1 - 20 of 176 Works in Alternate Universe - Alien Invasion

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  1. Tags
    Summary

    Captain Matt (not to confuse you with matpat), the captain of the invincible gets up to drink a cup of coffee one morning after settling on the new found planet, but the wormhole has some unfinished business for him and drags him into another universe that got corrupted in the timeline, where monsters made by the wormhole run free on a way more bigger invincible and people driven insane. Now Matt has to fight his way through the psychopaths and monsters haunting this invincible in order to find out the cause of his appearance there, and learn the secrets of this new invincible.

    Language:
    English
    Words:
    2,911
    Chapters:
    2/?
    Kudos:
    1
    Hits:
    16
  2. Tags
    Summary

    NASA sent out three exploratory spacecrafts to find life outside of Earth. At least one was successful, but then that extraterrestrial life decided to come to Earth. And they weren't friendly. No, they needed men for slave labor and women for sex slave labor. They successfully take control of Earth and change human life forever.

    Anthology series with reoccurring settings and characters.

    Series
    Language:
    English
    Words:
    53,051
    Chapters:
    31/31
    Collections:
    1
    Comments:
    141
    Kudos:
    940
    Bookmarks:
    127
    Hits:
    224194
  3. Tags
    Summary

    Hellgirl is grieving over her brother's death, but she didn't know she had a surprise

    Series
    Language:
    English
    Words:
    1,913
    Chapters:
    2/2
    Hits:
    12
  4. Tags
    Summary

    (My take on Humans are Space Orcs!)
    Hitoshi is so over it.
    He's 13, and all he wants is a cup of coffee.
    With his purple hair and eyes, compared to everyone else, he's an outcast. Sure, odd colored hair has become normal as of late, but the eyes? No one's seen eyes like his before.
    His parents told him that his eyes were a gift.
    His parents are also dead.
    Now, Hitoshi, age 13, has to survive on a ship with a bunch of aliens who he can't even speak to.
    Did I mention the fighting ring? Yeah, he has to survive that too.
    Now poor Hitoshi, age 13-
    He just wants a cup of coffee.
    But that's too much to ask for, isn't it?

    (Updates every other Friday!)

    Series
    Language:
    English
    Words:
    14,995
    Chapters:
    14/?
    Comments:
    86
    Kudos:
    322
    Bookmarks:
    81
    Hits:
    5039
  5. Tags
    Summary

    The galactic council had found a new planet, it own sentient species have had long since died off. Planet large enough to hold important figureheads of the council, with enough resources to survive.

    Phil, Wilbur, Techno, Tubbo, and Ranboo (known as the SBI task force) had been left in charge of ensuring that the planet was safe to colonize.

    But what are they supposed to do, when the last of that long dead species is found?

    Or-
    Humans are dead. Well, Tommy's alive, somehow. Earth is practically just concrete ruins and space bois say ":0 new home pog?"

    TAGS CONTAIN SPOILERS AND WARNINGS AT THE START OF EACH CHAPTER!!!

    Series
    Language:
    English
    Words:
    5,664
    Chapters:
    6/?
    Collections:
    1
    Comments:
    32
    Kudos:
    276
    Bookmarks:
    44
    Hits:
    3274
  6. Tags
    Summary

    We are not alone, and neither are they. Empire vs. Earth, prelude to invasion as two societies clash. Multiple POV seriel. Please read and review for many Bothans died to research this story

    Language:
    English
    Words:
    229,923
    Chapters:
    92/?
    Comments:
    9
    Kudos:
    37
    Bookmarks:
    2
    Hits:
    795
  7. Tags
    Summary

    With Humanity on the counteroffensive, Marinette and her squad defends the barren land of what was once Paris from attacking extraterrestrials.

    UPDATE 11/15/2022: SOME EDITS AND REVISIONS TO THE STORY.

    Series
    Language:
    English
    Words:
    3,340
    Chapters:
    1/1
    Kudos:
    2
    Hits:
    65
  8. Tags
    Summary

    The arrival of extraterrestrials causes the world to descend into chaos.

    At the age of fourteen, Jooheon's world comes to an end. While his parents are missing in action, his brothers and him try to fight against all obstacles that come their way. But it will take all their strength if they want to stay alive.

    Language:
    English
    Words:
    22,219
    Chapters:
    7/?
    Comments:
    39
    Kudos:
    16
    Bookmarks:
    1
    Hits:
    403
  9. Tags
    Summary

    Emily leads a fairly uneventful life as a geneticist at the Centers for Disease Control and Prevention—until one day, an alien lifeform is brought to her for study. Apparently, this creature crash landed on Earth after his spaceship malfunctioned, and his body's resistance to most of the planet's bacteria and viruses makes him a cause for fascination at the CDC. However, despite the alien's genial, charming personality, everything is not as it seems, and matters are further complicated by the growing attraction between Emily and creature she is supposed to be studying.

    Series
    Language:
    English
    Words:
    1,168
    Chapters:
    1/1
    Collections:
    1
    Kudos:
    1
    Hits:
    23
  10. Tags
    Summary

    The atmosphere at Earth’s surface has become thick with clouds and nigh inhabitable to those who once called it home–according to his mother, it's some mixed consequence of aeroforming from the aliens and pollution before they ever landed at all. The humans that live here and venture outside can still breathe it, but not without difficulty. For Magnus and his companion, both not-entirely-human in entirely different ways, it is even more laborious.

    It was a three-day journey to retrieve Alexander and make his way home. The Elders refused to let an outsider know their location, and so Magnus had guided a blinded Alexander slowly through the remains of Earth’s sparse wilderness and to the resistance headquarters.

    Now, they sit in the foyer of his childhood residence, exhausted and at the mercy of his mother herself, armed with a spoon.

    Unfortunately for Alexander, awkward introductions to his family are perhaps the smallest challenge he'll face today.

    Series
    Language:
    English
    Words:
    2,017
    Chapters:
    1/1
    Kudos:
    14
    Bookmarks:
    1
    Hits:
    155
  11. Tags
    Summary

    just a little story with the help of AI.

    Aliens invade, hot takeover ensues.

    This is for fellow hypnosis lovers, so it doesn't have all that much actual smut. Sorry to disappoint.

    Language:
    English
    Words:
    5,988
    Chapters:
    4/4
    Kudos:
    106
    Bookmarks:
    5
    Hits:
    4121
  12. Tags
    Summary

    The Ulysses Disaster brought more than destroyed lives, wars, and super weapons. They seem to have attracted an extraterrestrial guest that elevates Erusea and Estovakia to new heights. All the while, Leo Collins, an average Erusean citizen losses his parents, flees to Yuktobania and enlists in the Yuktobanian air force to hopefully forge a new life. He gets thrusted into a world war where he will (hopefully) make new friends, fight for his country, discover why he feels next to no Gs, and the mystery of his old home.

    Language:
    English
    Words:
    5,623
    Chapters:
    3/?
    Kudos:
    1
    Hits:
    69
  13. Tags
    Summary

    With no threats for the time being, Silver goes back to his own timeline and stays there well into his adulthood. But what happens when on his 24th birthday, the legendary Black Arms invade his city?

    What's worse? Silver can't time travel like he used to. Being at least a hundred years into the future means that Sonic and the others are gone....

    Except for E-123 Omega and Metal.

    Silver enlists their help and together, they discover that Eclipse the Darkling is the one leading the Black Arms.

    Due to grief of his brother, Shadow the Hedgehog, dying in his arms...Eclipse has decided that everyone must suffer.

    Language:
    English
    Words:
    2,721
    Chapters:
    3/3
    Kudos:
    15
    Bookmarks:
    1
    Hits:
    224
  14. Tags
    Summary

    “Show me your other hand,” Aether commanded, hoping his voice didn’t sound nearly as scared as he felt. His knees had begun to shake a little and his head was spinning. ‘Are you really doing this, Aether? What if this is some helpless human, just like you! What then?’ He gritted his teeth.

    “I can’t,” said the boy.

    “Other hand.”

    “If I move this hand, I’m afraid my entire stomach might just fall out.”

    He smiled that damn bloody smile yet again.

    “I’m dying,” he stated. It was like a fact; a sad, pitiful, horror-story kind of fact. From where Aether stood, he looked to be nothing but a corpse. Helpless, still. “So you can either finish me off or help me. I already know you’re a human-”

    “How?” Aether asked, voice cracking a little.

    Or: A genshin impact 5th Wave AU. You don’t need to have watched/read it to understand :)
    Or or: Alien invasion + angst + Chilaether and some Xiaother

    Language:
    English
    Words:
    1,967
    Chapters:
    1/?
    Comments:
    6
    Kudos:
    10
    Hits:
    149
  15. Tags
    Summary

    Jason wakes up screaming in a yeerk pool.
    [Jason Todd in an Animorphs AU]

    Series
    Language:
    English
    Words:
    4,107
    Chapters:
    1/1
    Comments:
    44
    Kudos:
    84
    Bookmarks:
    5
    Hits:
    598
  16. Tags
    Summary

    In a world of misery, sufferance and poverty;

    Where being alive is a privilege that you had to tear yourself apart to

    Maurice will have to go by every rule put in place to survive even if it meant a lost life.

    Series
    Language:
    English
    Words:
    4,525
    Chapters:
    4/300
    Kudos:
    4
    Hits:
    180
  17. Tags
    Summary

    Gabe wakes up on a train. A train that has taken him to a new city. A new home.

    City 17.

    Language:
    English
    Words:
    2,970
    Chapters:
    1/?
    Kudos:
    3
    Hits:
    49
  18. Tags
    Summary

    He was a wreck, he was so clumsy and unfit for this, he didn’t know how to survive, he wasn’t taught how to.

    Was it possible to practice survival?

    He was already getting out of breath, sweat culminating under his arms and dripping down his neck. Something stirred in his stomach, embarrassment, even as he walked alone, astray in a world of silence.

    It was absurd to think that two weeks ago he was snug in a bed, surrounded by familiar faces. He had friends to hang out in the park with and parents to come home to. He had warm meals and a bed to sleep in every evening. Tommy would always hear that one saying, that you don’t appreciate something until it's gone. Tommy never believed it, he thought it was a platitude, something to keep the people humble, but he supposed it was something he should have kept in mind. Because now he trudged through an ruined city with no hand to hold, and lost with nowhere to go.

     
    or

    crimeboys alien invasion brainrot. Tommy is utterly clueless until he finds a crazy man, the strangers to brothers pipeline is real.

    Language:
    English
    Words:
    11,130
    Chapters:
    2/?
    Kudos:
    4
    Hits:
    76
  19. Tags
    Summary

    They catch her off guard, jumping her in an alley despite her best effort to evade their scans, and she tries running, but a hand catches her ankle before she’s even able to think about the safest place to run.

     

    Her only option is to fight, and even though she knows where to strike, she knows what to do, she also hasn’t eaten anything substantial in a week, and it’s starting to slow her down.

     

     It’s a useless fight, but she fights nonetheless. There’s really nothing else she can do, even if she’s only one against a whole Horde.

    Catra and Adora are eighteen when the First Wave sweeps over Earth, robotic forces coming out and mining the planet for resources, turning humans into Hosts to help and killing anyone not viable for work.

    Language:
    English
    Words:
    18,258
    Chapters:
    2/3
    Collections:
    1
    Comments:
    18
    Kudos:
    75
    Bookmarks:
    8
    Hits:
    934
  20. Tags
    Summary

    George is one of the remaining humans left on earth after the Alien invasion started and wiped out most of humanity.

    His whole life changes yet again when his scent seems to be somehow special to the Aliens and now he's stuck with an Alien 'Queen' that seems to like him a bit too much.

    Series
    Language:
    English
    Words:
    10,545
    Chapters:
    2/3
    Comments:
    31
    Kudos:
    361
    Bookmarks:
    46
    Hits:
    7089

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