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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 Triangle

anchored on:science fictioncontemporarytensethriller & suspensealiensexpeditions+3 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 Sphere
                  Sphere

                  Michael Crichton · standalone novel · 1987

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                  Keeping Top Secret, the US Navy is guarding a gigantic spaceship that has been lying on the Pacific ocean floor for centuries, overgrown with corals. A group of highly qualified scientists is assembled to investigate this mysterious discovery. When the team boards the ship via an underwater station, they come into confrontation with the evil.

                • Cover of Ethan Warner
                  Ethan Warner

                  series · 1 book · 2011

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                • Cover of Artifact
                  Artifact

                  Gregory Benford · standalone novel · 1985

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                  Archaeologists have discovered in Greece an object of alien origin buried 3500 years ago. A small black rock cube was unearthed in a Mycenaean tomb. However, archaeologists do not know that it was buried precisely because it would have had catastrophic effects on civilization if it remained on the surface.

                • Cover of Ascension
                  Ascension

                  Nicholas Binge · standalone novel · 2023

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                  Ascension is a 2023 novel by Nicholas Binge, published in the UK by Harper Voyager, and in the US by Riverhead Books. It is published or forthcoming in twelve languages, and a film adaptation is in development. The novel tells the story of Harold Tunmore, a physicist, who joins a team to climb a mountain that has appeared in the middle of the Pacific Ocean.

                • Cover of Triggers
                  Triggers

                  Robert J. Sawyer · standalone novel · 2012

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                  Triggers is a science fiction novel by Canadian writer Robert J. Sawyer. It was originally serialized in Analog.

                • Cover of The Abyss
                  The Abyss

                  Orson Scott Card · standalone novel · 1989

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                  The Abyss is a 1989 American science fiction film written and directed by James Cameron and starring Ed Harris, Mary Elizabeth Mastrantonio, and Michael Biehn. When an American submarine sinks in the Caribbean, a U.S. search and recovery team works with an oil platform crew, racing against Soviet vessels to recover the boat. Deep in the ocean, they encounter something unexpected.

                • Cover of Decipher
                  Decipher

                  Stel Pavlou · standalone novel · 2001

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                  Decipher is a speculative fiction novel by British author Stel Pavlou, published in 2001 in England by Simon & Schuster and 2002 in the United States by St. Martin's Press. The novel is about a fictional linguist, Richard Scott, and an assembled team of specialists who are in a race against time to crack a code found on ancient monuments around the world before an impending cataclysm predicted in mythology can strike. The story centers on the ancient city of Atlantis and features other mythical sites such as the Hall of Records.

                • Cover of Sekret Machines
                  Sekret Machines

                  series · 2 books · 2016

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                • Cover of Deception Point
                  Deception Point

                  Dan Brown · standalone novel · 2001

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                  Deception Point is a 2001 mystery-thriller novel by American author Dan Brown. It is Brown's third novel. It was published by Simon & Schuster.

                • Cover of The Visitors
                  The Visitors

                  Clifford D. Simak · standalone novel · 1980

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                  WorldCat: Intelligent, alien creatures arrive on Earth from outer space, threatening world stability and presaging the destruction of civilization.

                • Cover of Invasion
                  Invasion

                  Robin Cook · standalone novel · 1997

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                  Earth is bombarded from space by small disks which, in addition to having powerful physical armaments, when handled activate latent viral DNA which causes humans to mutate into alien beings; a small group recognize the danger and attempt to develop a biological counterweapon.

                • Cover of Saucer
                  Saucer

                  series · 3 books · 2002

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                  Saucer is Stephen Coonts's techno-thriller trilogy beginning with Saucer (2002), continued in Saucer: The Conquest and Saucer: Savage Planet. It follows the discovery of a functioning craft buried for millennia in the Sahara desert and the test pilots and adventurers who end up flying, and fighting over, it, escalating from a buried desert secret toward wider stakes involving hostile outside interests.

                • Cover of Departure
                  Departure

                  A. G. Riddle · standalone novel · 2014

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                  "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 Themis Files
                  The Themis Files

                  series · 3 books · 2015

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                  Sylvain Neuvel's Themis Files opens when a girl falls into a hole in South Dakota and lands on the palm of a giant metal hand buried underground; the trilogy picks up years later as she leads the team trying to determine what the hand is part of and why it's there. Sleeping Giants and its sequels are told almost entirely through interview transcripts conducted by an unnamed, evasive interrogator, giving the series a documentary, oral-history feel unusual for first-contact SF. The mystery escalates from an archaeological puzzle into a question of who else is looking for the same answer.

                • Cover of Undisclosed
                  Undisclosed

                  Steve Alten · standalone novel · 2017

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                  "A veteran of the Iraq war is appointed Under Secretary of Defense in order to penetrate a secret government purposely black-shelving zero-point-energy, a clean, abundant energy source reverse-engineered from downed UFOs. Are Extraterrestrials and UFOs real? Are there secret subterranean military bases hiding advanced technologies that date back to the incident at Roswell? Is there a False Flag in the works intended to wipe out billions? Steve Alten's UNDISCLOSED is a mind-opening thriller of -faction- which incorporates testimonials from military and intelligence personnel who were actual eyewitnesses and participants involved in the greatest secret in history."--Amazon.com.

                • Cover of The Swarm
                  The Swarm

                  Frank Schätzing · standalone novel · 2004

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                  The Swarm is a science fiction novel by German author Frank Schätzing. It was first published in 2004 and soon became a bestseller.

                • Cover of Robert Langdon
                  Robert Langdon

                  series · 6 books · 2000

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                  The Robert Langdon novel series is named after Robert Langdon, the protagonist of the novels by American author Dan Brown. Langdon is portrayed as a Harvard University professor of religious iconology and symbology, a fictional field related to the study of historic symbols, which is not methodologically connected to the actual discipline of semiotics. Brown's novels that feature the lead character also include historical themes and Christianity as motifs, and as a result have generated controversy. Brown states on his website that his novels are not anti-Christian, and that he is on a "constant spiritual journey" himself.

                • Cover of Footfall
                  Footfall

                  Larry Niven & Jerry Pournelle · standalone novel · 1985

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                  When aliens travel to Earth from Alpha Centauri, differences between alien and human psychology result in an unprovoked invasion, and the resulting resistance results in the aliens' use of a devastating weapon.

                • Cover of Sinister Barrier
                  Sinister Barrier

                  Eric Frank Russell · standalone novel · 1939

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                  Sinister Barrier is an English-language science fiction novel by British writer Eric Frank Russell. The novel originally appeared in the magazine Unknown in 1939, the first novel to appear in its pages. It was first published in book form in 1943 by The World's Work, Ltd. Russell revised and expanded the book for its first US publication by Fantasy Press in 1948. Most subsequent editions were based on the Fantasy Press version.

                • Cover of Cyber Way
                  Cyber Way

                  Alan Dean Foster · standalone novel · 1990

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                  The Navajo are famous for their rugs and sand paintings. What if those sand paintings with their mystical images and messages were all part of an ancient alien web that could bend and warp time and space as we know it? Two law enforcement officers are going to investigate this first hand - provided they can prevent a murdering psychopath from destroying our world first.

                • Cover of The Fear Index
                  The Fear Index

                  Robert Harris · standalone novel · 2011

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                  A computer designed for stock trading becomes sentient.

                • Cover of Psi Hunt
                  Psi Hunt

                  Michael Kurland · standalone novel · 1980

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                  Astral Emprise sold metaphysics, mysticism, paranormal phenomena, astrology lessons - and anything else that Believers were willing to spend a dollar on. Not the kind of operation the U. S. Navy was used to dealing with. Until the People's Republic of China decided that it would blow up half the United States with five telepathic kids who spent their days watching grade-B movies in an L.A. theater. And Lieutenant Junior Grade Robert Burrows was assigned to call their bluff... (adapted from one back cover blurb)

                • Cover of Flynn Carroll
                  Flynn Carroll

                  series · 4 books · 2013

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                • Cover of Dreamcatcher
                  Dreamcatcher

                  Stephen King · standalone novel · 2001

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                  Dreamcatcher is a 2001 science fiction horror novel by American writer Stephen King, featuring elements of body horror, suspense and alien invasion. The book, written in longhand, helped the author recuperate from a 1999 car crash, and was completed in half a year. According to the author in his afterword, the working title was Cancer. His wife, Tabitha King, persuaded him to change the title. A film adaptation was released in 2003.