving humans discover how to send consciousness back through time, into people of the 21st century, while attempting to save humanity from a terrible future.