Loreful
HomeDiscover
Search series, authors…⌘K
Loreful

Reading orders for SF/F series and shared universes — with your place kept in every one.

Explore

UniversesSeriesWorksAuthorsAtlas

Help

FAQAboutSite map

Account & legal

Sign inCreate accountPrivacyTerms

Data

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 Extinction Code

anchored on:science fictionour world

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 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 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+2 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.

                • Cover of The Triffids
                  The Triffids

                  series · 3 books · 1951

                  similar byscience fictionsurvivalour worlddarkpost-apocalyptic+2 more

                  John Wyndham's The Day of the Triffids (1951) opens with a meteor-shower-like event that leaves most of Britain's population blind, throwing civilization into collapse just as triffids, an aggressive and mobile species of poisonous plant, become free to hunt the helpless survivors. Simon Clark's authorized sequel The Night of the Triffids (2001) picks up a generation later, narrated by the original protagonist's son as he confronts a new triffid-dominated world, and John Whitbourn's The Age of the Triffids extends the shared setting further still. Together the three novels form a loose post-apocalyptic trilogy built on Wyndham's original premise rather than a tightly plotted single story.

                • Cover of Make Room! Make Room!
                  Make Room! Make Room!

                  Harry Harrison · standalone novel · 1966

                  similar byscience fictionsurvivalecological collapseour worldnear futuredarktense

                  Make Room! Make Room! is a 1966 science fiction novel written by Harry Harrison exploring the consequences of both unchecked population growth on society and the hoarding of resources by a wealthy minority. It was originally serialized in Impulse magazine.

                • Cover of Forge of God
                  Forge of God

                  series · 2 books · 1987

                  completed

                  similar byscience fictionsurvivaldarktense+2 more

                  The Forge of God (1987) is Greg Bear's science fiction novel about Earth's discovery that it is the target of an incomprehensible, overwhelming alien attack, following scientists and ordinary people as they try to understand what is destroying the planet. Its 1992 sequel, Anvil of Stars, follows a group of young survivors sent on a mission of interstellar retaliation, continuing directly from the first book's ending.

                • Cover of Mother of Storms
                  Mother of Storms

                  John Barnes · standalone novel · 1994

                  similar byscience fictionsurvivalecological collapseour worldnear futuretensepost-apocalyptic+1 more

                  From the flaps of the Tor first edition: "It is 2028. A strike to destroy an illegal Arctic weapons cache has a catastrophic side effect. Massive amounts of energy are liberated from the polar ice, suddenly warming the Earth's climate. In the middle of the Pacific, a gigantic hurricane thousands of miles across is forming, larger than any in human history. A storm with winds of supersonic speed. A storm that changes direction at whim. A storm that refuses to die. A storm so vast it spawns dozens more in its wake... Blinded by intrigue, expedience, and greed, the world's politicians and power brokers have ignored the killer storms threat until it is too late. Already the death toll is in the tens of millions, as it savages the Pacific coast, while its devil's brood of smaller storms are wreaking havoc across the face of the planet. While the survivors scramble for advantage, a handful of courageous men and women undertake a daring, desperate plan to save humanity from total destruction - a plan so visionary it may alter forever the future of the human race."

                • Cover of The Windup Universe
                  The Windup Universe

                  series · 3 books · 2005

                  similar byscience fictionecological collapseour worldnear futuredark+1 more

                • Cover of The Kraken Wakes
                  The Kraken Wakes

                  John Wyndham · standalone novel · 1953

                  similar byscience fictionsurvivalour worlddarktensepost-apocalyptic+1 more

                  " Behind a spectacular meteor shower actually hides the beginning of an invasion by a mysterious and powerful alien race. Earth's life is disrupted by the attacks of extraterrestrials whose war machines, emerging from the depths of the oceans, seem indestructible. The coalitioned forces of the whole world are worthless, powerless in the face of the indecipherable and deadly plans of a superior intelligence, capable of bringing the entire planet to the brink of catastrophe" Goodreads May 20, 2022

                • Cover of The Hopkins Manuscript
                  The Hopkins Manuscript

                  R. C. Sherriff · standalone novel · 1939

                  similar byscience fictionsurvivalecological collapseour worldnear futuredarktensepost-apocalyptic

                  The Hopkins Manuscript is a dystopian science fiction novel by R. C. Sherriff, first published in 1939 by Victor Gollancz. In 1958 it was reissued in a revised edition as a Pan paperback under the title The Cataclysm. The novel was later republished under its original title by The Macmillan Company in 1963 and by Persephone Books in 2002.

                • Cover of Tripods
                  Tripods

                  series · 4 books · 1967

                  completed

                  similar byscience fictionour worldnear futuretensepost-apocalyptic+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 NASA Trilogy
                  NASA Trilogy

                  series · 4 books · 1996

                  similar byscience fictiontense+5 more

                  The NASA Trilogy consists of three hard science fiction novels written by British science fiction author Stephen Baxter. They were published from 1996 to 1998. These books explore the possibilities of the American space program if the circumstances had been different. They have generally darker tones than his other books and are critical of NASA. They consist of:

                • Cover of Colony
                  Colony

                  Ben Bova · standalone novel · 1978

                  similar byscience fictionsurvivalnear futuretense+3 more

                  Colony continues the story Ben Bova began in Millennium, following astronaut-turned-administrator Chet Kinsman years later as the head of an orbiting space habitat that has become Earth's only real refuge from a planet buckling under overpopulation, food shortages and unrest. Getting a place in the habitat is a matter of life and death for millions who will never be chosen, and as Earth's governments grow more desperate to control or dismantle the colony outright, Kinsman has to decide how far he'll go to protect the world he's built off-world. Bova later folded both novels together into the omnibus The Kinsman Saga. Part of Ben Bova's Chet Kinsman series.

                • Cover of Flood
                  Flood

                  series · 6 books · 2008

                  similar byscience fictionsurvivalecological collapsenear future+4 more

                  In Stephen Baxter's Flood, sudden seismic upheaval releases immense reservoirs of water trapped deep beneath Earth's crust, and sea levels begin climbing far faster than anyone can adapt to, forcing a handful of survivors to watch coastlines and then continents disappear. The 2009 sequel, Ark, follows a parallel thread of people who instead gamble everything on a desperate escape from the drowning planet. Together the two books trace roughly a half-century of civilizational collapse and reinvention as dry land runs out.

                • Cover of Where Late the Sweet Birds Sang
                  Where Late the Sweet Birds Sang

                  Kate Wilhelm · standalone novel · 1976

                  similar byscience fictionsurvivalecological collapseour worldnear futuredarkpost-apocalyptic

                  Where Late the Sweet Birds Sang is a science fiction novel by American writer Kate Wilhelm, published in 1976. The novel is composed of three parts, "Where Late the Sweet Birds Sang," "Shenandoah," and "At the Still Point," and is set in a post-apocalyptic era, a concept popular among authors who took part in the New Wave Science Fiction movement in the 1960s.

                • Cover of Ship Breaker
                  Ship Breaker

                  series · 3 books · 2010

                  similar byscience fictionsurvivalnear futuredarktensepost-apocalyptic+2 more

                  Nailer works a light-crew scavenging copper wire and scrap from beached oil tankers on a Gulf Coast reshaped by rising seas and vanished order, until a wrecked clipper ship washes ashore carrying a half-drowned girl from the wealthy world he'll never belong to. Paolo Bacigalupi's Ship Breaker follows Nailer as helping her pulls him out of his abusive father's orbit and into a much larger, more dangerous game involving her family's fortune. The sequels The Drowned Cities and Tool of War widen the same flooded, resource-scavenging future to new characters and coastlines.

                • Cover of Dune
                  Dune

                  series · 20 books · 1963

                  part of Dune Universe

                  similar byscience fiction+2 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 War Against the Chtorr
                  War Against the Chtorr

                  series · 7 books · 1983

                  similar byscience fictionsurvivalecological collapsenear futuredarktensepost-apocalyptic+1 more

                  The War Against the Chtorr is a series of science fiction novels by American writer David Gerrold. The Chtorr series was originally planned as a trilogy, but as the story became more intricate, Gerrold realized that three books would not be enough for him to tell the entire story. For a time, he was uncertain how many books there would be in the end but plans on seven. As of 2022, four books have been completed. As of 2017, a fifth and sixth were in the works, 24 years after the publication of the fourth book.

                • Cover of Library of America P. K. Dick Collection
                  Library of America P. K. Dick Collection

                  series · 9 books · 1962

                  completed

                  similar byscience fictionnear future+2 more

                • Cover of Maze Runner
                  Maze Runner

                  series · 11 books · 2009

                  similar byscience fictionsurvivalnear futuretensepost-apocalyptic+2 more

                  The Maze Runner is a series of young adult dystopian science fiction novels written by American author James Dashner. The series consists of the trilogy The Maze Runner (2009), The Scorch Trials (2010) and The Death Cure (2011), as well as two prequel novels, The Kill Order (2012) and The Fever Code (2016). A novella titled Crank Palace (2020) and a companion book titled The Maze Runner Files (2013) have also been released. A sequel trilogy in the series titled The Maze Cutter takes place 73 years following the events of The Death Cure and consists of the novels The Maze Cutter (2022), The Godhead Complex (2023), and The Infinite Glade (2025).

                • Cover of Gold Fame Citrus
                  Gold Fame Citrus

                  Claire Vaye Watkins · standalone novel · 2015

                  similar byscience fictionsurvivalecological collapseour worldnear futuredarkpost-apocalyptic+1 more

                  Gold Fame Citrus is a 2015 speculative fiction novel by Claire Vaye Watkins. It is her second book, but her first novel. The work received positive reviews.

                • Cover of The Last Gasp
                  The Last Gasp

                  Trevor Hoyle · standalone novel · 1983

                  similar byscience fictionsurvivalecological collapseour worldnear futuredarktense

                  From the flaps of the Crown first edition: "When British marine biologist Gavin Chase stepped out into the windswept wastes at the Halley Bay antarctic research station one morning, the last thing he expected to see was a sled team coming out of nowhere carrying a half-mad, half-frozen Russian scientist babbling an incomprehensible warning. But that warning would threaten the future of the human race and force Chase to make some of the hardest decisions of his life. Months later, at a Geneva environmental conference, Chase meets Cheryl Detrick, the daughter of Theo Detrick, the grand old man of diatom research. Chase, the Detricks, and Soviet scientist Boris Stanovnik theorize that the oxygen-producing microscopic plants of the world's oceans are dying and the level of atmospheric pollutants has finally exceeded the ability of the planet's ecology to recycle them. There is also good reason to believe that the superpowers are planning to wage a new type of environmental warfare. Sooner or later there will be nothing left to breathe. So begins a race against the future. Chase and Cheryl, now lovers, struggle to avert ecological catastrophe as agents of the military-industrial complex hunt them down... and as a growing belt of unbreathable gases spreads outward from the equator, uprooting millions. Their enemies are Lloyd Madden, an insane military mastermind planning to seed the earth with poison and then repopulate it with a race of mutants, and Joseph Earl Gelstrom, a wealthy chemical manufacturer who has Cheryl's father killed to hide his involvement. But Gelstrom himself falls victim to pollution sickness, and he repents. To raise money to finance a research team, Chase must make an unholy alliance with the dying Gelstrom, but this is too much for Cheryl, who leaves him. As more and more of the world becomes uninhabitable, as industries and governments collapse and chaos reigns, as the oceans fill up with dioxin, as the climate changes and mutant life-forms encroach upon the last refuges of humankind, Chase leads a last desperate mission to find and rescue Cheryl and to lead his team of scientists to safety."

                • Cover of Patternist
                  Patternist

                  series · 6 books · 1976

                  completed

                  similar byscience fictiondark+3 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 Death of Grass
                  The Death of Grass

                  John Christopher · standalone novel · 1956

                  similar byscience fictionsurvivalecological collapseour worlddarktensepost-apocalyptic

                  The Death of Grass is a 1956 post-apocalyptic science fiction novel written by the English author Sam Youd under the pen name John Christopher. The plot concerns a virus that kills off grass species, including rice and wheat. The Death of Grass was the first of several post-apocalyptic novels written by Youd. The novel was written in a matter of weeks and liberated him from his day job.

                • Cover of The Ministry for the Future
                  The Ministry for the Future

                  Kim Stanley Robinson · standalone novel · 2020

                  similar byscience fictionsurvivalecological collapseour worldnear future+1 more

                  The Ministry for the Future is a climate fiction novel by American science fiction writer Kim Stanley Robinson, published in 2020. Set in the near future, the novel follows a subsidiary body, established under the Paris Agreement, whose mission is to act as an advocate for the world's future generations of citizens as if their rights were as valid as the present generation's. While the ministry pursues various ambitious projects, the effects of climate change are determined to be the most consequential. The plot primarily follows Mary Murphy, the head of the titular Ministry for the Future, and Frank May, an American aid worker traumatized by experiencing a deadly heat wave in India. Many chapters are devoted to other characters' accounts of future events, as well as their ideas about ecology, economics, and other subjects.

                • Cover of Books of Ember
                  Books of Ember

                  series · 4 books · 2003

                  similar byscience fictionsurvivaltensepost-apocalyptic+2 more

                  Jeanne DuPrau's Books of Ember begins with The City of Ember (2003), in which two teenagers in a decaying underground city search for a way to the surface before its failing infrastructure kills everyone left behind. The post-apocalyptic quartet continues with The People of Sparks, following survivors after they reach the world above, and concludes with The Prophet of Yonwood and The Diamond of Darkhold.