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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 Two-Timers

anchored on:science fictiontime travelour worldadventurous

but

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 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.
    • 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 Dancer from Atlantis
                  The Dancer from Atlantis

                  Poul Anderson · standalone novel · 1971

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                  The Dancer from Atlantis is a science fiction novel by American writer Poul Anderson, first published in 1971 by Doubleday.

                • Cover of The Goblin Reservation
                  The Goblin Reservation

                  Clifford D. Simak · standalone novel · 1968

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                  The Goblin Reservation is a 1968 science fiction novel by American writer Clifford D. Simak, featuring an educated Neanderthal, a biomechanical sabertooth tiger, aliens that move about on wheels, a man who time-travels using an unreliable device implanted in his brain, meeting a ghost, trolls, banshees, goblins, a dragon and even Shakespeare himself. The Goblin Reservation was a Hugo Award nominee in 1969 and was originally serialized in Galaxy Science Fiction magazine.

                • Cover of D. O. D. O. (Department of Diachronic Operations)
                  D. O. D. O. (Department of Diachronic Operations)

                  series · 2 books · 2017

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                  Neal Stephenson and Nicole Galland's D.O.D.O. novels center on the Department of Diachronic Operations, a covert U.S. government agency that discovers magic vanished from the world in the nineteenth century and sets out to use time travel to bring it back. The Rise and Fall of D.O.D.O. (2017) is followed by Master of the Revels, continuing the pair's earlier collaboration on The Mongoliad.

                • Cover of The Accidental Time Machine
                  The Accidental Time Machine

                  Joe Haldeman · standalone novel · 2007

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                  "Grad-school dropout Matt Fuller is toiling as a lowly research assistant at MIT when, while measuring subtle quantum forces that relate to time changes in gravity and electromagnetic force, his calibrator turns into a time machine. With a dead-end job and a girlfriend who has left him for another man, Matt has nothing to lose taking a time machine trip himself - or so he thinks."

                • Cover of The Corridors of Time
                  The Corridors of Time

                  Poul Anderson · standalone novel · 1965

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                  The Corridors of Time is a science fiction novel by the American writer Poul Anderson that was first published in 1965 as a serial in Amazing Stories, and as a book by Doubleday.

                • Cover of Dr. Futurity
                  Dr. Futurity

                  Philip K. Dick · standalone novel · 1960

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                  Dr. Futurity is a 1960 science fiction novel by American writer Philip K. Dick. It is an expansion of his earlier short story "Time Pawn", which first saw publication in the summer 1954 issue of Thrilling Wonder Stories. Dr. Futurity was first published as a novel by Ace Books as one half of Ace Double D-421, bound dos-à-dos with John Brunner's Slavers of Space.

                • Cover of Roadmarks
                  Roadmarks

                  Roger Zelazny · standalone novel · 1979

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

                • Cover of The Lincoln Hunters
                  The Lincoln Hunters

                  Wilson Tucker · standalone novel · 1958

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                  The Lincoln Hunters is a 1958 science fiction novel by American writer Wilson Tucker.

                • Cover of Time Storm
                  Time Storm

                  Gordon R. Dickson · standalone novel · 1977

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                  A time storm has devastated the Earth, and only a small fraction of humankind remains. From the rubble, three survivors form an unlikely alliance: a young man, a young woman, and a leopard. "A masterful science fiction story told by a masterful science fiction writer". -- Milwaukee Journal. A time storm strikes the Earth. The Earth remains, but different parts of the Earth are in different eras. Travel between the different zones is thought to be impossible. The main character, Marc Despard, resolves to fight the time storm. After some struggles, he assembles a small band of people, including one alien, to help him try to understand what has happened and to stop the time storm. He has 2 extraordinary relationships with a older teenaged girl who is speechless for the first part of the book (she was "struck dumb" by the time storm) and with, believe it or not, a leopard. Dickson's writing makes the extraordinary seem quite normal. Ultimately, after being harried by a Mad Max-like group of survivors, he uses a machine found in a different era of time to bring his small band of followers into the future so that he can find those who are trying to fight the time storm. He convinces those future beings that he is capable of fighting the time storm, and ultimately stops it, and gets the girl in the end.

                • Cover of The Apocalypse Troll
                  The Apocalypse Troll

                  David Weber · standalone novel · 1999

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                  The Apocalypse Troll is a novel by American writer David Weber, first published by Baen Books in January 1999. It is a story about time travel and alien invasion.

                • Cover of This Immortal
                  This Immortal

                  series · 2 books · 1966

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                  This Immortal is a single science fiction novel by Roger Zelazny, expanded from his 1965 serial ...And Call Me Conrad. In a depopulated future Earth largely toured by an alien race, its long-lived, secretive protagonist Conrad Nomikos is assigned to guide and protect a visiting alien across the ruins of Greece and Egypt, uncovering old grudges and assassination plots along the way. The novel shared the 1966 Hugo Award for Best Novel with Frank Herbert's Dune.

                • Cover of Time Patrol
                  Time Patrol

                  series · 24 books · 1955

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                  Poul Anderson's Time Patrol stories follow Manson Everard, recruited in 1957 into a secret organization that polices time travel, hunting down unauthorized travelers and anyone who would alter history. The series ranges from the waterfall that once refilled the dry Mediterranean basin to Gothic-era Ukraine and Phoenician Tyre, treating each era as a crime scene the Patrol must protect from tampering.

                • Cover of The Door Into Summer
                  The Door Into Summer

                  Robert A. Heinlein · standalone novel · 1957

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                  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 Project Pendulum
                  Project Pendulum

                  Robert Silverberg · standalone novel · 1987

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                  The discovery of time travel in 2016 allows an experiment wherein a pair of twins at opposite ends of a "time pendulum" are sent simultaneously forward and backward in time, then swung in the opposite directions, increasing the scale of the swing by a factor of ten each time, to witness both the past of Earth and humanity, and their future.

                • Cover of TimeRiders
                  TimeRiders

                  series · 9 books · 2010

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                  TimeRiders is a series of teen science fiction novels written by Alex Scarrow. The series consists of nine books and is published by Puffin Books.

                • Cover of Time Travelers Never Die
                  Time Travelers Never Die

                  series · 2 books · 1996

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                  Time Travelers Never Die started life as a Jack McDevitt novella in the mid-1990s (Hugo- and Nebula-nominated) before he expanded it into a full novel over a decade later; the novella and novel are two forms of the same story rather than a sequel. It follows a small circle of people who gain access to working time travel and use it to step into the past, in McDevitt's characteristic register of curious, history-minded science fiction.

                • Cover of A Year Without Autumn
                  A Year Without Autumn

                  Liz Kessler · standalone novel · 2011

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                  Twelve-year-old Jenni's much-anticipated vacation with her family and best friend Autumn goes awry when an old elevator transports her to a future in which everything has changed, and she must not only return to her time but find a way to prevent what she has seen from coming true.

                • Cover of The Star Beast
                  The Star Beast

                  Robert A. Heinlein · standalone novel · 1954

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                  A talking alien pet has grown to the size of a small dinosaur. She repeatedly gets her teenage owner in trouble whenever she leaves the backyard, but he continues to care for her, as did his father and grandfather before him. When an alien delegation lands on Earth and demands custody, he fights to protect her.

                • Cover of Thunder
                  Thunder

                  series · 3 books · 1995

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                • Cover of Once a Pirate
                  Once a Pirate

                  Susan Grant · standalone novel · 2000

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                  Rescued from the freezing Atlantic by a pirate who has lived to plunder merchant vessels, downed fighter pilot Carly Callahan is soon falling for this unlikely hero as well. Time Travel Romance

                • Cover of Lock & Key
                  Lock & Key

                  Gordon Bonnet · standalone novel · 2015

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                  When Darren Ault meets his friend Lee McCaskill for dinner, he doesn't expect the second course to be a gunshot to the head. Even more unexpected is the fact that the bullet doesn't kill him—instead, it causes the rest of humanity to vanish. Darren's attempted murder has caused a temporal paradox extending back over a thousand years, and now it's up to him to repair the damage. Embarking on a mind-bending journey through time, Darren encounters Vikings, a depressed Norwegian silversmith, an insane highwayman, a cult that believes in salvation through pain, a beautiful Hebridean lass, and Archibald Fischer—the foul-mouthed, Kurt Cobain-worshiping Head Librarian of the Library of Timelines, where all of the possibilities that could ever happen are catalogued, tracked, and managed.

                • Cover of The Book of Ptath
                  The Book of Ptath

                  A. E. van Vogt · standalone novel · 1947

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                  Ptath, a very powerful god, is throwing by his deadly rival, the goddess Ineznia, on Earth, around 200,000,000 AD, in the form of a mortal, where he has to face numerous dangers to survive.

                • Cover of Mists of Dawn
                  Mists of Dawn

                  Chad Oliver · standalone novel · 1952

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                  Mists of Dawn is a juvenile science fiction novel by science fiction writer and anthropologist Chad Oliver first published in 1952 by John C. Winston, Co. as a part of the Winston Science Fiction series of juvenile novels. The story follows the adventures of adolescent Mark Nye when he is accidentally transported to the Stone Age by his uncle's time machine. It includes a factual foreword on the science of anthropology and how Oliver uses this science in the telling of his story.

                • Cover of Three Go Back
                  Three Go Back

                  J. Leslie Mitchell · standalone novel · 1932

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                  Three Go Back is a novel by J. Leslie Mitchell published in 1932.