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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 Calculated Risk

anchored on:science fictiontime travelour worldmid 20th centuryidentitymysterious+2 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 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 of lovers kept apart by law, family, faith, or station, where the obstacle to love is the plot.
  • 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 about mourning — living through the death of a loved one and what loss does to the survivors.
  • 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 Who?
                  Who?

                  Algis Budrys · standalone novel · 1958

                  similar byidentitymid 20th centuryscience fictionmysterioustense

                  Who? is a 1958 science fiction novel by American writer Algis Budrys, set during the Cold War. It was originally a short story, inspired, as its author claimed, by a Kelly Freas painting he had seen in the offices of the magazine Fantastic Universe, and published in that magazine in April 1955.

                • Cover of Flashforward
                  Flashforward

                  Robert J. Sawyer · standalone novel · 1999

                  similar byidentityscience fictionmysterioustenseour worldtime travel

                  Flashforward is a science fiction novel by Canadian author Robert J. Sawyer first published in 1999. The novel is set in 2009. At CERN, the Large Hadron Collider accelerator is performing a run to search for the Higgs boson. The experiment has a unique side effect; the entire human race loses their consciousness for about two minutes. During that time, nearly everyone sees themselves roughly twenty-one years and six months in the future. Each individual experiences the future through the senses of their future self. This "flashforward" results in countless deaths and accidents involving vehicles, aircraft, and any other device needing human control at the time of the experiment. The novel was adapted into the 2009 television series FlashForward.

                • Cover of Quicksand
                  Quicksand

                  John Brunner · standalone novel · 1967

                  similar byidentitymid 20th centuryscience fictiontenseour worldbritish isles+1 more

                  A British psychiatrist in a deadening job and a deadening marriage gets a mysterious patient; a petite young woman who speaks an unrecognizable language and is unfamiliar with the common objects, sights, and behaviors of normal life, yet who is able to quickly and easily cripple or kill a large man with her bare hands when she feels threatened. He feels more than professional concern for the woman, who he believes is not actually mentally ill but is in fact a more unusual case.

                • Cover of Century Rain
                  Century Rain

                  Alastair Reynolds · standalone novel · 2004

                  similar byidentitymid 20th centuryscience fictionmysterious+2 more

                  Century Rain is a 2004 noir science fiction alternative history mystery novel by Welsh author Alastair Reynolds (ISBN 0-575-07436-1).

                • Cover of Beyond the Barrier
                  Beyond the Barrier

                  Damon Knight · standalone novel · 1964

                  similar byidentityscience fictionmysterioustensetime travel+1 more

                  From the front flap of the Doubleday first edition: "Gordon Naismith was a physics professor at a large California university. The year was 1980, and by means of the university's duplicator he could personally teach in nine different classrooms simultaneously. Naismith was an average man in all but two respects: the reflexes were extraordinarily quick, and four years before in a plane crash he had lost all memory of his earlier life. Neither difference seemed important until one day a very unusual student in one of his classes asked a disturbing, extracurricular question: "Professor, what is a zug?" The question triggered a series of violent incidents, and soon Naismith himself, as well as the police, were beginning to wonder if the duplicator had reproduced him a tenth time. The answer lay ten thousand years in the future."

                • Cover of Sirius: A Fantasy of Love and Discord
                  Sirius: A Fantasy of Love and Discord

                  Olaf Stapledon · standalone novel · 1944

                  similar byidentitymid 20th centuryscience fictionour world+1 more

                  Sirius is a 1944 science fiction novel by the British philosopher and author Olaf Stapledon, whose title character is a dog named Sirius with humanlike intelligence. A sense of existential questioning suffuses the book, as the author delves into aspects of Sirius's psyche. The novel deals with many human issues through Sirius and his experiences, his unusual nature, his ideas and his relationships with humans. The characters go to great lengths to prevent Sirius from becoming a circus-type wonderdog, and instead, they seek to develop Sirius's character much like a family would create and foster that of a human child.

                • Cover of Eye in the Sky
                  Eye in the Sky

                  Philip K. Dick · standalone novel · 1957

                  similar byidentitymid 20th centuryscience fictionour world

                  Eight visitors touring a particle-accelerator facility are caught in a catastrophic malfunction, a collapsing platform, a burst of radiation, that leaves them all unconscious. When protagonist Jack Hamilton, an engineer recently fired over Red Scare-era suspicions about his wife's politics, comes to, the world around him is subtly, then not so subtly, wrong: physics bends to fit one fellow victim's religious convictions, then to another's paranoid fears, as the group cycles through what turn out to be shared hallucinations built from each other's private belief systems. Philip K. Dick's early novel about how differently people actually see the same world.

                • Cover of Time Out of Joint
                  Time Out of Joint

                  Philip K. Dick · standalone novel · 1959

                  similar byidentityscience fictionmysteriousour world

                  Time Out of Joint is a science fiction novel by American writer Philip K. Dick, first published in novel form in the United States in 1959. An abridged version was also serialised in the British science fiction magazine New Worlds Science Fiction in several installments from December 1959 to February 1960.

                • Cover of The Body Snatchers
                  The Body Snatchers

                  Jack Finney · standalone novel · 1955

                  similar byidentitymid 20th centuryscience fictiontense

                  The Body Snatchers is a science fiction horror novel by American writer Jack Finney, originally serialized in Collier's magazine in November–December 1954 and published in book form the following year.

                • Cover of Thrice Upon a Time
                  Thrice Upon a Time

                  James P. Hogan · standalone novel · 1980

                  similar byidentityscience fictiontime travelmysteriousbritish isles

                  Amazon: When Murdoch was summoned to his grandfather's isolated Scottish castle, he had no idea of the old man's latest discovery -- nor where it would lead him. Sir Charles, a genius in far-out physics, had found a flaw in the law of conservation of energy; in any process, an incredibly tiny increment of energy escaped -- back through time! Using this "tau" radiation, he could send messages into the past. But Murdoch discovered records of messages he knew he had never sent. Were many futures possible? Could a message from Future X alter the past -- and thus wipe out Future X? But who would be foolish enough to send a message that could eliminate his own existence?

                • Cover of The Cosmic Puppets
                  The Cosmic Puppets

                  Philip K. Dick · standalone novel · 1957

                  similar byidentitymid 20th centuryscience fictionmysterious

                  The Cosmic Puppets is a science fiction novel by American author Philip K. Dick, published in 1957. It is a novelization of a short story initially published in the December 1956 issue of Satellite Science Fiction. The Cosmic Puppets was first published as a novel by Ace Books as one half of Ace Double D-249, bound dos-à-dos with Sargasso of Space by Andrew North .The story follows Ted Barton, a man who returns to his childhood hometown of Millgate, Virginia, only to discover that it has been erased from all official records and is now a surreal place where the laws of reality are distorted. Barton learns that the town is a battleground in a cosmic struggle between two ancient beings, a conflict that has twisted the fabric of his home and the memories of its inhabitants.

                • Cover of Legion / Stephen Leeds
                  Legion / Stephen Leeds

                  series · 5 books · 2012

                  similar byidentityscience fictionmysteriousour world+1 more

                  Legion, or the Stephen Leeds series, is a series of science fiction novellas created by American author Brandon Sanderson. Sanderson authored the first three stories : Legion, first published on August 31, 2012, Legion: Skin Deep in November 2014, and Legion: Lies of the Beholder in September 2018. Death and Faxes, co-authored by Max Epstein, David Pace, and Michael Harkins, was released in June 2022. The books have received favorable reviews.

                • Cover of Coils
                  Coils

                  Roger Zelazny & Fred Saberhagen · standalone novel · 1982

                  similar byidentityscience fictionmysterioustenseour world

                  A man discovers that his memories of childhood are false, and when he begins to investigate his psychiatrist is murdered and his girlfriend is kidnapped. As his actual past begins to return to his memory, he realizes that he has the ability to mentally connect to computer circuitry, an ability he used to use for illegal advantage for the corporation which employed him, along with a small group of others with paranormal powers. He concludes that the corporation is behind all this and sets out to find and rescue his girlfriend while the corporation pursues him.

                • Cover of Total Recall
                  Total Recall

                  Piers Anthony · standalone novel · 1989

                  similar byidentityscience fictionmysterioustenseour world

                  Douglas Quail is haunted by nightmares of Mars, covert missions and a life more glamorous than his earthbound 2089 AD reality. So he turns to "Recall", manufacturers of synthetic memories. They implant a memory into him but he soon finds that his nightmares are true memories.

                • Cover of Double, Double
                  Double, Double

                  John Brunner · standalone novel · 1969

                  similar byidentityscience fictionmysterioustenseour world

                  Double, Double is a science fiction novel by John Brunner, first published in the United States as an original paperback by Ballantine Books in 1969 and reprinted in 1979 as a Del Rey paperback. A hardcover edition was released in the British market in 1971 by Sidgwick & Jackson.

                • Cover of The Multi-Man
                  The Multi-Man

                  John Russell Fearn · standalone novel · 1954

                  similar byidentitymid 20th centuryscience fictionmysterioustensebritish isles

                  'Research biologist Jeffrey Dexter's experiments produce a creature capable of endless reproduction, yet lacking human reserve. Then he's murdered - swept aside by the ruthless Multi-Man. Dexter's wife's claim, that the new Jeffrey Dexter is only a cellular duplicate of her husband, finds her incarcerated in an institution for the mentally unbalanced. Dexter No 2 develops his plans: famous people are duplicated to nominate Dexter's Presidency in a new scientific era. Can Scotland Yard Detective Sergeant Hanbuy hold him back?' from Ulverscroft.Com.

                • Cover of The Oracle Year
                  The Oracle Year

                  Charles Soule · standalone novel · 2018

                  similar byidentityscience fictionmysterioustenseour world

                  Awakening from a dream with more than one hundred predictions about the future in his head, an unassuming Manhattan bassist becomes one of the world's most powerful men and hides his identity behind an online persona that is targeted by greedy corporations and dangerous enemies.

                • Cover of Up the Line
                  Up the Line

                  Robert Silverberg · standalone novel · 1969

                  similar byidentityscience fictiontime travelour world

                  Up the Line (1969) is a time travel novel by American science fiction author Robert Silverberg. The plot revolves mainly around the paradoxes brought about by time travel and is considered an example of the more sexually-permissive era of late 1960s American science-fiction, a reflection of the counterculture of its day. It was nominated for a Nebula Award for Best Novel in 1969 and a Hugo Award for Best Novel in 1970 but lost to Ursula K. Le Guin's The Left Hand of Darkness both times.

                • Cover of The Productions of Time
                  The Productions of Time

                  John Brunner · standalone novel · 1967

                  similar byidentityscience fictionmysteriousour worldtime travel

                  The Productions of Time is a science fiction novel by English writer John Brunner, first published in The Magazine of Fantasy and Science Fiction in 1966. It appeared in book form the following year, published by Signet Books.

                • Cover of Venus Plus X
                  Venus Plus X

                  Theodore Sturgeon · standalone novel · 1960

                  similar byidentitymid 20th centuryscience fiction+1 more

                  Charlie Johns wakes in a featureless silver room with no memory of how he got there and a watch that's inexplicably running backward. He's been brought, how and by whom is never explained to him, to Ledom, an isolated, technologically advanced society whose members are all both male and female and have done away with fixed sex roles entirely. Guides walk him through Ledom's customs and machinery while making clear he's there to judge them before he can go home. Interwoven with Charlie's tour are chapters following an ordinary mid-century American family, setting the utopia against the world it's implicitly critiquing. Theodore Sturgeon's provocative novel about gender and social design.

                • Cover of Departure
                  Departure

                  A. G. Riddle · standalone novel · 2014

                  similar bytime travelmysterioustenseour worldscience fiction+1 more

                  "The world's past and future rests in the hands of five unwitting strangers in this definitive edition of A. G. Riddle's time-traveling, mind-bending speculative thriller. En route to London from New York, Flight 305 suddenly loses power and crash-lands in the English countryside, plunging a group of strangers into a mysterious adventure that will have repercussions for all of humankind.Struggling to stay alive, the survivors soon realize that the world they've crashed in is very different from the one they left. But where are they? Why are they here? And how will they get back home? Five passengers seem to hold clues about what's really going on: writer Harper Lane, venture capitalist Nick Stone, German genetic researcher Sabrina Schroeder, computer scientist Yul Tan, and Grayson Shaw, the son of a billionaire philanthropist.As more facts about the crash emerge, it becomes clear that some in this group know more than they're letting on--answers that will lead Harper and Nick to uncover a far-reaching conspiracy involving their own lives. As they begin to piece together the truth, they discover they have the power to change the future and the past--to save our world. or end it. A wildly inventive and propulsive adventure full of hairpin twists, Departure is a thrilling tale that weaves together power, ambition, fate, memory, and love, from a bold and visionary talent"--

                • Cover of The Werewolf Principle
                  The Werewolf Principle

                  Clifford D. Simak · standalone novel · 1967

                  similar byidentityscience fictionmysteriousour world

                  From the back cover of the first DAW printing: "Andrew Blake, found in a space capsule on a distant planet, was brought back to an unfamiliar Earth, where antigravity devices had replaced the wheel and houses talk and even fly! Yet nothing was as strange as Blake's own feelings. Tormented by eerie sensations and a loss of memory, he didn't know who he really was nor exactly where he came from. His destiny only began to grow frighteningly clear when he met a weird, tassel-eared creature who darkly hinted at the truth about Blake's origins. Slowly Blake became aware of the long hushed-up "Werewolf Principle," a scientific theory buried in the past, which held the key to Blake's own fate - and the future of the human race..."

                • Cover of Pastworld
                  Pastworld

                  Ian Beck · standalone novel · 2009

                  similar byidentityscience fictionmysterioustensebritish isles

                  What if all of London were really an amusement park—a whole city returned to Victorian times to entertain visitors from the twenty-first century? That's the wildly original premise of Ian Beck's Pastworld, a high-stakes mystery set in a simulated past. Eve is a lifelong resident of Pastworld who doesn’t know she’s living in a theme park until a mysterious threat forces her to leave home. Caleb is a visiting tourist who finds the lawlessness of the past thrilling—until he suddenly becomes a fugitive from an antiquated justice system. And in the midst of it all, in the thick London fog a dark and deadly figure prowls, claiming victim after victim. He’s the Fantom, a creature both of the past and of the present, in whose dark purpose Caleb and Eve will find their destinies combined. Page-turning, complex, and haunting, Pastworld masterfully exposes the human experience of the past, of violence, of technology, and of entertainment.

                • Cover of The Light of Other Days
                  The Light of Other Days

                  Arthur C. Clarke & Stephen Baxter · standalone novel · 2000

                  similar byscience fictiontenseour worldtime travel+2 more

                  An industrialist devises a technique to use tiny wormholes as light pipes to enable viewing of any event anywhere; and subsequently it becomes possible to use them to view any event in the past as well. The effects on society are enormous.