Science fiction is a genre that thrives on imagination, offering everything from laugh-out-loud comedies to mind-bending thrillers. While heavyweights like Star Trek and The Twilight Zone dominate the conversation, plenty of hidden gems have slipped under the radar. These underrated shows may not have gotten the love they deserved initially, but they're well worth adding to your watchlist—and rewatching again and again.
Whether you're in the mood for a quirky alien comedy or a poignant family drama, this ranked list has something for every sci-fi fan. Let's dive into the underrated sci-fi shows that deserve a second (or third) look.
10. 'Night Sky' (2022)
Starring Sissy Spacek and J.K. Simmons as Irene and Franklin York, Night Sky is a quiet, intimate sci-fi mystery. The couple hides a secret bunker on their property that leads to an alien planet. When a mysterious visitor arrives, everything they thought they knew is upended. Though it was canceled after one season, the eight episodes feel complete and satisfying, making it a perfect miniseries to binge.
9. 'The Neighbors' (2012–2014)
ABC's The Neighbors is a hilarious underrated comedy about a human family who moves into a gated community—only to discover all their neighbors are aliens. Jami Gertz and Lenny Venito lead a charming cast, with Simon Templeman and Toks Olagundoye stealing scenes as the extraterrestrial couple next door. The show cleverly explores universal themes like marriage and parenting, proving that some things transcend species.
8. 'Resident Alien' (2021–2025)
Alan Tudyk shines as Harry Vanderspeigle, an alien stranded on Earth who takes on the identity of a small-town doctor. Resident Alien blends comedy, drama, and sci-fi with Tudyk's unique performance at its heart. Despite budget cuts and a network change, the show ran for four seasons, offering touching moments about community and belonging. It's a must-watch for fans of undercover alien stories.
7. 'Hyperdrive' (2006–2007)
Imagine The Office set in space, and you get Hyperdrive. This British comedy follows the crew of the HMS Camden Lock as they handle trade and diplomacy across the galaxy. With Nick Frost, Miranda Hart, and Kevin Eldon, the show is a hilarious take on a commercialized space force. Its meta humor and deadpan delivery make it a perfect break from more serious sci-fi.
6. 'Lost in Space' (2018–2021)
Netflix's reboot of the classic 1960s series updates the premise for a modern audience. The Robinson family crash-lands on an alien planet and must work together to survive. With strong performances and a focus on family dynamics, Lost in Space avoids campiness and delivers a gripping sci-fi drama. Fans of survival stories and interpersonal intrigue will find plenty to love.
5. 'Warehouse 13' (2009–2014)
This Syfy series follows a team of agents who collect and secure supernatural artifacts stored in a mysterious warehouse. Warehouse 13 blends adventure, humor, and sci-fi, with a cast that includes Eddie McClintock and Joanne Kelly. Its episodic format and charming characters make it endlessly rewatchable.
4. 'Fringe' (2008–2013)
From J.J. Abrams, Fringe is a cerebral sci-fi thriller that explores parallel universes, fringe science, and a massive conspiracy. With standout performances from Anna Torv and John Noble, the show builds a rich mythology that rewards repeat viewings. It's a must for fans of The X-Files and complex storytelling.
3. '3rd Rock from the Sun' (1996–2001)
This classic sitcom follows a group of aliens who pose as a human family to study Earth. John Lithgow leads a hilarious cast, including Kristen Johnston and Joseph Gordon-Levitt. 3rd Rock from the Sun is a brilliant satire of human behavior, and its humor holds up remarkably well.
2. 'The Expanse' (2015–2022)
Often hailed as one of the best sci-fi shows of the 21st century, The Expanse is a gritty, politically charged space opera. Set in a colonized solar system, it follows a diverse cast as they uncover a conspiracy that threatens humanity. Despite critical acclaim, it remains underrated in mainstream circles. Its intricate plot and realistic science make it a standout.
1. 'Dark Matter' (2015–2017)
This Syfy series follows the crew of a spaceship who wake up with no memories of their past. As they piece together their identities, they uncover a web of betrayal and danger. Dark Matter is a fast-paced, character-driven show that was canceled too soon. Its cliffhanger ending leaves fans wanting more, but the journey is well worth it.
For more underrated gems, check out our list of the best thriller TV series of the last 15 years or explore the best crime comedy series ever.
