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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 The Centurion Code

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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 Micro
                  Micro

                  Michael Crichton & Richard Preston · standalone novel · 2011

                  similar bygenetic engineeringour worldcontemporarytensetechno-thriller+1 more

                  Micro is a techno-thriller novel by Michael Crichton, the seventeenth under his own name and second to be published after his death, published in 2011. Upon his death in 2008, an untitled, unfinished manuscript was found on his computer, which would become Micro. Publisher HarperCollins chose science writer Richard Preston to complete the novel from Crichton's remaining notes and research, and it was finally published in 2011. Micro followed the historical thriller Pirate Latitudes, which was also found on his computer and published posthumously in 2009.

                • Cover of Maximum Ride
                  Maximum Ride

                  series · 12 books · 2005

                  similar bygenetic engineeringadventurousour world+2 more

                  Maximum Ride is a series of young adult science fantasy novels by American author James Patterson. The series centers on the adventures of Maximum "Max" Ride and her family, called the Flock, who are winged human-avian hybrids created at a lab called The School. The series was inspired by Patterson's earlier novels When the Wind Blows and The Lake House, which were intended for older readers.

                • K
                  Kairos

                  series · 11 books · 1962

                  completed

                  similar by+3 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 Fifth Column (Nathan M. Farrugia)
                  The Fifth Column (Nathan M. Farrugia)

                  series · 4 books · 2012

                  similar bycontemporarytensethriller & suspense+5 more

                • Cover of Nemesis Saga
                  Nemesis Saga

                  series · 8 books · 2012

                  similar byour worldcontemporarytensethriller & suspense+2 more

                  The Nemesis Saga is a series of six kaiju thriller novels written by American author Jeremy Robinson, featuring the massive Goddess of Vengeance Nemesis. Robinson noted that various classic kaiju films especially those featuring Godzilla and Gamera were big influences on the series.

                • Cover of Temporal Regulatory Authority / Jason Thanou
                  Temporal Regulatory Authority / Jason Thanou

                  series · 6 books · 2006

                  similar byadventuroustense+3 more

                • Cover of Fragment
                  Fragment

                  series · 2 books · 2009

                  similar by+6 more

                • Cover of Invasion
                  Invasion

                  Robin Cook · standalone novel · 1997

                  similar bygenetic engineeringour worldcontemporaryalien invasiontensethriller & suspense

                  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 Shane Schofield
                  Shane Schofield

                  series · 5 books · 1998

                  similar byadventurousour worldcontemporarytensethriller & suspense+2 more

                  Shane 'Scarecrow' Schofield is a US Marine captain who leads his unit through single-location, high-body-count action thrillers set in an Antarctic ice station, a disputed Pacific island, and a maximum-security prison built into a mountain, among others. Matthew Reilly's series opens with Ice Station (1998) and keeps escalating its set-pieces across Area 7, Scarecrow, Hell Island, and Scarecrow and the Army of Thieves. It's fast, gleefully over-the-top military action rather than realistic technothriller territory.

                • Cover of The Origin Mystery
                  The Origin Mystery

                  series · 3 books · 2013

                  similar bygenetic engineeringour worldcontemporarytense+1 more

                • Cover of When the Wind Blows
                  When the Wind Blows

                  series · 2 books · 1998

                  similar bygenetic engineeringcontemporarytensethriller & suspense+1 more

                • Cover of Patternist
                  Patternist

                  series · 6 books · 1976

                  completed

                  similar bygenetic engineering+2 more

                  The Patternist series is a group of science fiction novels by Octavia E. Butler that detail a secret history continuing from the Ancient Egyptian period to the far future that involves telepathic mind control and an extraterrestrial plague. A profile of Butler in Black Women in America notes that the themes of the series include "racial and gender-based animosity, the ethical implications of biological engineering, the question of what it means to be human, ethical and unethical uses of power, and how the assumption of power changes people."

                • Cover of The NUMA Files
                  The NUMA Files

                  series · 6 books · 2004

                  similar byadventurousour worldcontemporarytensethriller & suspense+1 more

                  Clive Cussler's NUMA Files novels follow Kurt Austin, leader of the National Underwater and Marine Agency's Special Assignments Team, and his colleague Joe Zavala, through globe-spanning adventure-thrillers mixing action, exotic locations and speculative science. Lost City finds them investigating a life-extending enzyme discovered deep in the North Atlantic, and the string of deaths and disappearances surrounding its discovery. Zero Hour, Nighthawk and the following novels continue Austin's missions, later written with Graham Brown after original co-author Paul Kemprecos.

                • Cover of Ender's Shadow
                  Ender's Shadow

                  series · 5 books · 1999

                  part of Ender's Game Universe

                  similar bytense+2 more

                  Orson Scott Card's Ender's Shadow retells the events of Ender's Game from the perspective of Bean, a physically stunted but ferociously intelligent street child recruited into the same Battle School program as Ender Wiggin. It launches the Shadow series, which follows Bean and other secondary Battle School characters into the political aftermath of the Formic Wars back on Earth, running parallel to and eventually past the timeline of Card's main Ender Quintet.

                • Cover of Anything You Can Do ...
                  Anything You Can Do ...

                  Randall Garrett · standalone novel · 1963

                  similar bygenetic engineeringour worldalien invasiontense+1 more

                  The world was gripped in terror when the Nipe, a lethal, alien fighting machine, crashlanded on Earth from outer space and began a nightmarish rampage of slaughter and destruction. Unable to stop the deadly, intelligent creature, scientists quickly developed a plan to turn an ordinary Earthman into a super-human with powers enough to conquer the monster. As the man chosen for the dangerous mission, Bart Stanton was not sure he wanted to give up his humanity. The Nipe seized the Earth's most vital defense secrets and Bart felt he had no choice but to go through with the plan. Then the Nipe mysteriously disappeared - and the only man who could locate the thing was also the only man who could destroy Bart. The world tottered as the three came face to face.. (from the back cover of the Leisure Books paperback edition)

                • Cover of The Monster Garden
                  The Monster Garden

                  Vivien Alcock · standalone novel · 1988

                  similar bygenetic engineeringour worldcontemporary+1 more

                  "When Frankie Stein's older brother brings home a bit of biological material from the mysterious laboratory where their cold, cerebral father works on genetic engineering, she puts some of it on the windowsill with a drop of her own blood in lieu of a petrie dish. After a flash of lightning, 'Monnie' (for monster) begins to grow rapidly ..." --KirkusReviews.com, contemporary starred review

                • Cover of Cleopatra
                  Cleopatra

                  series · 2 books · 2002

                  similar byour worldtensethriller & suspense+3 more

                • Cover of Going Wild
                  Going Wild

                  series · 3 books · 2016

                  similar byadventurousour worldcontemporary+2 more

                • Cover of Killer Species
                  Killer Species

                  series · 4 books · 2013

                  completed

                  similar bygenetic engineeringcontemporary+3 more

                • TB
                  Temperance Brennan Universe

                  series · 10 books · 2010

                  similar bygenetic engineeringcontemporary+3 more

                • Cover of 2312
                  2312

                  Kim Stanley Robinson · standalone novel · 2012

                  similar bygenetic engineering+2 more

                  In the eponymous year, when Earth's ecology is degraded and humanity has settled throughout the solar system by terraforming and genetic engineering, mysterious disasters strike some human communities and an assortment of human types from throughout the system seek to find and eliminate the cause.

                • Cover of Vitals
                  Vitals

                  Greg Bear · standalone novel · 2002

                  similar bygenetic engineeringour worldcontemporarytensethriller & suspense

                  From the flaps of the Del Rey first edition: "Hal Cousins is one of a handful of scientists nearing the most sought after discovery in human history: the key to short-circuiting the aging process. Fueled by a wealth of research, an overdose of self-confidence, and the money of influential patrons to whom he makes outrageous promises, Hal experiments with organisms living in the hot thermal plumes in the ocean depths. But as he journeys beneath the sea, his other world is falling apart. Across the country, scientists are being inexplicably murdered - including Hal's identical twin brother, who is also working to unlock the key to immortality. Hal himself barely eludes a cold-blooded attack at sea, and when he returns home to Seattle, he finds himself walking into an eerie realm where voices speak to him from the dead ... where a once-brilliant historian turned crackpot is leading him on a deadly game of hide-and-seek ... and where the beautiful, rich widow of his twin is more than willing to pick up the pieces of Hal's life-and take him places he's never been before. Suddenly Hal is trapped inside an ever-twisting maze of shocking revelations. For he is not the first person to come close to ending aging forever - and those who came before him will stop at nothing to keep the secret to themselves. Now every person on earth is at risk of being made an unsuspecting player in one man's spectacular and horrifying master plan. From the bottom of Russia's Lake Baikal to a billionaire's bionic house built into the cliffs of the Washington seashore, from the darkest days of World War II and the reign of Josef Stalin to the capitalist free-for-all that is the United States, Vitals tells an astounding tale of the most unimaginable scientific secret of all - exposed by the quest for immortality itself..."

                • Cover of Footfall
                  Footfall

                  Larry Niven & Jerry Pournelle · standalone novel · 1985

                  similar byour worldcontemporaryalien invasiontense+1 more

                  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 Prey
                  Prey

                  Michael Crichton · standalone novel · 2002

                  similar bygenetic engineeringour worldcontemporarytensetechno-thriller

                  Prey is the thirteenth novel by Michael Crichton under his own name and his twenty-third novel overall. It was first published in November 2002, making it his first novel of the twenty-first century. An excerpt was first published in the January–February 2003 issue of Seed magazine. Prey brings together themes from two earlier Crichton best-selling novels, Jurassic Park and The Andromeda Strain, and serves as a cautionary tale about developments in science and technology: in particular, nanotechnology, genetic engineering, and distributed artificial intelligence.