Which Speculative Fiction Genres Are Hottest Right Now?
Speculative fiction includes fantasy, science fiction, horror, and many related subgenres. It remains one of the most popular and growing categories in publishing. However, some genres and subgenres are much more popular than others. For new authors, knowing what kinds of books readers are buying in 2025 can help focus your writing and marketing efforts.
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This article looks at bestselling books and trends in speculative fiction today to help new writers understand which genres are reaching readers and why.
Fantasy Romance Leads the Market
Fantasy romance is currently the most popular speculative fiction subgenre. Books like Fourth Wing and Sarah J. Maas’s A Court of Thorns and Roses series continue to dominate bestseller lists on Amazon and other platforms.
These books combine magical worlds with strong romantic plots. They appeal mostly to women aged 18 to 35. Social media platforms like BookTok and Instagram play a huge role in their success. Readers enjoy the emotional arcs, character development, and romantic tension.
If you write fantasy romance, focus on deep character relationships and emotional stakes. Romance is not just a subplot but a key part of what draws readers in.
Progression Fantasy and LitRPG Attract Loyal Fans
Progression fantasy and LitRPG (literary role-playing game) stories are very popular in indie publishing and digital platforms like Kindle Unlimited and Royal Road.
Popular series like Cradle by Will Wight or Defiance of the Fall show readers love to follow characters who grow stronger through clear rules, level-ups, and challenges. These readers often prefer frequent updates and long story arcs.
The typical audience is younger and mostly male, including gamers and tech-savvy readers. Serialization and consistent releases are important to keep fans engaged.
Dark Fantasy and Grimdark Attract Serious Readers
Dark fantasy and grimdark books offer more mature, often brutal stories with complex characters and political intrigue. Titles like The Poppy War by R.F. Kuang and The First Law Trilogy trilogy by Joe Abercrombie remain popular among adult readers.
These books may not top mainstream bestseller charts, but they have dedicated fan bases and often perform well in hardcover and paperback formats. They appeal to readers who want morally complex stories and realistic portrayals of power and conflict.
Dystopian Fiction is Changing
Dystopian fiction was very popular in the 2010s, especially among young adult readers, but it has softened in mainstream publishing recently. Instead of big, action-driven dystopias, readers now prefer character-focused, thoughtful stories.
Recent hits like Station Eleven and Silo show that dystopian stories with strong themes and hopeful messages still find an audience, especially when paired with TV or movie adaptations.
Science Fiction Finds Success with Emotion and Hope
Hard science fiction has a smaller but loyal audience. Books that combine emotional storytelling with scientific ideas are selling better than purely technical works.
The Long Way to a Small, Angry Planet and Isles of the Emberdark show that hopeful or character-driven sci-fi appeals widely. Readers want stories that explore humanity, relationships, and possibility as much as futuristic technology.
Hybrid Genres Offer New Opportunities
Many bestselling speculative fiction books blend elements from different genres. For example, Gideon the Ninth mixes horror and fantasy, while Ice Planet Barbarians combines romance and science fiction.
These hybrid books reach multiple groups of readers and perform well on platforms like Amazon and BookTok. Combining genres can help new authors stand out and find a larger audience.
Genre Popularity and Platforms
Fantasy Romance
Popularity: Very High
Best Platforms: Amazon, BookTok
Progression Fantasy / LitRPG
Popularity: High (Niche)
Best Platforms: Kindle Unlimited, Royal Road
Dark Fantasy / Grimdark
Popularity: Moderate
Best Platforms: Traditional publishing, Hardcover editions
Dystopian Fiction
Popularity: Stabilizing
Best Platforms: TV tie-ins, Literary fiction circles
Soft / Hopeful Science Fiction
Popularity: Moderate
Best Platforms: Book clubs, Audiobooks
Hard Science Fiction
Popularity: Niche
Best Platforms: Print editions, Audiobooks
Final Advice for New Writers
Know the strengths and expectations of your chosen genre.
Publish on platforms where your genre’s audience gathers.
Don’t be afraid to blend genres to reach more readers.
Remember that strong characters and emotional engagement are often the keys to success.
Keep your release schedule consistent, especially if writing progression fantasy or serial fiction.
Understanding these trends can help you write books that readers want and build an audience faster.
What genres do you think are really taking off right now? Are there any subgenres you feel are underrated or on the rise? How do you see reader tastes changing in the last year or two?
I’m curious to hear what you all think about the current speculative fiction landscape and where it’s headed next.
Esp. Mark Valentine, also Colin Insole, R. Ostermeier, DP Watt and the last tales of the late Mark Samuels would be great examples. A couple of Robert Edric's novels, e.g. The Wrack Line, and The World Made of Glass.
I love the nuanced, rich language, the subtle spookiness and weirdness. Their style reminds me of Derek Jarman's (though his works weren't speculative fiction). Wouldn't expect any of this to become mainstream and that's for the best.
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Something imo criminally underrated is a Slavic-French SF author who felt so constrained by the genre that he invented his own: Post-exoticism.
The Strugatsky-translator writes under heteronymes - aliases with fake biographies - as Antoine Volodine, also as Lutz Bassmann, Manuela Draeger and Elli Kronauer. His author-identities are often also protagonists his books; and he uses meta-fiction to break the barriers between author, narrator and characters, who often interact with and comment on each other as if one a stage.
Volodine tells "postmortal" tales, as all of his protagonists are already un/dead. Sometimes they're aware of it, sometimes not, but always struggling. The setting is an utterly nihilistic, dystopian Bardo (Buddhist world of death) with ashen landscapes and abandoned cities, and also a 2nd Soviet Union including GULAGs as well as anarchistic rebel-shamans. Written since the 1980s, the work comprises 49 novels, sadly only a part of which have been translated from the French.
I find his work utterly weird and utterly addictive, it's unlike anything else in speculative literature. I'm amazed by his strange ideas, the innovative, beautiful language, and the masterful worldbuilding, esp. since every book offers an individual, stand-alone story revealing different aspects, like shards of a broken vessel one has to re-assemble. Despite the bleakness, there's a subtle, very absurd humour and witty side-characters that offer a good balance.
It's very hard to switch to other authors after one had read a couple of his books! My favourites are:
Antoine Volodine: Radiant Terminus, Dondog, Bardo Or Not Bardo, Minor Angels (no angels there, but shamanistic witches).
Lutz Bassmann: We Monks & Soldiers, Black Village
Manuela Draeger: Kree
Volodine talks about his concepts & writing e.g. here and here.
"As in the Tibetan Book of the Dead, the deceased we portray continue their existence after death and live forever in worlds made up of distorted memories, fantasies and a new post-mortem reality. They live in floating worlds that it is easy to call the Bardo, and which are, for us, parallel worlds, worlds of fiction where, unfortunately, the ugly human wandering that they knew during their lifetime is repeated, exhaustingly, grimly and hopelessly. Our survivors are already dead, which gives the fiction many perspectives and relieves the characters of the anguish of their disappearance. I would add that placing characters in the Bardo makes it possible to develop events and images that make the fantastic, in a way, natural: no need to do complex literary acrobatics to justify bizarre metamorphoses, or the presence of bird-characters, or incursions of witches and magic, or the disproportionate lengthening of duration, temporal inconsistencies, no need to tediously explain what preceded the extinction of humanity, and, at the same time, no need to modify a type of writing that remains, basically, perfectly realistic ..."