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Built on ISFDB, Wikipedia, Wikidata and Open Library. Curated reading orders carry their reasoning on the page; the rest follow publication order. Data sources & licenses

© Loreful · data: ISFDB · CC BY

More like Radix

anchored on:science fictionother star systemsfar futurecoming of ageidentityspace+1 more

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Mood

The mood the book leaves you in.

  • The reading experience is propelled by journeys, exploration, and physical risk; excitement and forward momentum dominate over dread or introspection.
  • Joy and loss are deliberately mixed; the resolution grants characters something real while taking something else away, leaving warmth and sorrow together.
  • The book demands work from the reader — dense prose, difficult structure, unfamiliar ideas, or morally uncomfortable material — as part of its intended effect.
  • Grim events, cruelty, or despair dominate the atmosphere, and the book does not soften them with comfort or comic relief.
  • The atmosphere is quietly unsettling — wrongness, unease, and the uncanny pervade the book without necessarily escalating into overt horror.
  • The book is built to move the reader; character feeling is foregrounded and major scenes aim at a strong emotional response.
  • Humor is a primary aim and the prose plays for laughs — comic situations, wit, or dialogue produce sustained comedy, not occasional levity.
  • The book insists that things can improve; effort and decency are shown to matter, and the arc bends toward better outcomes even through hardship.
  • The book teaches as it goes — real facts, history, science, or craft are conveyed in enough depth that learning is part of the reading experience.
  • The book is designed to uplift and motivate, presenting perseverance or achievement in a way that invites the reader to aspire or act.
  • The overall register is cheerful and easygoing; stakes are kept gentle and the book avoids dwelling on pain or dread.
  • Withheld information drives the experience; the book sustains enigmas and secrets the reader wants resolved, whatever its genre.
  • The book is contemplative and inward-looking, giving more weight to thought, memory, and meaning than to external events.
  • The book works as comfort reading — low tension, a soothing pace, and an atmosphere the reader can unwind in.
  • Grief, loss, or melancholy set the dominant register, and the book lets sorrow stand rather than resolving it into comfort.
  • Sustained suspense is the point; the book keeps the reader braced for what happens next through danger, pressure, or impending revelation.
  • Playful invention and charm define the register — fanciful conceits, light absurdity, and a narration that delights in its own oddity.

About

What the story runs on.

  • Stories in which extraterrestrial beings are central — as characters, cultures, or the object of the plot.
  • Stories about venturing into space to explore — survey missions, astronauts, and the frontier of the unknown beyond Earth.
  • Stories about minds with paranormal abilities — telepathy, telekinesis, precognition, empathy — and how societies handle those who have them.
  • Stories structured as a quest — a journey undertaken to find, deliver, or destroy something of great import.
  • Stories in which staying alive against nature, catastrophe, or scarcity is the central problem.
  • Stories in which a friendship — its making, testing, or loss — is the emotional center.
  • Stories of growing up — a young protagonist crossing from childhood into adult knowledge and responsibility.
  • Stories about who a character truly is — self-discovery, doubled lives, and the search for a self.
  • Stories in which a buried family truth — hidden parentage, crimes, or shames — surfaces and reorders the present.
  • Stories driven by maneuvering for power — factions, conspiracies, and statecraft conducted in shadow.
  • Stories in which war itself is the subject — combat, occupation, and what warfare does to soldiers and civilians.
  • Stories organized around investigating a killing — the case, the clues, and the pursuit of the killer, in any genre's clothing.

Shelf

Where it sits in the library.

    • Fiction built on magic or other supernatural elements that have no scientific explanation.
    • Secondary-world fantasy at large scale, where the fate of nations or the world turns on the protagonists' struggle.
    • Fantasy set in a recognizably modern city or contemporary world where the supernatural intrudes on everyday life.
    • Fantasy that blends in horror's atmosphere and imagery, keeping a fantastical frame around grim or frightening material.
    • Action-driven fantasy following warriors or rogues with personal stakes against sorcerous threats, rather than world-spanning conflicts.
    • Fantasy set in a real historical period or a close analogue of one, with magic woven into the era.
    • Fantasy in which protagonists cross from the ordinary world into another world through a portal or similar passage.
    • Fiction that retells or reworks a traditional fairy tale in a new form or setting.
    • Fantasy drawing directly on myths, legends, and folklore, retelling them or building on their figures and logic.
    • Fantasy of ghosts, vampires, shapeshifters, psychics, and similar phenomena, usually set in an otherwise ordinary world.
    • Fiction mixing science-fictional trappings with overtly magical or impossible elements in one setting.
    • Low-stakes fantasy emphasizing comfort, community, and everyday pleasures over conflict and peril.
    • Speculative fiction of pervasive moral ambiguity, violence, and cynicism that rejects heroic conventions — fantasy and SF alike.
      • Fiction that extrapolates from science and technology — future societies, space travel, or speculative inventions — within at least nominally natural laws.
      • Science fiction of interstellar scope — starships, galactic polities, and adventure across star systems.
      • Science fiction committed to scientific rigor, where technical plausibility constrains the story.
      • Science fiction centered on armed forces and warfare, told largely from a military point of view.
      • Science fiction of networked, corporate-dominated near futures, pairing high technology with social decay.
      • Science fiction styled on nineteenth-century steam-powered technology, often in a Victorian or pseudo-Victorian setting.
      • Fiction depicting an oppressive or catastrophic society, presented as a warning.
      • Fiction set after civilization's collapse, following survivors in the ruins of the old world.
      • Fiction in which characters move between past and future, and the mechanics or consequences of that travel drive the plot.
      • Fiction exploring a world where a historical event went differently and history diverged from ours.
      • Science fiction about humanity's first encounter and communication with an alien intelligence.
      • Science fiction in which extraterrestrial forces attack or occupy Earth and humanity resists.
      • Fiction whose primary aim is to frighten or unsettle the reader through dread, menace, or the monstrous.
      • Horror of vast, indifferent, incomprehensible entities before which humanity is insignificant, in the Lovecraft tradition.
      • Horror of decaying houses, buried family secrets, and oppressive atmosphere in the Gothic literary tradition.
      • Horror centered on hauntings and the returning dead.
      • Horror located in the mind — paranoia, obsession, and unreliable perception rather than external monsters.
      • Horror built around the reanimated dead and survival amid their outbreaks.
      • Horror defined by explicit, transgressive gore that refuses to cut away from violence.
      • Speculative fiction of the strange and uncanny that resists both natural explanation and standard genre categories.
      • Fiction organized around solving a crime or puzzle, typically following an investigator toward the identification of a culprit.
      • A puzzle-first mystery that lays out clues so the culprit's identity can be deduced before the reveal.
      • Crime fiction of moral ambiguity, fatalism, and hard-edged style, set among the corrupt and the doomed.
      • A mystery following the realistic routines of police work — forensics, interviews, and case-building.
      • A gentle mystery with an amateur sleuth, a small community, and violence kept off the page.
      • A mystery set in a past era, where the investigation works within that period's methods and society.
      • Fast-paced fiction driven by imminent danger, pursuit, or high-stakes conspiracy, built to sustain tension.
      • A thriller of espionage — agents, tradecraft, and intelligence services in conflict.
      • A thriller centered on lawyers and the courtroom, where litigation carries the suspense.
      • A thriller driven by detailed contemporary or near-future technology, often military or scientific.
      • A thriller whose tension comes from mental states and manipulation between characters rather than external action.
      • Fiction whose central plot is a romantic relationship and its development toward an emotionally satisfying resolution.
      • Romance in which one or both partners are supernatural beings, blending fantasy elements into the love story.
      • A fantasy-romance hybrid in which the romantic arc and the fantasy plot carry equal weight.
      • Romance set in a past era, with courtship shaped by the period's society and manners.
      • Romance set in the present day, without supernatural or historical elements.
      • Fiction set in a real past period, where the historical setting materially shapes characters and events.
        • General and literary fiction emphasizing prose style, character interiority, or formal ambition over genre plot conventions.
        • Fiction in a realistic world where magical events occur and are treated as ordinary, in the tradition of Latin American literature.
        • Fiction that ridicules people, institutions, or society in order to criticize them.
        • Fiction of dreamlike, irrational imagery and logic that breaks from realistic representation.
        • Fiction that plays with narrative convention through metafiction, fragmentation, and self-reference.
        • Fiction propelled by journeys, exploration, and physical peril, where action and survival carry the plot.
        • Adventure fiction of ships and seafaring — naval engagements, voyages, and life at sea.
        • Fiction of the American frontier West — gunmen, ranchers, and lawmen, typically in the late nineteenth century.
        • Fiction centered on soldiers, campaigns, and the experience of warfare, historical or imagined.
          • Fiction written primarily to amuse, using comedic situations, wit, or parody as its organizing principle.
            • Multi-generational fiction following a family or dynasty across decades, with inheritance and kinship as the through-line.
              • Fiction whose world runs on explicit game mechanics — levels, stats, and skills that characters can see and exploit.
                • Fiction about costumed or superpowered heroes and their conflicts with comparable villains.

                Practical

                How long a commitment, whether it stands alone, and whether it has finished.

                Tap a chip to ask for it · tap again to rule it out · once more to clear. Numbers show what would be left.

                • Cover of The Gods Themselves
                  The Gods Themselves

                  Isaac Asimov · standalone novel · 1972

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                  The Gods Themselves is a 1972 science fiction novel written by Isaac Asimov, and his first original novel in fifteen years. It won the Nebula Award for Best Novel in 1972, and the Hugo Award for Best Novel in 1973.

                • Cover of Dune
                  Dune

                  series · 20 books · 1963

                  part of Dune Universe

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                  Frank Herbert's Dune Chronicles opens with 1965's Dune, set on the desert planet Arrakis where House Atreides takes control of the only source of the vital spice melange and young Paul Atreides is pulled into a struggle over its politics and religion. Herbert carried the story forward across five further novels — Dune Messiah, Children of Dune, God Emperor of Dune, Heretics of Dune, and Chapterhouse: Dune — following Paul's line over the following millennia, before Brian Herbert and Kevin J. Anderson later extended the saga. Many other editions of these six novels are omnibus and box-set repackagings rather than separate stories.

                • Cover of Embassytown
                  Embassytown

                  China Miéville · standalone novel · 2011

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                  In the far future, humans have colonized a distant planet, home to the enigmatic Ariekei, sentient beings famed for a language unique in the universe, one that only a few altered human ambassadors can speak. Avice Benner Cho, a human colonist, has returned to Embassytown after years of deep-space adventure. She cannot speak the Ariekei tongue, but she is an indelible part of it, having long ago been made a figure of speech, a living simile in their language. When distant political machinations deliver a new ambassador to Arieka, the fragile equilibrium between humans and aliens is violently upset. Catastrophe looms, and Avice is torn between competing loyalties—to a husband she no longer loves, to a system she no longer trusts, and to her place in a language she cannot speak yet speaks through her.

                • Cover of Stranger in a Strange Land
                  Stranger in a Strange Land

                  Robert A. Heinlein · standalone novel · 1961

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                  Stranger in a Strange Land is a 1961 science fiction novel by the American author Robert A. Heinlein. It tells the story of Valentine Michael Smith, a human who comes to Earth in early adulthood after being born on the planet Mars and raised by Martians, and explores his interaction with and eventual transformation of Terran culture.

                • Cover of Starship Troopers
                  Starship Troopers

                  Robert A. Heinlein · standalone novel · 1959

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                  Starship Troopers is a military science fiction novel by American writer Robert A. Heinlein. Written in a few weeks in reaction to the US suspending nuclear tests, the story was first published as a two-part serial in The Magazine of Fantasy & Science Fiction as Starship Soldier, and published as a book by G. P. Putnam's Sons on November 5, 1959.

                • Cover of The Einstein Intersection
                  The Einstein Intersection

                  Samuel R. Delany · standalone novel · 1967

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                  The Einstein Intersection is a 1967 science fiction novel by Samuel R. Delany. The title is a reference to Einstein's Theory of Relativity connecting to Kurt Gödel's Constructible universe, which is an analogy to science meeting philosophy. The original publisher, Ace Books, changed Delany's originally intended title from A Fabulous, Formless Darkness for commercial reasons.

                • Cover of Kefahuchi Tract Trilogy
                  Kefahuchi Tract Trilogy

                  series · 3 books · 2002

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                  M. John Harrison's Kefahuchi Tract trilogy circles a strange, physics-breaking anomaly in deep space that draws scientists, smugglers, and drifters into its pull across different eras. Light moves between a near-future timeline and a far-future one drawn to the Tract itself; its sequel Nova Swing stays within one future period, where a fragment of the anomaly's altered space bleeds into the run-down port city of Saudade, giving the book a noir, Roadside-Picnic-like atmosphere; Empty Space concludes the sequence. The three novels share a setting and mood more than a continuous plot or cast.

                • Cover of Radix Tetrad
                  Radix Tetrad

                  series · 4 books · 1981

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                  The Radix Tetrad is a group of four science fiction books by A. A. Attanasio. The first novel, the Nebula Award-nominated Radix, was published in 1981, and the last novel, The Last Legends of Earth, was published in 1989.

                • Cover of Triton
                  Triton

                  Samuel R. Delany · standalone novel · 1976

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                  Trouble on Triton: An Ambiguous Heterotopia (1976) is a science fiction novel by American writer Samuel R. Delany. It was nominated for the 1976 Nebula Award for Best Novel, and was shortlisted for a retrospective James Tiptree, Jr. Award in 1995. It was originally published under the shorter title Triton.

                • Cover of Citizen of the Galaxy
                  Citizen of the Galaxy

                  Robert A. Heinlein · standalone novel · 1957

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                  On a planet far distant from Earth, a lame beggar buys a young boy slave who has forgotten his origins. The beggar is more than he seems, and gives the boy an extensive education while employing him as an observer of activity in their city. Years later, the beggar is captured by the government, and the youth must escape the planet.

                • Cover of A Time of Changes
                  A Time of Changes

                  Robert Silverberg · standalone novel · 1971

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                  A Time of Changes is a 1971 science fiction novel by American writer Robert Silverberg. It won the Nebula Award for that year, and was also nominated for the 1972 Hugo and Locus Awards.

                • Cover of Babel-17
                  Babel-17

                  Samuel R. Delany · standalone novel · 1966

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                  Babel-17 is a 1966 science fiction novel by American writer Samuel R. Delany. Published by Ace Books in May 1966, it follows Rydra Wong, a poet and linguist recruited during an interstellar war to decipher a language connected to enemy sabotage. Her investigation reveals a language that shapes thought and can make its speakers unwitting saboteurs. Through Rydra's effort to understand and revise it, the novel explores communication, perception, identity, and translation.

                • T
                  Thistledown

                  series · 5 books · 1978

                  completed

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                • Cover of Vacuum Flowers
                  Vacuum Flowers

                  Michael Swanwick · standalone novel · 1987

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                  Vacuum Flowers is a science fiction novel by American writer Michael Swanwick, published in 1987. It is an early example of the cyberpunk genre, and features one of the earliest uses of the concept of wetware.

                • Cover of Jean le Flambeur
                  Jean le Flambeur

                  series · 3 books · 2010

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                  Jean le Flambeur is a master thief broken out of a virtual prison to pull off one more impossible heist, in a solar system reshaped by uploaded minds, post-human factions, and economies built on memory and privacy themselves. Hannu Rajaniemi's trilogy - The Quantum Thief, The Fractal Prince, The Causal Angel - is dense, idea-heavy hard SF that trusts readers to piece its future together from context rather than exposition.

                • Cover of Glory Season
                  Glory Season

                  David Brin · standalone novel · 1993

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                  Glory Season is a 1993 science fiction novel by David Brin. It was nominated for both the Hugo and Locus Awards in 1994. An announcement in the back of one edition of Earth is for a novel titled Stratos, to be released in the spring of 1992. It seems likely that this was delayed, and renamed Glory Season.

                • Cover of Singularity Sky
                  Singularity Sky

                  series · 2 books · 2003

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                  Singularity Sky and its sequel Iron Sunrise are collectively known as the Eschaton novels, after the godlike posthuman intelligence that seeded human colonies across space on the condition they never attempt time travel or threaten causality - rules tested when a low-tech colony world is destabilized by a group calling itself the Festival. Charles Stross uses the setup for a mix of space opera, economics, and diplomatic intrigue.

                • Cover of Implied Spaces
                  Implied Spaces

                  Walter Jon Williams · standalone novel · 2008

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                  Implied Spaces is a 2008 space opera novel by American author Walter Jon Williams. It explores themes of transhumanism, artificial intelligence and ontology.

                • Cover of Son of Man
                  Son of Man

                  Robert Silverberg · standalone novel · 1971

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                  Son of Man is a science fiction novel by American writer Robert Silverberg, published in 1971. The book is about Clay, a 20th-century man, who travels billions of years into the future and meets humanity in its future forms. Some of the issues discussed in the book are sexuality, telepathic communication between people, physical prowess or frailty, division of humans by caste or ability, and the preservation of ancient wisdom, among other things.

                • Cover of Helliconia
                  Helliconia

                  series · 4 books · 1982

                  completed

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                  The Helliconia trilogy is a series of science fiction books by British writer Brian W. Aldiss, set on the Earth-like planet Helliconia. It is an epic chronicling the rise and fall of a civilisation over thousands of years as the planet progresses through its incredibly long seasons, which last for centuries.

                • Cover of Shaper/Mechanist
                  Shaper/Mechanist

                  series · 6 books · 1982

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                  Shaper/Mechanist is Bruce Sterling's future-history of a fractured solar system, split between the genetically engineered Shapers and the cybernetically augmented Mechanists as humanity spreads beyond Earth. Schismatrix, the only full-length novel in the setting, follows a diplomat-schemer across decades of shifting factions and post-human politics. Schismatrix Plus collects that novel together with five earlier short stories set in the same future.

                • Cover of Ilium
                  Ilium

                  series · 2 books · 2003

                  completed

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                  Ilium/Olympos is a series of two science fiction novels by Dan Simmons. The events are set in motion by beings who appear to be ancient Greek gods. Like Simmons' earlier series, the Hyperion Cantos, it is a form of "literary science fiction"; it relies heavily on intertextuality, in this case with Homer and Shakespeare as well as references to Marcel Proust's À la recherche du temps perdu and Vladimir Nabokov's novel Ada or Ardor: A Family Chronicle.

                • Cover of Stars in My Pocket Like Grains of Sand
                  Stars in My Pocket Like Grains of Sand

                  Samuel R. Delany · standalone novel · 1984

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                  Stars in My Pocket Like Grains of Sand (1984) is a science fiction novel by Samuel R. Delany. It is part of what would have been a "diptych", in Delany's description, of which the second half, The Splendor and Misery of Bodies, of Cities, remains unfinished.

                • Cover of Diaspora
                  Diaspora

                  Greg Egan · standalone novel · 1997

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                  Diaspora is a hard science fiction novel by the Australian writer Greg Egan which first appeared in print in 1997. It originated as the short story "Wang's Carpets" which originally appeared in the Greg Bear-edited anthology New Legends. The story appears as a chapter of the novel.