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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 Umbra

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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 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 Maximum Ride
                  Maximum Ride

                  series · 12 books · 2005

                  similar byscience fantasyscience fictionyoung adultadventurous+1 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.

                • Cover of Stephen King multiverse
                  Stephen King multiverse

                  universe · 46 books · 1967

                  Start hereThe Gunslinger · Start here

                  similar by+2 more

                  The man in black fled across the desert, and the gunslinger followed. So begins the long walk of Roland Deschain, last of an order of knight-errant pistoleers, across a land that has "moved on" — where the compass points drift, dead machines rot toward sentience, and the weave of what's real wears thin. His quest is the Dark Tower itself: a spire standing at the hub of every world that exists, the linchpin that holds all of them back from ruin. Roland's road runs eight volumes, from The Gunslinger through the closing Dark Tower, with the later, interleaved tale The Wind Through the Keyhole folding a story-within-a-story back into his youth. Along the way he draws a ka-tet — a fellowship bound by fate, not choosing — through doorways between worlds: a heroin-shackled New Yorker, a woman of two minds, a boy who dies twice. The Tower is also the secret axle around which the wider shelf of King's work turns; threads from The Stand, 'Salem's Lot and beyond wind quietly toward it. Expect a mongrel of Western, high fantasy, horror and decayed science fiction, told in a dusty, incantatory dialect all its own — ka, thankee-sai, the world that has moved on. This is King at his most mythic and most personal, a decades-spanning circle that rewards a patient reader. Begin at the beginning: The Gunslinger, then walk forward in publication order. There are other worlds than these — but this door opens first.

                • Cover of Restoree
                  Restoree

                  Anne McCaffrey · standalone novel · 1967

                  similar bytensescience fantasyscience fictionadventurous

                  Torn from Earth by a bizarre and nameless black force, Sara has no idea where she is or why she inhabits a beautiful new body. Controlled by brutal guards and tamed by terror, she can not comprehend her role as a nurse for a man who appears to be an idiot. She discovers that the planet she had been brought to was Lothar and that the man she was caring for was its Regent, Sara knows the restorees had to escape. When they do, they become fugitives on a world of multiple evils. (adapted from the back cover of the Baen edition)

                • Cover of Iron Widow
                  Iron Widow

                  series · 2 books · 2021

                  similar by+5 more

                  Xiran Jay Zhao's Iron Widow reimagines the rise of Chinese Empress Wu Zetian as a mecha-piloting heroine in Huaxia, a futuristic reinvention of Medieval China. Heavenly Tyrant continues the story as the second book in this young-adult science-fantasy duology.

                • Cover of The Bone World Trilogy
                  The Bone World Trilogy

                  series · 3 books · 2007

                  similar byscience fictionyoung adult+2 more

                  The Bone World Trilogy is a trilogy for young adults by Irish author Peadar Ó Guilín. The series has elements of science fiction and fantasy.

                • Cover of Galactic Milieu
                  Galactic Milieu

                  series · 10 books · 1981

                  completed

                  similar bytensescience fiction+1 more

                  Galactic Milieu is a series of science fiction novels by Julian May. It is linked to her previously published series, the Saga of Pliocene Exile; and through the fantastical device of time-travel, acts as both a prequel and a sequel to this earlier series. The "Galactic Milieu" of the title is an interplanetary federation, and Earth's membership of it is a central plot concern.

                • K
                  Kairos

                  series · 11 books · 1962

                  completed

                  similar byscience fictionyoung adult+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).

                • LU
                  Lux Universe

                  series · 11 books · 2011

                  similar bytensescience fictionyoung adult+1 more

                • Cover of Ready Player One
                  Ready Player One

                  series · 3 books · 2011

                  similar byscience fictionadventurous+2 more

                  Ernest Cline's Ready Player One (2011) is set in a near-future dystopia where much of humanity escapes into the OASIS, a vast virtual-reality universe, and follows teenager Wade Watts as he chases an Easter egg hidden by the OASIS's late creator in a puzzle-based hunt worth a fortune. The 2020 sequel, Ready Player Two, picks up after Wade has gained control of the OASIS and follows him and his friends into a new quest built around a brain-computer interface the creator left behind.

                • Cover of Alliance-Union Universe
                  Alliance-Union Universe

                  universe · 173 books · 1976

                  Start hereCompany Wars · The central sequence

                  similar byscience fiction+2 more

                  The dark between the stars belongs to no one, and everyone who lives out here knows it: the merchanter Families hauling cargo between stations that cannot feed themselves, the Earth Company clutching at colonies it can no longer supply, the Union breeding its cloned azi to settle worlds faster than birth allows. C. J. Cherryh's Alliance-Union is a future history of humankind's spread across the third and fourth millennia, told from inside the pressure — no clean empires, only stations, ships, treaties, and the people caught in the machinery of who holds the jump-points. The sequence runs from the first laborious pre-FTL stations through the Company Wars, the independence struggle that breaks over Pell in Downbelow Station (Hugo, 1981), to the genetics and cold politics of Union's homeworld in Cyteen (Hugo, 1988) and its sequel Regenesis. Around that spine cluster the merchanter novels of trader Families, the Faded Sun trilogy of human envoys among the martial alien Mri, and the Chanur books, narrated from the hierarchical, whiskered viewpoint of the hani. On the isolated world of Merovin, the Merovingen Nights anthologies open the setting to other hands — Mercedes Lackey, Janet and Chris Morris, Nancy Asire — a shared world braided into the whole. What sets it apart is intimacy at scale. Cherryh drops you without a map into a single skull and lets you assemble the politics from what that person fears and bargains for; the aliens are genuinely alien, loyalty is always provisional, and the real antagonist is usually logistics. Most books stand alone, in her words, "like real history." The surest way in is Downbelow Station — the war seen from one besieged station — then Cyteen, for the mind that shaped the other side.

                • Cover of The Book of Ptath
                  The Book of Ptath

                  A. E. van Vogt · standalone novel · 1947

                  similar byscience fantasyscience fictionadventurous+1 more

                  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 Cosmic Trilogy (C. S. Lewis)
                  Cosmic Trilogy (C. S. Lewis)

                  series · 4 books · 1938

                  completed

                  similar byscience fiction+3 more

                  The Space Trilogy is a series of science fiction novels by British writer C. S. Lewis. The trilogy consists of Out of the Silent Planet (1938), Perelandra (1943), and That Hideous Strength (1945). A philologist named Elwin Ransom is the protagonist of the first two novels and an important character in the third.

                • Cover of Firebird (Claudia Gray)
                  Firebird (Claudia Gray)

                  series · 4 books · 2014

                  similar byscience fictionyoung adult+3 more

                • Cover of Tripods
                  Tripods

                  series · 4 books · 1967

                  completed

                  similar bytensescience fictionyoung adult+1 more

                  The Tripods is a series of young adult science fiction novels by John Christopher. The series takes place in a post-apocalyptic world where humanity is enslaved by "Tripods"—gigantic three-legged walking machines piloted by an alien race later identified as the "Masters". The first two books were the basis of a science fiction TV series, produced in the United Kingdom in the 1980s.

                • Cover of Forerunner
                  Forerunner

                  series · 5 books · 1960

                  completed

                  similar byscience fiction+2 more

                  Forerunner and its sequel, Forerunner: The Second Venture, follow a young woman on an alien world who joins forces with an off-world traveler on a dangerous search for relics of a vanished, ancient civilization, hoping to find clues to how civilization itself began. It is a self-contained two-book adventure by Andre Norton rather than part of a longer sequence, later gathered as the omnibus The Forerunner Factor.

                • Cover of Tunnel in the Sky
                  Tunnel in the Sky

                  Robert A. Heinlein · standalone novel · 1955

                  similar bytensescience fictionyoung adultadventurous

                  As the final test of a survivalist/explorer class, teenagers are dumped on an alien planet to use their skills while awaiting pickup. But something has gone wrong, and they find they are on their own.

                • Cover of The Merchant Princes
                  The Merchant Princes

                  series · 14 books · 2004

                  similar bytensescience fantasyscience fiction

                  The Merchant Princes is a science fantasy and alternate history series of nine novels by British writer Charles Stross. In the series, there exist a number of parallel worlds, all of which are on the same geographical Earth but with different societies at different points of development. Members of a certain bloodline can travel between these worlds along with their immediate possessions. The series largely follows Miriam Beckstein, a technology journalist raised in a familiar "normal" Earth, who discovers she was born in a parallel world and is a member of this bloodline. She quickly becomes entangled in political maneuvering and assassination plots with her estranged family. Miriam uses modern technology and investigative journalism to attempt to stay a step ahead.

                • Cover of The Cinder Spires
                  The Cinder Spires

                  series · 3 books · 2015

                  similar by+4 more

                  Jim Butcher's Cinder Spires series opens with The Aeronaut's Windlass (2015), a steampunk fantasy set among tower-dwelling city-states where airships duel with etheric weapons and intelligent cats share the world with humans. Continuing with Warriorborn and The Olympian Affair, it marks a departure in setting from Butcher's contemporary-fantasy Dresden Files while keeping his fast-paced adventure style.

                • Cover of Have Space Suit - Will Travel
                  Have Space Suit - Will Travel

                  Robert A. Heinlein · standalone novel · 1958

                  similar bytensescience fictionyoung adultadventurous

                  From the back cover of the Del Rey 9th printing: "Skyjacked - Everything happened at once. One minute Kip Russell was walking about in his own backyard, testing out an old space suit and dreaming about going to the moon - and the next he was out cold and the captive of an insidious space pirate. The whole thing seemed like a very bad dream until he discovered he wasn't the only prisoner on board. Then the reality of the situation became inescapable. He - along with the daughter of a world-renowned scientist and a beautiful creature from an alien planet - had been skyjacked by a monstrous extraterrestrial and they were on their way to the Moon... a journey toward a fate worse than death!"

                • Cover of Divergent
                  Divergent

                  series · 10 books · 2011

                  similar bytensescience fictionyoung adult

                  Divergent, also known as The Divergent Series, is a series of young adult dystopian novels by American novelist Veronica Roth set in a post-apocalyptic dystopian Chicago. The trilogy consists of Divergent (2011), Insurgent (2012), and Allegiant (2013). A related book, Four (2014), presents a series of short stories told from the perspective of one of the trilogy's characters, the male love interest Tobias. A later short story, We Can Be Mended (2018), serves as an epilogue five years after the events of the trilogy, again from Tobias/Four's perspective.

                • Cover of Midnighters
                  Midnighters

                  series · 3 books · 2004

                  similar bytensescience fictionyoung adult+1 more

                  The Midnighters Trilogy is a science-fiction fantasy series written by Scott Westerfeld. It was published by Eos in 2004. It comprises three books: The Secret Hour, Touching Darkness. and Blue Noon. Over the course of the trilogy, Jessica encounters other Midnighters with whom she allies herself. The protagonists in the trilogy are the eponymous Midnighters Desdemona, Rex, Jonathan, and Melissa. The antagonists of the series are Darklings and Slithers, dangerous and powerful beings that created and live in the Blue Hour.

                • Cover of Incarceron
                  Incarceron

                  series · 2 books · 2007

                  similar byyoung adult+3 more

                  Incarceron follows two teenagers on opposite sides of an impossible prison: Finn, trapped inside the vast penal structure of Incarceron with no memory of how he got there, and Claudia, the warden's daughter living in a rigidly controlled world outside who comes to suspect Incarceron is more than a building. Catherine Fisher's 2007 novel blends fantasy and science fiction as the two search for a way to breach the boundary between them. The 2008 sequel, Sapphique, continues both characters' stories.

                • Cover of Dune
                  Dune

                  series · 20 books · 1963

                  part of Dune Universe

                  similar byscience fiction+1 more

                  Frank Herbert's Dune Chronicles opens with 1965's Dune, set on the desert planet Arrakis where House Atreides takes control of the only source of the vital spice melange and young Paul Atreides is pulled into a struggle over its politics and religion. Herbert carried the story forward across five further novels — Dune Messiah, Children of Dune, God Emperor of Dune, Heretics of Dune, and Chapterhouse: Dune — following Paul's line over the following millennia, before Brian Herbert and Kevin J. Anderson later extended the saga. Many other editions of these six novels are omnibus and box-set repackagings rather than separate stories.

                • Cover of H. G. Wells' War of the Worlds
                  H. G. Wells' War of the Worlds

                  universe · 65 books · 1898

                  Start hereThe War of the Worlds · Start here

                  similar byscience fiction+1 more

                  No one would have believed, in the closing years of the nineteenth century, that human affairs were being watched keenly and closely from the timeless worlds of space. And then the cylinders fell. H. G. Wells' War of the Worlds opens in the quiet of the Surrey commons, where a falling star proves to be the first Martian craft — and from the pit rise the towering tripods, the Heat-Ray, the choking Black Smoke and the creeping red weed, wielded by minds that regard mankind much as we regard the creatures we boil for supper. This is invasion rendered as natural disaster: cold, methodical, and vast beyond argument. Wells' 1898 novel is the seed; everything else grows from that Martian soil. The catalogue gathers direct sequels and continuations alongside a wide field of other hands. In War of the Worlds: Global Dispatches the invasion is retold across the whole planet through the eyes of Twain, Verne, Tolstoy, Lowell and Kipling; in the Manly Wade and Wade Wellman crossover, Sherlock Holmes, Watson and Professor Challenger take the field against the machines; and Scott Washburn's Great Martian War stretches the fighting into a decades-long alternate history of steam, artillery and grinding attrition. It is a loose shared world — no single decreed sequence, many voices answering one calamity. What sets this world apart is its refusal of heroics: the invaders fall not to generals but to the smallest things of Earth, humbling and indifferent. Begin, always, with Wells' original novel — it is short, and it is the ground every later book stands upon. From there follow your appetite: Global Dispatches for the panorama, the Holmes campaign for adventure, Washburn for the long war.