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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 A Two-Timer

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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.
  • 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 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 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.
    • 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.
    • 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 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 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 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.
      • 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.
          • 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.

            • K
              Kairos

              series · 11 books · 1962

              completed

              similar by+1 more

              The Time Quintet is a science fantasy series of five young adult novels written by American author Madeleine L'Engle and made up of A Wrinkle in Time (1962), A Wind in the Door (1973), A Swiftly Tilting Planet (1978), Many Waters (1986), and An Acceptable Time (1989).

            • Cover of The Door Into Summer
              The Door Into Summer

              Robert A. Heinlein · standalone novel · 1957

              similar bytime travel

              From the first page of the Signet 6th printing: "An electronics engineer invents a wizard robot... only to find himself shanghaied by his ruthless partner and his gold-digging fiancee. The crafty pair forces him to submit to the "long sleep" - suspended animation for thirty years. But when he wakes up in the year 2000 A.D. the inventor makes a startling discovery. He learns that it is possible now to twist time forwards or backwards. And so he returns to the past bent on a mission... of revenge."

            • Cover of The Sirens of Titan
              The Sirens of Titan

              Kurt Vonnegut & Jr. · standalone novel · 1959

              similar by+1 more

              The Sirens of Titan is a comic science fiction novel by Kurt Vonnegut Jr., first published in 1959. His second novel, it involves issues of free will, omniscience, and the overall purpose of human history, with much of the story revolving around a Martian invasion of Earth.

            • Cover of Starman Jones
              Starman Jones

              Robert A. Heinlein · standalone novel · 1953

              similar by+1 more

              Starman Jones, a 1953 science fiction novel by Robert A. Heinlein, features a farm boy who wants to go to the stars. Charles Scribner's Sons published the book as part of the Heinlein juveniles series.

            • Cover of Farnham's Freehold
              Farnham's Freehold

              Robert A. Heinlein · standalone novel · 1964

              similar bytime travel

              Farnham's Freehold is a science fiction novel by American writer Robert A. Heinlein. A serialized version, edited by Frederik Pohl, appeared in Worlds of If magazine. The complete version was published in novel form by G. P. Putnam later in 1964.

            • T
              Thistledown

              series · 5 books · 1978

              completed

              similar by+1 more

            • Cover of Slaughterhouse-Five or the Children's Crusade: A Duty-Dance with Death
              Slaughterhouse-Five or the Children's Crusade: A Duty-Dance with Death

              Kurt Vonnegut & Jr. · standalone novel · 1969

              similar bytime travel

              Vonnegut opens in his own voice, describing the twenty years it took him to face writing about surviving the firebombing of Dresden as a POW. He then hands the story to Billy Pilgrim, an awkward, fatalistic American chaplain's assistant swept into the Battle of the Bulge and captured by German forces alongside a soldier who dies blaming him for it. Imprisoned in a disused slaughterhouse in Dresden, Billy survives the firebombing that follows, and, we're told upfront, has also come 'unstuck in time,' living his life out of order, including a stretch on the alien world of Tralfamadore. Vonnegut's best-known novel folds war memoir into science fiction and black comedy.

            • Cover of Oxford Time Travel
              Oxford Time Travel

              series · 6 books · 1982

              similar bytime travel

              Connie Willis's Oxford Time Travel novels are set at a near-future Oxford University where historians travel into the past as observers, constrained by a version of history that resists any change large enough to alter real events. Doomsday Book sends a medieval historian to what should be 1320 but turns out to be the Black Death year of 1348, intercut with a present-day epidemic at Oxford; To Say Nothing of the Dog returns to the same time-travel program for a lighter, Victorian-set story with different characters. The two novels share their setting and rules rather than a directly continuing plot.

            • Cover of Time Traders
              Time Traders

              series · 7 books · 1958

              similar bytime travel

              The Time Traders opens Andre Norton's Cold War-flavored science fiction series, following an American agent recruited to travel into the past and counter a Soviet operation built around ancient technology unearthed from a vanished civilization. Norton, later joined by collaborators Sherwood Smith and P. M. Griffin, expanded the sequence to seven novels published between 1958 and 2002, and revised the opening book herself in 2000. Like several of Norton's other series, it treats leftover technology from a long-gone ancient culture as its central plot engine.

            • Cover of Change War
              Change War

              series · 16 books · 1958

              completed

              similar bytime travel

              The Big Time is Fritz Leiber's Hugo Award-winning novel set in his Change War future history, where two rival powers called the Spiders and the Snakes recruit soldiers out of history to fight by altering past events, with the novel itself confined to a neutral recovery station suspended outside normal time. Leiber followed it with a string of shorter Change War stories, later gathered into collections such as Changewar, exploring other soldiers and other flashpoints in the same endless, mutable conflict.

            • Cover of The Anubis Gates
              The Anubis Gates

              series · 3 books · 1983

              similar bytime travel

              The Anubis Gates is a single time-travel fantasy novel by Tim Powers, following a present-day academic who takes part in a time-travel experiment and ends up stranded in early nineteenth-century London. It won the Philip K. Dick Award in 1983 and the Science Fiction Chronicle Award the following year.

            • Cover of Bring the Jubilee
              Bring the Jubilee

              Ward Moore · standalone novel · 1953

              similar bytime travel

              From the flaps of the Farrar, Straus and Young first edition: ""Although I am writing this in the year 1877, I was not born until 1921." So Hodge Backmaker begins his story of the harsh and curious world he lived in, a world in which the South won the Civil War and the all-powerful Confederacy dominated the poor and backward North; a North that had neither a transcontinental railroad, and where television was undreamed of. Like most Northerners, Hodge was poor - but he had ambition. A printer's handyman in 1938, he had since become an eminent historian. Hodge's special interest was the American past, when the States had been united and had seemed to be on the brink of prosperity and technical progress. And then he was offered an opportunity no historian could resist - he could go back in time. Hodge chsoe to return to a certain field near Gettysburg on a day in July, 1863... Bring the Jubilee is a novel of curious events, of adventures and reflection, of passions and comment. It at time Hodge's world, its horse-carriages and gas-lights, minibles and tinugraphs and the Great Emperors' War of 1914 faintly resembles our own, it is perhaps, because that world might well become a reality: on the battlefield of Gettysburg there is a small hill called Little Round Top. One July morning in 1863 the Confederate Army made the tactical error of not occupying this hill. It was a mistake that cost them victory in a battle which - in the view of many historians - was the turning point of the Civil War."

            • Cover of The Halloween Tree
              The Halloween Tree

              Ray Bradbury · standalone novel · 1972

              similar by+1 more

              Eight boys gather on Halloween night to trick-or-treat with their ninth friend, Pipkin, only Pipkin never shows, having vanished on some errand that may cost him his life. A strange, black-robed guide named Moundshroud appears to lead the boys after him, and the chase turns into a journey through the history of the holiday itself: ancient Egypt, druidic Britain, Rome, medieval Paris, and the Mexican Day of the Dead, each stop peeling back another layer of how humanity has faced death and the dark. Ray Bradbury's Halloween novel doubles as a compressed history of the holiday's origins.

            • Cover of The Time Traveler's Wife
              The Time Traveler's Wife

              Audrey Niffenegger · standalone novel · 2003

              similar bytime travel

              The Time Traveler's Wife is the debut novel by American author Audrey Niffenegger, published in 2003. It is a love story about Henry, a man with a genetic disorder that causes him to time travel unpredictably, and about Clare, his wife, an artist who has to cope with his frequent absences. Niffenegger, who was frustrated with love when she began the novel, wrote the story as a metaphor for her failed relationships. The tale's central relationship came to Niffenegger suddenly and subsequently supplied the novel's title. The novel has been classified as both science fiction and romance.

            • Cover of Timescape
              Timescape

              Gregory Benford · standalone novel · 1980

              similar bytime travel

              WorldCat: In the year 1998, a group of scientists works desperately to communicate with the scientists of 1962, warning of an ecological disaster that will destroy the oceans in the future--if it is not averted in the past.

            • Cover of Dirk Gently
              Dirk Gently

              series · 3 books · 1987

              completed

              part of The Hitchhiker's Guide to the Galaxy Universe

              similar by+1 more

              Dirk Gently's Holistic Detective Agency (1987) introduces Douglas Adams's eccentric investigator, whose approach treats all events and objects as ultimately connected however implausibly, as a case involving time travel, a ghost, and a Cambridge murder tangles into one plot. Adams completed one further full novel, The Long Dark Tea-Time of the Soul (1988), before his death; The Salmon of Doubt (2002) later collected his unfinished notes toward a third book alongside essays and other writing, rather than completing the story.

            • Cover of Time and Again
              Time and Again

              series · 2 books · 1970

              completed

              similar bytime travel

              Time and Again (1970) follows Si Morley, a commercial artist recruited into a secret government project that sends him back to Manhattan in 1882, where he falls for a woman named Julia while weighing whether he can, or should, alter the past; Jack Finney illustrates the story with period photographs and engravings. The sequel, From Time to Time (1995), continues Si's story with a further trip into the past.

            • Cover of Kindred
              Kindred

              Octavia E. Butler · standalone novel · 1979

              similar bytime travel

              Kindred (1979) is a novel by American writer Octavia E. Butler that incorporates time travel and is modeled on slave narratives. Widely popular, it has frequently been chosen as a text by community-wide reading programs and book organizations, and for high school and college courses.

            • Cover of When the Sleeper Wakes
              When the Sleeper Wakes

              H. G. Wells · standalone novel · 1899

              similar bytime travel

              Graham, an insomniac Englishman in 1890s London, takes a course of sleep-inducing drugs and falls into a coma that lasts two centuries. He wakes in the year 2100 to find his investments have compounded, through a ruling body called the White Council, into effective ownership of most of the world's wealth and power, making him, on paper, humanity's master, and in practice, its prisoner, held under guard while the Council governs in his name. A rebel faction led by a man named Ostrog frees him, hoping to use his symbolic authority to spark an uprising against the Council. An early H. G. Wells dystopia about inherited power and manufactured consent.

            • Cover of Roadmarks
              Roadmarks

              Roger Zelazny · standalone novel · 1979

              similar bytime travel

              Roadmarks is a science fantasy novel by American author Roger Zelazny, written during the late 1970s and published in 1979.

            • Cover of Outlander (Diana Gabaldon)
              Outlander (Diana Gabaldon)

              series · 26 books · 1991

              similar by+1 more

              Outlander is a series of historical fantasy novels by American author Diana Gabaldon. Gabaldon began the first volume of the series, Outlander, in the late 1980s; it was published in 1991. She has published nine out of a planned ten volumes. The ninth novel in the series, Go Tell the Bees That I Am Gone, was released on November 23, 2021.

            • Cover of Replay
              Replay

              Ken Grimwood · standalone novel · 1987

              similar bytime travel

              Replay is a fantasy novel by American writer Ken Grimwood, first published by Arbor House in 1987. It won the 1988 World Fantasy Award for Best Novel.

            • Cover of The Midnight World
              The Midnight World

              series · 2 books · 2020

              similar by+1 more

            • Cover of Up the Line
              Up the Line

              Robert Silverberg · standalone novel · 1969

              similar bytime travel

              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.