Books like 'The Underground'

Readers who enjoyed The Underground by K.A. Applegate & Katherine Applegate also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.

sc-fi  action / adventure  mystery  space  urban fantasy  military, war & conflict  aliens  animals  children  shapeshifters 

  • Age of Deception by T.A. White

    Age of Deception by T.A. White

    Rated: 4.55 of 5 stars
    · 30 ratings
    War hero and daughter to two Houses, Kira is just beginning to learn how deep the rabbit hole goes. Agreeing to accompany her father’s people back to their homeworld, Kira Forrest prepares for the fight of her life. She’s agreed to undertake the Trial of the Broken, a rite of passage every member of her father’s House must pass...
  • Sword of Mars by Glynn Stewart

    Sword of Mars by Glynn Stewart

    Rated: 4.49 of 5 stars
    · 24 ratings
    A defector with a dangerous leadA chance to speak for the silentA perilous quest into enemy starsWhen the star system of Legatus was preparing to secede from the Protectorate of the Mage-King of Mars, it was the secret agents of the Legatan Military Intelligence Directorate that laid the groundwork and fought the covert war to make it happen...
    Categorized as:
    aliens  invasion  war  action-adventure  adult  angst  audiobook  book
  • Alien Arcana by Glynn Stewart

    Alien Arcana by Glynn Stewart

    Rated: 4.35 of 5 stars
    · 31 ratings
    An alien ruinA murdered archeologistAn ancient secret—and a conspiracy that will kill to keep it! When a scientist is murdered after finding signs of alien magic in an archeological dig, Mage Damien Montgomery, Hand of the Mage-King of Mars, is sent to investigate both the murder and the alien runes...
    Categorized as:
    aliens  drama  invasion  war  action-adventure  adult  audiobook  book
  • Judgment of Mars by Glynn Stewart

    Judgment of Mars by Glynn Stewart

    Rated: 4.37 of 5 stars
    · 28 ratings
    A war fought in the shadowsA conspiracy shattered in fireA moment of weakness… When politics are played for blood. The destruction of the secret archive of the Royal Order of Keepers on Mars has left Damien Montgomery, Hand of the Mage-King, with his enemies defeated, his lover dead—and his questions unanswered...
  • Alpha Class: Engineering by T.S. Paul, Michael Anderle

    Alpha Class: Engineering by T.S. Paul, Michael Anderle

    Rated: 4.40 of 5 stars
    · 10 ratings
    Wide Open Spaces. Ancient Ruins. Pissed Off Governments. Five Adventurous Students. What could possibly go wrong?Tag along as we follow Alpha Class when they study with Jeo, the lead of the Engineering team, and learn about engineering by reviewing important marvels across the earth.Without getting permission.If they thought the moon was dangerous, wait till they return to Earth...
  • Sweep in Peace by Ilona Andrews

    Sweep in Peace by Ilona Andrews

    Rated: 4.21 of 5 stars
    · 47 ratings
    Dina DeMille isn't your typical Bed and Breakfast owner. Her inn defies laws of physics, her dog is secretly a monster, and the only permanent guest of the inn is a former Galactic tyrant with a price on her head...
  • Mage-Provocateur by Glynn Stewart

    Mage-Provocateur by Glynn Stewart

    Rated: 4.38 of 5 stars
    · 21 ratings
    Vengeance hunts them. Rebellion seeks them. Loyalty commands them. The shadows will fear them. Captain David Rice and Mage Maria Soprano have made their choice, signing up with the Martian Interstellar Security Agency and converting Red Falcon into a covert operations ship for the Protectorate...
  • Obsidian Detective by Michael Anderle

    Obsidian Detective by Michael Anderle

    Rated: 4.25 of 5 stars
    · 8 ratings
    Two Rebels whose Worlds Collide on a Planetary Level. On the fringes of human space, a murder will light a fuse and send two different people colliding together. She lives on Earth, where peace among the population is a given. He is on the fringe of society where authority is how much firepower you wield. She is from the powerful, the elite. He is with the military...
  • Insignia by S.J. Kincaid

    Insignia by S.J. Kincaid

    Rated: 4.15 of 5 stars
    · 36 ratings
    The earth is in the middle of WWIII in Insignia, the first entry in S. J. Kincaid's fast-paced sci-fi adventure trilogy perfect for fans of Ender's Game.The planet's natural resources are almost gone, and war is being fought to control the assets of the solar system. The enemy is winning. The salvation may be Tom Raines. Tom doesn't seem like a hero. He's a short fourteen-year-old with bad skin...
  • Mission Inadvisable by J.S. Morin

    Mission Inadvisable by J.S. Morin

    Rated: 4.17 of 5 stars
    · 6 ratings
    Part-time heroes. Full-time outlaws. Carl Ramsey has done the unthinkable: he turned down a lucrative job. When the deed is too despicable even for outlaws like the Mobius crew, someone nasty had to be behind it. Carl and his friends decide to hunt down their potential employer and turn him over to the authorities...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  humor
  • Stowaway to Heaven by J.S. Morin

    Stowaway to Heaven by J.S. Morin

    Rated: 4.17 of 5 stars
    · 6 ratings
    If you can't beat 'em, hijack 'em. Push a man hard enough and long enough and he's going to push back. Carl Ramsey finally has a plan to deal with transgalactic megacorp Harmony Bay. With the aid of a new ace up his sleeve, the Mobius crew finally have a heist that can put an end to the company's harassment. They're going to steal the ship responsible for Harmony Bay's black ops...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  humor
  • The Spaceship Next Door by Gene Doucette

    The Spaceship Next Door by Gene Doucette

    Rated: 4.06 of 5 stars
    · 17 ratings
    The world changed on a Tuesday.When a spaceship landed in an open field in the quiet mill town of Sorrow Falls, Massachusetts, everyone realized humankind was not alone in the universe. With that realization, everyone freaked out for a little while.Or, almost everyone. The residents of Sorrow Falls took the news pretty well...
  • Alien Tango by Gini Koch

    Alien Tango by Gini Koch

    Rated: 4.10 of 5 stars
    · 26 ratings
    For Alien Super-Being Exterminator Katherine "Kitty" Katt, anti-alien conspiracies, threats from outer space, and a couple of killer alligators are all in a day's work. It's been five months since Kitty joined Centaurion Division, working with the aliens from Alpha Centauri. She and Jeff Martini have grown closer and life looks rosy...
  • Killbox by Ann Aguirre

    Killbox by Ann Aguirre

    Rated: 4.07 of 5 stars
    · 30 ratings
    Talk is cheap when lives are in jeopardySirantha Jax is a “Jumper,” a woman who possesses the unique genetic makeup needed to navigate faster than light ships through grimspace. With no tolerance for political diplomacy, she quits her ambassador post so she can get back to saving the universe the way she does best—by mouthing off and kicking butt.And her tactics are needed more than ever...
  • Havoc by Ann Aguirre

    Havoc by Ann Aguirre

    Rated: 4.09 of 5 stars
    · 24 ratings
    The Conglomerate’s most dangerous convicts have made the prison ship Perdition their home. And they will defend it…Perdition is under siege. Mercenaries have boarded the station with orders to take control of the facility—and execute the prisoners. Their commander is offering full pardons to the first five inmates willing to help the mercs complete their mission...
  • The Solution by K.A. Applegate, Katherine Applegate

    The Solution by K.A. Applegate, Katherine Applegate

    Rated: 4.00 of 5 stars
    · 16 ratings
    David, the newest Animorph, is not what he appears. His need to control the other Animorphs and Ax is all he thinks about. And the things he does are starting to break up the group.Rachel and the others know that time is running out. The newest battle against the Yeerks is the most important one yet. And it's not one that will wait. Winning this fight could mean slowing down the invasion...
  • The Rebirths of Tao by Wesley Chu

    The Rebirths of Tao by Wesley Chu

    Rated: 4.00 of 5 stars
    · 14 ratings
    The Tao trilogy is over but the story continues with The Rise of Io in 2016! Many years have passed since the events in The Deaths of Tao. The world is split into pro-Prophus and pro-Genjix factions, and is poised on the edge of a devastating new World War. A Genjix scientist who defects to the other side holds the key to preventing bloodshed on an almost unimaginable scale...
  • Chaos Reigning by Jessie Mihalik

    Chaos Reigning by Jessie Mihalik

    Rated: 4.05 of 5 stars
    · 28 ratings
    Interplanetary intrigue and romance combine in this electrifying finale to the Consortium Rebellion series.As the youngest member of her High House, Catarina von Hasenberg is used to being underestimated, but her youth and flighty, bubbly personality mask a clever mind and stubborn determination...
  • Collusion Course by J.S. Morin

    Collusion Course by J.S. Morin

    Rated: 4.00 of 5 stars
    · 8 ratings
    The biggest problem with employing criminals is that they're criminals. What's a guy gotta do to get a little respect? As the head of an up-and-coming criminal empire, Carl Ramsey just can't seem to catch a break. Stranded in the middle of nowhere, he is forced to rely on loyalty, savvy, and the promise of a big payday to keep the rank and file in line...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  humor
  • Earth's First by M.J. Caan

    Earth's First by M.J. Caan

    Rated: 4.00 of 5 stars
    · 6 ratings
    No one ever said that you have to accept the great responsibility that comes with great power. Maura Riley learns this the hard way after a fateful first contact with an alien being that literally fell from the stars...
  • The Pretender by K.A. Applegate, Katherine Applegate

    The Pretender by K.A. Applegate, Katherine Applegate

    Rated: 3.94 of 5 stars
    · 16 ratings
    Someone's looking for Tobias. Someone who says she's his long-lost cousin. Tobias isn't sure the person is telling the truth. But she's really nice, and knows a lot about him. And what she tells Tobias definitely gets his attention.It seems a lawyer has discovered Tobias's father's last will and testament. So, Tobias needs to attend the reading. His "cousin" even offers to go along...
  • The Goblin Reservation by Clifford D. Simak

    The Goblin Reservation by Clifford D. Simak

    Rated: 3.99 of 5 stars
    · 26 ratings
    First-class entertainment (The Sunday Times) from a classic SF author. En route to an interplanetary research mission, a scientist is abducted by a strange, shadowy race of aliens and taken to a previously uncharted planet, a storehouse of information that would be invaluable--even to an Earth so advanced that time travel allows goblins, dinosaurs, even Shakespeare to coexist...
  • Honor's Knight by Rachel Bach

    Honor's Knight by Rachel Bach

    Rated: 3.98 of 5 stars
    · 32 ratings
    The rollicking sequel to Fortune's Pawn -- an action packed science fiction novel. Devi Morris has a lot of problems. And not the fun, easy-to-shoot kind either. After a mysterious attack left her short several memories and one partner, she's determined to keep her head down, do her job, and get on with her life. But even though Devi's not actually looking for it -- trouble keeps finding her...
  • Woken Furies by Richard K. Morgan

    Woken Furies by Richard K. Morgan

    Rated: 3.97 of 5 stars
    · 41 ratings
    This is high action, ideas driven noir SF of the highest order. Morgan has already established himself as an SF author of global significance.Takeshi Kovacs has come home. Home to Harlan's World. An ocean planet with only 5 percent of its landmass poking above the dangerous and unpredictable seas...
  • A Smuggler's Conscience by J.S. Morin

    A Smuggler's Conscience by J.S. Morin

    Rated: 3.90 of 5 stars
    · 10 ratings
    The job: a delivery, no questions asked. The problem: curiosity is a deadly sin. A simple pickup and delivery. No questions asked; no looking inside the cargo. All it requires is a fast, stealthy ship and a crew who can keep their imaginations and consciences in check until the drop-off...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  heist
  • Adventure Capital by J.S. Morin

    Adventure Capital by J.S. Morin

    Rated: 3.88 of 5 stars
    · 8 ratings
    There's a new crime lord in this galaxy. Time to make crime actually pay. Carl Ramsey had a derelict battleship and a hundred stranded navy veterans fall into his lap. With Earth Navy happier pretending none of them existed, it only seemed logical to turn them into a criminal empire...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  humor
  • Darkness Falling by Ian Douglas

    Darkness Falling by Ian Douglas

    Rated: 3.88 of 5 stars
    · 8 ratings
    From New York Times Bestselling Author Ian Douglas comes the next chapter in his grand space odyssey, Andromedan Dark, Darkness FallingLord Commander Grayson St. Clair has guided the Tellus Ad Astra to a part of the universe no human—and possibly no race known to Man—has ever seen. Far from the worlds they know, the colony ship is on its own, facing . . . something that seems to have no weakness...
  • You, Robot by J.S. Morin

    You, Robot by J.S. Morin

    Rated: 3.83 of 5 stars
    · 6 ratings
    He knows the three laws, but they’re really more what you’d call "guidelines." Two and a half million terras worth of contraband won’t do Carl Ramsey any good unless he can find a buyer. But when dealing with that kind of money, any deal is liable to turn sour when it’s time to make the exchange. So when things go smoothly, Carl knows his luck can’t be that good...
    Categorized as:
    aliens  action-adventure  adult  audiobook  book  crime  fiction  humor
  • Cloak of War by Rhonda Mason

    Cloak of War by Rhonda Mason

    Rated: 3.83 of 5 stars
    · 6 ratings
    The bloody tournament to determine the new empress of the intergalactic empire may be over, but for exiled princess Kayla Reinumon, the battle is just beginning. To free her home planet from occupation, Kayla must infiltrate the highest reaches of imperial power. But when a deadly nanovirus threatens to ravage the empire, it will take more than diplomacy to protect her homeworld from all-out war...
  • The Change by K.A. Applegate, Katherine Applegate

    The Change by K.A. Applegate, Katherine Applegate

    Rated: 3.89 of 5 stars
    · 18 ratings
    Tobias has pretty much gotten used to his life. He's a red-tailed hawk with the mind of a kid. It was weird when he first got trapped in morph. But now it's almost okay. After all, how many kids actually get the chance to fly?Now Tobias is about to make a very special choice. A choice that the other Animorphs and Ax know nothing about. And it could mean the difference between being a hawk. .
  • Tale of the Thunderbolt by E.E. Knight

    Tale of the Thunderbolt by E.E. Knight

    Rated: 3.88 of 5 stars
    · 16 ratings
    As the Resistance attempts to overthrow their vampiric alien masters, elite Cat force member David Valentine embarks on a terrifying journey in search of a long-lost weapon that will guarantee their victory-and the end of the Kurian Order's domination of Earth...
  • Fortune's Pawn by Rachel Bach

    Fortune's Pawn by Rachel Bach

    Rated: 3.92 of 5 stars
    · 37 ratings
    Devi Morris isn't your average mercenary. She has plans. Big ones. And a ton of ambition. It's a combination that's going to get her killed one day - but not just yet. That is, until she just gets a job on a tiny trade ship with a nasty reputation for surprises...
  • The Escape by K.A. Applegate, Katherine Applegate

    The Escape by K.A. Applegate, Katherine Applegate

    Rated: 3.81 of 5 stars
    · 16 ratings
    Almost nothing could be as bad as finding out your mother is Visser One. The most powerful of all Vissers. The leader of the Yeerk invasion of Earth. But it happened to Marco. And even though he's been handling it pretty well, he knew there'd come a time when he'd have to face her again. Knowing that the Yeerk in her brain had taken his mother away...
  • The Alien Corps by P.J. McDermott

    The Alien Corps by P.J. McDermott

    Rated: 3.75 of 5 stars
    · 8 ratings
    She was fired after her last mission. Now she's back.Hickory and her team are assigned to the medieval planet Prosperine to deal with an upsurge in violence and religious fanaticism amongst the local population. There are claims of magic being performed by a mystic known to his followers as the Teacher...
  • The Warning by K.A. Applegate, Katherine Applegate

    The Warning by K.A. Applegate, Katherine Applegate

    Rated: 3.75 of 5 stars
    · 16 ratings
    Jake's made a pretty amazing discovery. It seems like there may be other people who know about the invasion. Others who know about the Yeerks. Jake finds a Web site devoted to the Yeerks. And Jake, the other Animorphs, and Ax aren't sure it's too good to be true.But if they try to investigate the site and it's a trap, there's no way the Yeerks won't find out who they are...
  • Inside Out by Maria V. Snyder

    Inside Out by Maria V. Snyder

    Rated: 3.79 of 5 stars
    · 28 ratings
    Keep Your Head Down.Don't Get Noticed.Or Else.I'm Trella. I'm a scrub. A nobody. One of thousands who work the lower levels, keeping Inside clean for the Uppers. I've got one friend, do my job and try to avoid the Pop Cops...
  • Koko the Mighty by Kieran Shea

    Koko the Mighty by Kieran Shea

    Rated: 3.50 of 5 stars
    · 6 ratings
    With an outstanding Ultimate Sanction bounty still on her head, Koko Martstellar (ex-mercenary and saloon madam extraordinaire) and Jedidiah Flynn (former orbital sky-cop) have narrowly escaped death in paradise.  Rescued during a storm, Koko and Flynn are taken in by what amounts to a self-sufficient outlander cult...
  • Gravity by Melissa West

    Gravity by Melissa West

    Rated: 3.75 of 5 stars
    · 20 ratings
    In the future, only one rule will matter:Don’t. Ever. Peek.Seventeen-year-old Ari Alexander just broke that rule and saw the last person she expected hovering above her bed — arrogant Jackson Locke, the most popular boy in her school. She expects instant execution or some kind of freak alien punishment, but instead, Jackson issues a challenge: help him, or everyone on Earth will die...
  • The Reaction by K.A. Applegate, Katherine Applegate

    The Reaction by K.A. Applegate, Katherine Applegate

    Rated: 3.72 of 5 stars
    · 18 ratings
    Rachel's got some pretty strange stuff happening. She can't control her morphing. One minute, she's doing homework. The next, she's morphing a full-grown crocodile, and—without returning to human form—she becomes an elephant. That's when the floor gives way and Rachel finds herself looking up at what used to be the kitchen ceiling...
  • The Forgotten by K.A. Applegate, Katherine Applegate

    The Forgotten by K.A. Applegate, Katherine Applegate

    Rated: 3.72 of 5 stars
    · 18 ratings
    There's been an accident. Someone crash-landed a Yeerk Bug fighter. And the Yeerks have been trying to cover it up—quickly. But not before Tobias spots it. So the Animorphs and Ax decide to steal the ship to show the world that Earth has been invaded.That's when things go terribly wrong. Before they know it, Jake, the other Animorphs, and Ax find themselves in another place. Another time...
  • The Long Earth by Terry Pratchett, Stephen Baxter

    The Long Earth by Terry Pratchett, Stephen Baxter

    Rated: 3.79 of 5 stars
    · 50 ratings
    NORMALLY, WHEN THERE WAS NOTHING TO DO, HE LISTENED TO THE SILENCE.The Silence was very faint here. Almost drowned out by the sounds of the mundane world. Did people in this polished building understand how noisy it was? The roar of air conditioners and computer fans, the susurration of many voices heard but not decipherable...
  • Wanderlust by Ann Aguirre

    Wanderlust by Ann Aguirre

    Rated: 3.75 of 5 stars
    · 31 ratings
    Sirantha Jax doesn’t take chances… she jumps at them…Sirantha Jax is a “Jumper,” a woman who possesses the unique genetic makeup needed to navigate faster than light ships through grimspace. Jax has worked for the Farwan Corporation her entire career...
  • The Pearl Wars by Nick James

    The Pearl Wars by Nick James

    Rated: 3.67 of 5 stars
    · 23 ratings
    A devastated Earth's last hope is found in Pearls: small, mysterious orbs that fall from space and are capable of supplying enough energy to power entire cities. Battling to control the Pearls are the Skyship dwellers--political dissidents who live in massive ships in the Earth's stratosphere--and the corrupt Surface government...
  • The Unknown by K.A. Applegate, Katherine Applegate

    The Unknown by K.A. Applegate, Katherine Applegate

    Rated: 3.63 of 5 stars
    · 16 ratings
    There's a new rumor in town. Someone has discovered an item that proves life on other planets exists. And they've been hiding it on a base called Zone 91. The Most Secret Place On Earth.Cassie, the other Animorphs, and Ax already know about life on other planets. Too well. They also realize the Yeerks will try to access Zone 91. To find out if what's there will threaten their mission...
  • The Cage by Megan Shepherd

    The Cage by Megan Shepherd

    Rated: 3.61 of 5 stars
    · 18 ratings
    When Cora Mason wakes in a desert, she doesn’t know where she is or who put her there. As she explores, she finds an impossible mix of environments—tundra next to desert, farm next to jungle, and a strangely empty town cobbled together from different cultures, all watched over by eerie black windows. And she isn’t alone...
  • Koko Takes a Holiday by Kieran Shea

    Koko Takes a Holiday by Kieran Shea

    Rated: 3.53 of 5 stars
    · 17 ratings
    Five hundred years from now, ex-corporate mercenary Koko Martstellar is swaggering through an early retirement as a brothel owner on The Sixty Islands, a manufactured tropical resort archipelago known for its sex and simulated violence. Surrounded by slang-drooling boywhores and synthetic komodo dragons, the most challenging part of Koko’s day is deciding on her next drink...
  • The Suspicion by K.A. Applegate, Katherine Applegate

    The Suspicion by K.A. Applegate, Katherine Applegate

    Rated: 3.62 of 5 stars
    · 26 ratings
    Cassie, the other Animorphs, and Ax have a few little problems. A few very little problems. Actually, the problems call themselves Helmacrons. They're less than an inch tall, and they're pretty upset at Cassie. They believe she stole their ship. Cassie thought it was just a toy, and gave it to charity. Now the Helmacrons want it back.So the Animorphs and Ax have a new dilemma...
  • The Adventures of Tom Stranger, Interdimensional Insurance Agent by Larry Correia, Adam Baldwin

    The Adventures of Tom Stranger, Interdimensional Insurance Agent by Larry Correia, Adam Baldwin

    Rated: 3.56 of 5 stars
    · 18 ratings
    Have you ever seen a planet invaded by rampaging space mutants from another dimension or Nazi dinosaurs from the future?Don't let this happen to you!Rifts happen, so you should be ready when universes collide. A policy with Stranger & Stranger can cover all of your interdimensional insurance needs...
The Underground by K.A. Applegate, Katherine Applegate
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