Science fiction has long served as a mirror held up to humanity’s present and past, using imagined futures to explore cautionary tales and sharp social commentary. Yet for all its dense theoretical technologies and complex political factions, the genre has never been confined to heavy, demanding reading. As the 21st century unfolds, a wave of wittier, more adventurous titles has proven that stories about artificial intelligence, alien encounters, and galaxy-spanning wars can be just as entertaining as they are thought-provoking. Here are eight of the most entertaining science fiction books of the century, each grappling with modern issues facing humanity while delivering plenty of laughs along the way.
While literary science fiction can be extremely rewarding, it competes with a rich tradition of lighter fare built on humor and adventure. The following selections span comedic space operas, cozy found-family sagas, and satirical adventures, offering readers a diverse taste of what the genre’s most joyful entries have to offer in the decades so far.
A Comedic Tradition Carried Forward
John Scalzi remains a master of comedic science fiction, whether penning zany novels like Starter Villain or crafting the silly short stories later adapted into episodes of the Netflix anthology series Love, Death & Robots. His Hugo Award-winning novel Redshirts, published in 2012, leans directly into the franchise’s most running joke: the fate of unnamed crew members. The novel follows a group of new ensigns aboard a starship where away missions carry an appallingly high casualty rate, and the story grows far weirder as the fresh crew investigates the true nature of their ship’s constant confrontations with aggressive aliens while searching for a way to survive. Fans of the animated Star Trek: Lower Decks will find much to appreciate here.
Science fiction writers imagine the future in order to explore humanity’s present and past, providing a mix of cautionary tales and social commentary.
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Cozy Voyages and Found Families
Becky Chambers’ originally self-published 2014 debut, The Long Way to a Small, Angry Planet, is very much a journey over destination story. It follows Rosemary Harper, a woman from Mars who tries to escape her past by joining the crew of a ship tasked with tunneling wormholes through space. As Rosemary learns from the quirky aliens she shares the ship with, the novel unfolds as a sweet story of found family, making it a perfect read for admirers of Firefly or Farscape.
Similarly warm in spirit is Artificial Condition, the second entry in Martha Wells’ Murderbot Diaries series. The franchise follows a rogue cyborg security guard who would rather be watching soap operas than protecting what it perceives as dumb, helpless humans. Wells’ signature internal monologue has always been entertaining, but this installment shines as Murderbot finds the perfect foil in an advanced ship AI dubbed Asshole Research Transport. Readers can enjoy the book before the second season of the Apple TV adaptation, which is currently in the works.
Absurdist Space Operas
Catherynne M. Valente’s Space Opera, published in 2018, takes the space opera genre quite literally. In this absurdist novel, humanity must compete in the Metagalactic Grand Prix, a Eurovision-like song contest. Filled with over-the-top humor, the book reads as basically a glam rock tribute to The Hitchhiker’s Guide to the Galaxy, following the washed-up band Decibel Jones and the Absolute Zeroes as they use music to prove humanity is sentient—with species annihilation awaiting anyone who places last.
Valerie Valdes’ Chilling Effect, from 2019, delivers one of the genre’s strangest ensembles aboard the ship La Sirena Negra. Captain Eva Innocente, a foul-mouthed leader, lies to her crew about the stakes of a series of dangerous jobs as she tries to save her kidnapped sister. The novel pokes fun at video games and pop culture as Eva navigates psychic cats and the unwanted affection of an alien emperor.
Snark, Mystery, and Survival
While Tamsyn Muir’s Gideon the Ninth, published in 2019, opens as a very bloody mystery, Gideon’s snarky humor keeps the story from ever feeling too heavy. Set within the Locked Tomb science fantasy series, the novel tasks Gideon with protecting the necromancer Harrow as heirs of the empire’s great houses complete challenges to prove their worthiness of immortality. Clad in skull makeup and aviator shades, Gideon perpetually exasperates Harrow, though the two must work together to survive and uncover who is killing the other competitors.
Andy Weir’s Project Hail Mary, released in 2021, applies his signature dry wit and talent for explaining hard science to a buddy comedy adventure rather than a survival tale. Science teacher and biologist Ryland Grace wakes up with amnesia aboard a spaceship orbiting a distant star, discovering he is the only survivor of a mission to save Earth’s sun. He soon finds an unlikely ally in an alien trying to save its own planet. The book received a perfect adaptation in 2026, but readers can still chase down some wild moments that didn’t make it into the film.
Looking Ahead
Matt Dinniman popularized the LitRPG subgenre with his self-published Dungeon Crawler Carl series, which received commercial printing in 2024. Blending science fiction and fantasy, the story follows Carl, a Coast Guard veteran who winds up competing in an alien reality TV show alongside his ex-girlfriend’s prized show cat. The dynamic between these unlikely party members proves hilarious as they face bizarre challenges to level up, impress a twisted AI, and build a following across the galaxy. A television adaptation is being developed by Seth MacFarlane for Peacock, signaling the series’ growing reach beyond the page.
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