16 Underrated Sci-Fi Comedies You Probably Missed
Sci-fi doesn't have to be bleak. These 16 underrated comedies prove the genre can actually be funny.
Finding good sci fi comedy movies is surprisingly difficult when the genre defaults so heavily to bleakness. Six posts into this category and the landscape has been almost entirely grief machines, dystopias, body horror, and projects that flopped and got buried. Sci-fi earns that reputation honestly. It also, somehow, keeps forgetting it's allowed to be funny.
Here are 16 sci-fi comedies that never got their due, ranging from deadpan to full absurdist chaos. If Colossal, Attack the Block, or Starship Troopers already scratched this itch on our other lists, this is everything they left on the table.
Sci-Fi Comedies With Real Alien Chaos
1. Galaxy Quest (1999)
Washed-up actors from a canceled sci-fi show get mistaken for real heroes by an alien race that's never encountered fiction. They're dragged into an actual intergalactic war with zero idea what they're doing. It's a loving parody of Star Trek fandom rather than a mean one, and Alan Rickman quietly steals the entire film playing a Shakespearean actor suffering through alien cosplay.
Watch it if: you want fandom satire that actually likes the thing it's making fun of.
2. Evolution (2001)
A meteor crashes in Arizona carrying alien microbes that evolve at absurd speed, and the SETI-adjacent scientists tasked with stopping them respond with exactly the level of competence you'd expect from a David Duchovny comedy. It leans into every alien-invasion cliché on purpose and somehow makes that the joke.
Watch it if: you want Ghostbusters energy applied to an actual extinction-level threat.
3. Mars Attacks! (1996)
Tim Burton's gleefully mean-spirited take on alien invasion follows Martians who arrive promising peace and immediately start vaporizing Congress. The all-star cast is mostly there to die in increasingly elaborate ways, and the film has zero interest in taking any of it seriously.
Watch it if: you want your alien invasion played entirely for slapstick body count.
4. Paul (2011)
Two British sci-fi nerds road-tripping through America's UFO-tourism belt pick up an actual escaped alien, voiced by Seth Rogen, who's mostly interested in weed and getting home. Simon Pegg and Nick Frost wrote it as a love letter to genre fandom itself, and it's stuffed with references that reward exactly the kind of person watching it.
Watch it if: you want alien-buddy-comedy energy that never stops being sincere about loving the genre.
5. Save Yourselves! (2020)
A couple unplugs from their phones for a weekend at a remote cabin to reconnect — and misses the entire alien invasion because they weren't checking their phones. It's a small, sharp indie that gets more mileage out of "what if you just didn't notice the apocalypse" than a premise that thin has any right to.
Watch it if: you want apocalypse comedy scaled down to two extremely online people failing to cope.
Dry, Deadpan & Deeply Weird Sci-Fi Comedies
6. The Hitchhiker's Guide to the Galaxy (2005)
Earth gets demolished to make way for an intergalactic highway bypass, and an ordinary man is rescued moments before by his best friend, who turns out to be an alien researcher. It's Douglas Adams' absurdist British humor played completely straight, opening with a two-minute musical number sung by dolphins that tells you exactly what kind of film you're in for.
Watch it if: dry British absurdism is your exact frequency, and you're fine if it isn't anyone else's.
7. Idiocracy (2006)
Mike Judge imagines a future so dumbed-down by anti-intellectualism that an average, unremarkable man from the present wakes up centuries later as the smartest person alive. It was barely released, mostly ignored, and has since aged into one of the most uncomfortably accurate satires in the genre.
Watch it if: you want satire that's gotten less funny over time for exactly the wrong reasons.
8. Iron Sky (2012)
Nazis who fled to the dark side of the moon in 1945 return to invade Earth in 2018, and the film commits to that premise with total, gleeful sincerity. It's a Finnish-German production made almost entirely through crowdfunding, and the sheer audacity of the pitch carries it further than the budget technically should.
Watch it if: you want the single most unhinged premise on this list, played completely straight.
9. Sorry to Bother You (2018)
A telemarketer discovers that using his "white voice" unlocks a horrifying corporate promotion track, and the film escalates from workplace satire into something considerably stranger by its final act. Boots Riley's directorial debut is hard to categorize, which is exactly why it never found the mainstream audience it deserved.
Watch it if: you want your sci-fi comedy to turn into something you didn't see coming.
10. Mickey 17 (2025)
Robert Pattinson plays an "expendable" employee who gets regenerated with most of his memories intact every time his deadly assignments kill him. Bong Joon-ho finds real dark comedy in how casually his employer treats each death. High-profile cast, acclaimed director, and it still managed to fly under the radar on release.
Watch it if: you want body-horror comedy from the director who made Parasite and Snowpiercer.
Small, Sweet & Surprisingly Sincere Sci-Fi Comedies
11. Robot and Frank (2012)
A retired cat burglar with worsening dementia is given a caretaker robot by his worried son, and immediately recruits it as an accomplice for one last heist. Frank Langella grounds the whole film in something quietly tender about aging and memory, buried inside a premise that sounds like a much broader comedy than this actually is.
Watch it if: you want your sci-fi comedy to sneak up on you emotionally.
12. Summer Time Machine Blues (2005)
A college club discovers a time machine has crash-landed in their clubhouse and spends the film trying to retrieve a lost TV remote from the day before — a stakes-free premise that turns out to be a clever structural trick in disguise. Japanese, low-key, and considerably smarter about its own time-loop logic than the setup suggests.
Watch it if: you want the lowest possible stakes wrapped around a genuinely well-built time travel puzzle.
13. The World's End (2013)
Five old friends attempt to finish a legendary pub crawl they failed as teenagers, only to discover their hometown has been quietly replaced by robotic doubles. Edgar Wright's finale to the Cornetto trilogy uses alien invasion as the backdrop for a much sadder story about aging, addiction, and refusing to let go of who you used to be.
Watch it if: you want your alien-invasion comedy to double as a real gut-punch about growing up.
14. Free Enterprise (1998)
Two obsessive Star Trek fans meet their idol, William Shatner, and discover he's nothing like they imagined — self-aware, chaotic, and pitching a musical version of Julius Caesar where he plays every part. It's a love letter to fandom's messier side, and Shatner's willingness to send himself up made it a cult favorite among the exact audience it's about.
Watch it if: you want celebrity-worship comedy where the celebrity is in on the joke completely.
15. Slither (2006)
James Gunn's directorial debut follows a small town infected by a parasitic alien organism that turns its host into something between a zombie and a body-horror nightmare. It's played with far more comic timing than the premise suggests. It's gross, gleeful, and clearly the work of someone who'd go on to make superhero movies with the exact same tonal balance.
Watch it if: you want to see where Gunn's specific blend of gore and humor actually started.
This Month's Wildcard Pick
16. Hoppers (2026)
Pixar's latest ventures into sci-fi comedy territory with a wildly imaginative premise: humans transferring their consciousness into robotic animals. Following a college student who "hops" into a beaver to save a local forest, it's a hilarious and surprisingly chaotic look at the animal kingdom from the inside.
Watch it if: you want an animated sci-fi comedy that combines Pixar's signature emotional depth with a completely unhinged animal uprising.
Already read our Underrated Sci-Fi Movies of the 2010s → list? Mickey 17's director also made Snowpiercer, covered in full in our Underrated Dystopian Movies → post.