1 - 20 of 38087 Works in Undertale (Video Game)

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  1. Tags
    Summary

    A human fell into the underground, with his brother falling shortly after.

    Kayden, his brother, had a dual-tone soul: it was blue and green, which he knew was not normal for humans.

    Devon, who had fallen before his brother, decided to kill everyone he could find- reset, and then do it again.

    It took a few resets for Kayden to realize what was happening.

    At one reset, finally, The royal scientist, Alphys, managed to stop Devon from continuing this.

    Language:
    English
    Words:
    639
    Chapters:
    2/?
    Hits:
    5
  2. Tags
    Summary

    Things were going great for the undertale bros and their alternate selves until the machine started up.
    Why did 2 familiar looking humans come out of the machine?

    Language:
    English
    Words:
    224
    Chapters:
    1/?
    Hits:
    0
  3. Tags
    Summary

    “Long ago, two races ruled over Earth: Humans and Monsters. One day, war broke out between the two races… After a long battle, monsters were victorious.”

    They say a human child will rise to the surface and free them all.

    Seven years ago, the first human discovered they could push through the magical spell monsters placed to keep humans sealed underground. They never returned. Every year after, a human child was chosen to go up and try to make peace with the monsters. No one has ever returned. No one has freed them.

    No savior has risen.

    Language:
    English
    Words:
    35,435
    Chapters:
    9/?
    Comments:
    39
    Kudos:
    38
    Bookmarks:
    3
    Hits:
    444
  4. Tags
    Summary

    Just the story of a lonely flower whose determination to feel brought a miracle upon him.
    Is it really such a crime wanting to be loved?

    (Based on the song Guardian of Loneliness/孤独の番人 by SCL Project)

    (CW: this is a story with a yandere-like character, there will be themes of violence, toxic relationships, manipulation, etc. as well as themes of depression and self-loathing. Read tags for further information.)

    Language:
    English
    Words:
    1,631
    Chapters:
    1/?
    Hits:
    0
  5. Tags
    Summary

    Monsters have been on the surface for years, but they've only just expanded their horizons enough to make it to Long Island.
    You work in manufacturing, keeping mostly to yourself outside of work, but now your job has just hired some new monster employees and you get to train some of them!

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Hi all! This is my first fanfiction and I've really just jumped into the deep end here... As of now, there is no set update schedule for this fic, but that may change in the future.
    Enjoy!~

    Language:
    English
    Words:
    79,575
    Chapters:
    15/?
    Comments:
    110
    Kudos:
    270
    Bookmarks:
    75
    Hits:
    5245
  6. Tags
    Summary

    Sans just wanted to work his way up through the ranks of biologists--maybe win a Nobel, wouldn't that be neat--and make sure his kid brother can do whatever he wants with his life. Too bad that all of that goes out the window when one late night in the lab and an unfortunate amount of curiosity leads him to discover that his boss is making tiny monsters to use as lab specimens. Now Sans and his brother are on the run from both CORE labs and the monster mob with four snarky lab specimens that look just like him and have superpowers somehow?

    In the vein of Catistta's 100 Daily Drabble works, this is a story that is told (a maximum of) 250 words at a time and is updated daily. It's best enjoyed in full work mode.

    Language:
    English
    Words:
    25,608
    Chapters:
    104/?
    Comments:
    842
    Kudos:
    197
    Bookmarks:
    21
    Hits:
    3978
  7. Tags
    Summary

    Various comment threads that helped to shape In Which We Give This Empty Can Some Motherly Instincts And Not Yeet Him. Not all concepts were used and some were scrapped. Has a lot of error and ink relationship stuff and Ink kids being gremilns.

    Series
    Language:
    English
    Words:
    20,566
    Chapters:
    3/?
    Comments:
    28
    Kudos:
    9
    Bookmarks:
    3
    Hits:
    54
  8. Tags
    Summary

    "Claus yelped, clutching his face as the mechanical part of his brain began screaming 'wrong wrong wrong' something was wrong. Lucas quickly went to his brother's side, not caring about the body on the floor, and clutched Claus's shoulders tightly.

    'The nightmare-" Claus choked out. "It's here, it's him, it's-'"

    Three people. Broken by time. Harden by grief. Strengthened by love... And LOVE.

    Join together to escape their mind. To seek redemption. To unite and save the world.

    Series
    Language:
    English
    Words:
    10,777
    Chapters:
    4/?
    Comments:
    4
    Kudos:
    11
    Bookmarks:
    2
    Hits:
    282
  9. Tags
    Summary

    All of these drabbles have been or will be posted on Twitter under @LunTurney. Any art is by me unless said so

    These may seem short due to originally being posted on Discord. As such, the character limit stopped me from going too far. These are all posted nearly exactly as posted on Discord/Twitter other than some typos or grammatical errors fixed

    Series
    Language:
    English
    Words:
    8,433
    Chapters:
    23/?
    Comments:
    40
    Kudos:
    266
    Bookmarks:
    32
    Hits:
    3673
  10. Tags
    Summary

    The dichotomy between black and white is your constant when it's time for you to meet the whole new civilization Frisk brought along with them to the Surface.

    As a parent, it's not easy to trust others when they've hurt your child.

    So when that new civilization decides they owe Frisk both for saving their kind and for still hurting them during that process, you've got plenty to say to them.

    Forgive the monsters as easily as you once did with others during a stage of naivety?

    Oh, hell no.

    They better have a good reason for hurting your child and an even better one for wanting to be a part of their family.

     

    • • •

     

    Full Arc List:

    Arc 1 | Ruins

    Chapters 1 to 15 (× current)

    Arc 2 | Enemy Approaching

    Chapters 16 to 25

    Arc 3 | Pathetic House

    Chapters 26 to 30

    Arc 4 | Spear of Justice

    Chapters 31 to 40

    Arc 5 | Here We Are

    Chapters 41 to 50

    Arc 5.5/Final Arc | Good Night

    Chapters 51 to 55

    Language:
    English
    Words:
    77,340
    Chapters:
    29/?
    Comments:
    134
    Kudos:
    164
    Bookmarks:
    31
    Hits:
    3750
  11. Tags
    Summary

    Empathy.

     

    It's something YOU don't have.

    Language:
    English
    Words:
    925
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    16
  12. Tags
    Summary

    Just a challenge from Tumblr, may or may not have a continuation of this.

    Language:
    English
    Words:
    2,040
    Chapters:
    4/7
    Kudos:
    23
    Bookmarks:
    3
    Hits:
    152
  13. Tags
    Summary

    george finally has to come to terms with his own mortality. the people around him are crumbling and he is still learning about his self. this is a tale of love, tragedy, fate, and also the rapture. HOPE YOU ENJOY!!

     

    this is my first fic pls dont roast

    Language:
    English
    Words:
    2,188
    Chapters:
    4/?
    Comments:
    23
    Kudos:
    22
    Bookmarks:
    8
    Hits:
    794
  14. Tags
    Summary

    The Wizard's been through many odd things in his life. . But nothing like this. On an island in the middle of nowhere, he and 15 other characters from across the world are placed in a killing game of life and death, hosted by a mysterious man hosting this as a reality television show. . Will they escape this nightmare, or will they fall victim to the throes of the killing game?

    Community Discord: https://discord.gg/uXyjSMTyNY

    Killing Game Progress: Prologue End.

    Language:
    English
    Words:
    8,439
    Chapters:
    1/30
    Comments:
    1
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    29
  15. Tags
    Summary

    Error is living on the streets...and it's not by choice.

    Why does everyone seem to hate him?

    Language:
    English
    Words:
    5,510
    Chapters:
    4/?
    Comments:
    29
    Kudos:
    31
    Bookmarks:
    5
    Hits:
    232
  16. Tags
    Summary

    You were so happy when your favorite elder sister invited you to stay with her, you are very nervous to be staying with many people but you'll try to manage

    Series
    Language:
    English
    Words:
    9,398
    Chapters:
    11/?
    Comments:
    106
    Kudos:
    109
    Bookmarks:
    29
    Hits:
    2764
  17. Tags
    Summary

    Sans is everything.

    Sans is nothing.

    Sans is day.

    Sans is night.

    Sans is himself.

    Language:
    English
    Words:
    645
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    8
  18. Tags
    Summary

    Long ago, two races ruled over Earth,
    Humans and Monsters.

    One day an Uno War took place
    between the two races.

    After a long battle the Monsters
    were victorious.

    The Humans, filled with anger, YeEteD the Monsters under a mountain.

    Seven of the strongest meme creators dabbed, creating a barrier, trapping the Monsters underground.

    Many Years Later. . .

    Legends say that all who climb Mt. Ebott go missing and are then labeled as “Gay”.

    A human climbs the mountain.

    They enter a cave.

    They trip and fall into a giant hole.

    The human then dabs as they fall
    to their “death”.

    .
    .
    .

    A human with brown hair is lying in a bed of yellow flowers. They look around them and notice they are underground.
    They have fallen in “The Land of Monsters”. Their response?
    “Nani the frick?”

    (Co-writing with a friend that doesn’t have an AO3 account)

    Language:
    English
    Words:
    8,238
    Chapters:
    4/?
    Comments:
    4
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    31
  19. Tags
    Summary

    Sans lives on the Surface, free and happy for the first time since he can remember. And then he starts seeing another monster who looks strangely like him, in mirrors and in dreams. When he ends up in a darker version of the Underground, Sans must find a way back home – all while trying to keep messy things like feelings out of the equation.

    Written in the style of Catsitta’s 100 Daily Drabbles, with no more than 250 words in a chapter. Best read in Entire Work mode.

    Language:
    English
    Words:
    2,011
    Chapters:
    17/?
    Comments:
    185
    Kudos:
    69
    Bookmarks:
    7
    Hits:
    654
  20. Tags
    Summary

    When you decide to pursue your childhood dream of running an arcade, the developing monster city at the top of Mount Ebott seems like an obvious choice to set up shop. The community is growing quickly, you'd have very little competition, and commercial renting space is dirt cheap.

    The only problem is you've never run a business by yourself before, and you're not very good with numbers. When you find a monster accountant advertising his services online, you jump at the chance to work with him.

    The skeleton seems formal, professional, and detached, which is just fine by you. Who needs the distractions of friendships and relationships when you've got a business to run?

    Language:
    English
    Words:
    32,689
    Chapters:
    13/?
    Comments:
    152
    Kudos:
    321
    Bookmarks:
    61
    Hits:
    3485

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