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  1. Tags
    Summary

    Once upon a time, there was a mountain. There were also two very curious teenage boys. One thing led to another, and, well...this is a tale not often told.

    Language:
    English
    Words:
    138,977
    Chapters:
    43/81
    Comments:
    107
    Kudos:
    62
    Bookmarks:
    17
    Hits:
    1483
  2. Tags
    Summary

    Player wish for SOMETHING new to happen. With that he changes script and Sans see world for what it is.

    Language:
    English
    Words:
    6,512
    Chapters:
    13/13
    Comments:
    3
    Kudos:
    9
    Hits:
    200
  3. Tags
    Summary

    Undertale (C) Toby Fox 2015-2020
    The Storyshift AU belongs to voltrathelively on Reddit
    Heads up, you DO NOT need to play through/watch a play-through before reading as I will explain everything about the game you'll need to know throughout the book.
    -
    The story follows 18 year-old Chara Dreemurr and her life, experiences, and struggles. The hole at the top of Mt. Ebott was said to be bottomless, but Chara proved that rumor to be wrong when she found herself at the bottom.
    (Full synopsis in the first chapter!)

    Language:
    English
    Words:
    6,694
    Chapters:
    4/?
    Comments:
    1
    Kudos:
    4
    Hits:
    34
  4. Tags
    Summary

    Five years later Frisk walked all the way back to the underground, looking for the only one who's still there after all these years. Maybe they can bring light to a flower left in the dark.

     
    I made this story for the Undertale 5th Anniversary.

    Language:
    English
    Words:
    1,458
    Chapters:
    1/1
    Kudos:
    13
    Hits:
    54
  5. Tags
    Summary

    This is about Sans and Papyrus having a younger sister who "dies" a long time before Frisk falls. But did she? Once the monsters are freed things change. Gaster is alive. He meets a young human girl and she isn't who she seems to be. Who is this girl? And what will the Undertale crew do when they find out her secrets? And what would happen if she is taken away from them? Read to find out!

     

    I ALSO DID NOT REALIZE FOR LIKE A WEEK THAT I SPELLED THE TITLE WRONG

    Language:
    English
    Words:
    22,764
    Chapters:
    13/?
    Comments:
    12
    Kudos:
    9
    Bookmarks:
    2
    Hits:
    259
  6. Tags
    Summary

    So Another Undertale story. Will contain AU'S and Classic. Takes place in an AU with all of the AU'S connected. In this universe people are born with three classes. Pet, one to obey a Master, Master one to control the pet and neutral, one who is neither pet nor master and is just a regular citizen. In this story Ink is a Prince, Nightmare is the King, Dream is the other Prince and Error is like the royal advisor. The bad sans' (Horror, Dust, Killer, Cross, Edge) are royal guards. Blueberry is a pet to Dust, Stretch is a Pet to Edge and his Sans(Red) is also his pet. Lust is a switch, he is pet to master but master to pet of Horror. Ink is in need of a Pet. Ink had just recently caught eyes on classic and wants him. Classic is a pet wolf skeleton hybrid. My OC Sam is a human directly descendant from the original seven mages and has the integrity soul trait. In this Fan fiction it it the second rarest trait. Determination is the first. Sam is a neutral switch and Dream notices them. He wants this unique rare human. Only character that belongs to me is my OC Sam. I will specify which AU's and characters do and don't belong to me.

    Language:
    English
    Words:
    16,673
    Chapters:
    11/?
    Kudos:
    7
    Bookmarks:
    1
    Hits:
    393
  7. Tags
    Summary

    10 years after the fight against the Subspace Army, the old group in Brawl finds out that their friends are either missing or dead and so by force embark on another dangerous adventure. When newcomers have heard of the returning Subspace Army, bigger than ever before, they would travel through different areas to uncover the truth of the Master Core and Tabuu.

    Series
    Language:
    English
    Words:
    647,767
    Chapters:
    102/?
    Comments:
    10
    Kudos:
    54
    Bookmarks:
    8
    Hits:
    4607
  8. Tags
    Summary

    Seeking shelter from a storm, a blind child descends into a realm of monsters. A chance meeting grants him a companion in the form of a ghostly girl garbed in the colors of flowers. Yet, what seems but a simple adventure becomes much more as memories of dark pasts claw their way to the surface. Lives forsaken, a name unspoken... what does this new future hold in store?

    Language:
    English
    Words:
    239,776
    Chapters:
    25/?
    Comments:
    81
    Kudos:
    229
    Bookmarks:
    29
    Hits:
    5918
  9. Tags
    Summary

    A human fell into the underground. Overnight, tens of monsters disappeared, along with the king and six human SOULs.

    The newly crowned king Papyrus and his brother, Sans, are left to pick up the pieces.

    Language:
    English
    Words:
    4,484
    Chapters:
    1/1
    Comments:
    14
    Kudos:
    22
    Bookmarks:
    4
    Hits:
    97
  10. Tags
    Summary

    Long ago, two races ruled over Earth: HUMANS and MONSTERS

    One day, a war broke out between the two races.

    After a long battle, the humans were victorious.

    They sealed the monsters underground with a magic spell.

    Many years later...

    Legends say that those who climb the mountain never return.
    So what happens when a human climbs the mountain and falls into the underground?

    Series
    Language:
    English
    Words:
    3,795
    Chapters:
    2/?
    Comments:
    7
    Kudos:
    101
    Bookmarks:
    9
    Hits:
    1288
  11. Tags
    Summary

    Arctale is a alternate story line that intertwines and mainly alters the events of Underverse and Xtale.

    From the events of the Timeline X, Cross absorbs the soul of the X-event, sealing it in his soul and corrupting his timeline. The energy dispersed causes the excess energy to convert into a blast, corrupting the universe most adjacent to it, a hybrid AU named Arctale.

    A human named Kate, a bearer of a white human soul, is the only recurring survivor of the event, and must find the cause of the event and a way to reverse the damage done to their world. It won't be easy, and the outer world may never let go of them.

    "Leap and reach into yourself,
    Your chest, your life.
    Travel back and see your health,
    Your joy, your strife.

    As long as you can sense and know,
    In health, in sight.
    That you will have the sense of hope,
    To always see the light".

    YOU ARE FILLED WITH HOPE.

    Language:
    English
    Words:
    5,982
    Chapters:
    4/?
    Collections:
    2
    Hits:
    19
  12. Tags
    Summary

    Undyne can't deny her responsibilities.
    If someone has to stop this human of spreading dust, it's her.

    Series
    Language:
    English
    Words:
    397
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    20
  13. Tags
    Summary

    Totem animals were creatures that every human and monster received at a young age. They were part of their soul that would stick with them infinitely. But one unfortune soul was born without one, and is destined to never be granted a totem animal. Frisk was her name, and spent years searching for an answer that would never come. Or so she thought. After a series of horrid events, a rare sorcerer's totem animals come to her. Their master, Sans, has discovered she possesses a power that could save their world from another great war. He thinks she is up for the task, but Frisk doesn't think the same.

    Language:
    English
    Words:
    1,375
    Chapters:
    1/?
    Kudos:
    24
    Bookmarks:
    7
    Hits:
    73
  14. Tags
    Summary

    The Judge was a sacred position in Monster culture. It was up to them to keep monster-kind safe from humans and corrupt monsters. They could see through your very being and judge you with no bias dictating their final jurisdiction. Every judge possessed both abilities into one and usually got a title off of their most prominent one.
    Fast forward to the day two skeletal twins were born with this sacred power, for the first time ever in recorded history. Sans and Papyrus, titled "First Belief" and "Final Hope" work in secret to keep the monsters safe.
    When their friends figure this out after reaching the surface, they demand the story from the two who reluctantly agree to tell them about it.

     

    Aka I suck at summaries, and this is about Sans and Papyrus becoming the "Royal Judges."

    Language:
    English
    Words:
    6,520
    Chapters:
    2/?
    Comments:
    5
    Kudos:
    30
    Bookmarks:
    7
    Hits:
    220
  15. Tags
    Summary

    Chara is dead. Asriel must take their soul, go through the barrier, and bring freedom to monsterkind. Everything is in his hands.

    Series
    Language:
    English
    Words:
    3,201
    Chapters:
    2/2
    Comments:
    4
    Kudos:
    14
    Hits:
    136
  16. Tags
    Summary

    "I hate her."

    "What?"

    The sound comes out weak and watery, Frisk looking up at them from where they've wedged themself firmly into a corner. The sight of their face, blackened with soot with wide, fearful eyes, only makes another wave of shuddering rage crawl up their back, and their fists tighten at their sides.

    "I hate her."

    Series
    Language:
    English
    Words:
    1,644
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    18
    Bookmarks:
    1
    Hits:
    127
  17. Tags
    Summary

    In Undertale, the monsters get their happy ending, but do they really deserve it? What if the humans found out about what happened to the other humans that fell underground? What if the humans learn what the monsters did to Frisk? What would happen to the monsters then? What will the humans do to retaliate against this injustice? Can Frisk stop this? Would they really want to?...

    Language:
    English
    Words:
    9,859
    Chapters:
    9/9
    Comments:
    11
    Kudos:
    50
    Bookmarks:
    6
    Hits:
    704
  18. Tags
    Summary

    (Y/N) (L/N) was once an icon; an absolute icon to the masses. But destroyed out of jealousy, she is given a new chance with a brand new power and is thrown right smack dab in the pre-main plot of Undertale, where everything hasn't gone to shit yet from Frisk's meddling.

    And she'll be damned to let these poor souls rot beneath ground, not when she has the power to stop it.

    And dammit all, she WILL persevere and achieve her goal!

    ...

    Now if only she wasn't so damn attached to Flowey.

    Series
    Language:
    English
    Words:
    69,114
    Chapters:
    20/?
    Comments:
    278
    Kudos:
    685
    Bookmarks:
    155
    Hits:
    9480
  19. Tags
    Summary

    Nao’s frown slowly shifts into a smile, though there’s something saccharine about it. Sweet with a bitter aftertaste. It lingered on the back of Sara’s tongue.

    “I’m glad that it’s you and me, Sara.”

    -

    Sara and Nao enjoying a nice meal together.

    Language:
    English
    Words:
    528
    Chapters:
    1/1
    Comments:
    6
    Kudos:
    23
    Bookmarks:
    1
    Hits:
    95
  20. Tags
    Summary

    (This is a prelude to my (second) SAVE Asriel fic, based on a theory from the Undertale lab youtube channel that Asriel was lying at the end of Undertale about turning back into a flower.)

    After the barrier is destroyed and the Underground goes empty, Asriel sits alone in the depths, hoping for the best. Unfortunately, Chara just can't allow him even a moment of respite.

    Language:
    English
    Words:
    925
    Chapters:
    1/1
    Kudos:
    3
    Hits:
    62

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