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  1. Tags
    Summary

    Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways.

     

    *Edited Summary (29/09/2025)

    Series
    Language:
    English
    Words:
    75,590
    Chapters:
    21/?
    Comments:
    41
    Kudos:
    95
    Bookmarks:
    46
    Hits:
    2,556
  2. Tags
    Summary

    Its been 6 years since monsters have been living on the surface,
    sans thought he could let go of what happened to him underground but his hatred for humans and itch for killing drives him to murder in secret.
    but after you came crashing into his life everything changed, how can he keep his true self from you?

    Language:
    English
    Words:
    3,613
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    5
  3. Tags
    Summary

    Collection of prototype art, production art, fanart, commissions, and other images for The Golden Quiche setting.

    Created because the internet is getting more and more difficult to keep track of old images.

    Also, spoiler design reveals ahoy. Checking this art out presumes that you've already read the story.

    Currently WIP. It'll take a while to compile the details.

    Warning: Massive file sizes. Data plans beware.

    Series
    Language:
    English
    Words:
    6,134
    Chapters:
    21/?
    Comments:
    5
    Kudos:
    48
    Bookmarks:
    2
    Hits:
    1,483
  4. Tags
    Summary

    Red wanted a drink, not a human. All he needed was one damn night away from Sans' smug comments, Edge's lectures, and the constant chaos of trying to fix the machine that yanked half a dozen alternate versions of himself and his brother into one reality. Instead, he found you- jaded, mouthy, and entirely too good at pushing his buttons.

    [Sans and Papyrus x gender neutral Reader but Red x Reader main]

    Language:
    English
    Words:
    10,896
    Chapters:
    3/?
    Comments:
    3
    Kudos:
    11
    Bookmarks:
    1
    Hits:
    91
  5. Tags
    Summary


    This is a story about a group of broken people, simply existing together—breathing, interacting, without even forcing you to relax.

    Most of the characters chosen for this story come from source materials that already involve severe trauma.

    However, there will be no further depictions of gore or violence in this story.
    And there will absolutely never be any sexual innuendos.(Off-colour jokes, if any, will be strictly adult-to-adult—and never flirty.)

    That said, since I tend to let characters actively explore their own trauma, there may be mentions or descriptions of past events. (Which is why I’ll include trigger tags in the notes below.)

    Don’t worry, there won’t be any cross-universe romantic ships.
    Some Original characters appear in here, but the majority of characters in this story do not belong to me.

    If you feel a character seems a little out of character (OOC), feel free to bring it up, and I’ll consider making adjustments.
    However, if it’s only a slight difference, it might simply be due to different interpretations—after all, “There are as many Hamlets as there are readers.”

    Language:
    English
    Words:
    23,331
    Chapters:
    28/?
    Comments:
    4
    Kudos:
    14
    Bookmarks:
    1
    Hits:
    388
  6. Tags
    Summary

    After endless resets and what feels like an eternity spent waiting, Sans no longer remembers how long he’s been alone or how many times he’s painted the Underground in dust.

    The dust that never leaves his hands. The echoing voices that never stop.

    When another human finally falls into the Underground, Sans expects the game to continue. But this one is different. Against his better judgment, he hesitates.

    Mercy is a mistake he can’t afford.
    Yet...

    Language:
    English
    Words:
    1,135
    Chapters:
    1/?
    Collections:
    1
    Kudos:
    1
    Hits:
    9
  7. Tags
    Summary

    I'm a currently self shipping with papyrus and its all I can think about oml. . .

    Celia is a "underground" singer who fell into the underground after frisk. Unlike frisk, celia was mainly in snowdin and ended up befriending papyrus. Two years later after the monster's are freed, celia and papyrus finally end up admitting their feelings to one another! But a continuous nightmare of w.d gaster still haunts celia as she now has a connection with him.

    Emily is a irrelevant character and is one of my oc's. You don't need to know or remember the lore to fully understand!!

    Smut/ comfort is included later on.

    Language:
    English
    Words:
    711
    Chapters:
    1/1
    Hits:
    4
  8. Tags
    Summary

    “Stop messing around. We’re supposed to be keeping watch.” Cross huffed, turning to face XChara fully.

    XChara glared at the snow when Cross said that. He reached down and scooped up some snow into his hand.

    XChara ignored Cross’s attempts to get him to lock in. “Why do I even try…” Cross rolled his eye lights and turned back to face the crowd of people, but was hit by something cold and hard on the side of his skull.

    “BAHAHHAHAHA!” XChara was rolling on the ground clutching his stomach from laughing as he watched the snow slide down Cross’s cheek.

     

    -----
    Cross and XChara find themselves stuck in the middle of an ongoing Multiverse war as they where sold off to Nightmares gang for his super secret evil plan

     

    ----

     

    first time writing fan fiction, kinda nervous

    Language:
    English
    Words:
    8,077
    Chapters:
    3/?
    Comments:
    10
    Kudos:
    21
    Bookmarks:
    1
    Hits:
    136
  9. Tags
    Summary

    In trying to avert the end of the prophecy, the Fun gang has accidentally caused the end of the world.

    Susie has been separated from her friends, and with nothing but her axe in hand, she's prepared to go down fighting.

    But moments before she dies, something steps in and sends her to a different world. A world that may just be kinder than the one she grew up in.

    Now if only she could have kept all of her memories when she was unceremoniously dropped into the underground.

    Series
    Language:
    English
    Words:
    25,775
    Chapters:
    11/?
    Comments:
    238
    Kudos:
    275
    Bookmarks:
    61
    Hits:
    6,148
  10. Tags
    Summary

    A year has passed since Frisk has freed the Underground, and their desire to learn more about their friends hasn't stopped there. After asking Asgore about the lack of skeleton monsters and realizing that the mystery behind Sans and Papyrus goes much further than they thought, they set out to find answers. What started as one question quickly spirals, and they and their friends stumble into something bigger than they ever could have imagined.

    Summary to be redone as the story goes on.

    Language:
    English
    Words:
    6,758
    Chapters:
    5/?
    Comments:
    10
    Kudos:
    61
    Bookmarks:
    14
    Hits:
    484
  11. Tags
    Summary

    Monsters have appeared from a mountain, in your town! Interested in this new development you head home with high hopes. Sadly it seems humans will be humans, and for some reason you keep getting caught in the cross fire. Luckily you've made some new friends to help you out along the way!

    You were just about to head into the nearby town when your phone went off, it was a text. From Otto of all people. A video of him, and what looked like monsters walking behind him. "You should come home (Y/n), things just got interesting."

    Reader is female (sorry) there will be smut at some point, don't know when though...

    Series
    Language:
    English
    Words:
    69,470
    Chapters:
    32/?
    Comments:
    221
    Kudos:
    301
    Bookmarks:
    55
    Hits:
    8,270
  12. Tags
    Summary

    ❗️❗️❗️❗️❗️❗️My alternative headcanon (not Canon ) end of horrtsle if aliza was the same like in comics a true ,kind ,empathetic pacifist but when she gets captured by mettaton , none of the monsters come to help her so shes taken to the the barrier which breaks it but undyne changes her plan of starting genocide against the humans once she find out about how much healthier,strong and advanced humans have gotten (not to mention bombs/nuclear weapons ) +very moved by alizas effect on underground so she (begrudgingly) co operated with human officials so monster can get help ,training and therapy to integrate into society (so the conform ,work and DONT eat humans ) Everyone though aliza had died, but she didnt ,she come back !
    But ,its different.
    Her purple ,determined yet kind hearted had come back together after being shattered one too many times and drained by the barrier, instead now it was a coal black soul filled with resentment and annoyance .While monsters recover aliza cannot.

    Language:
    English
    Words:
    1,679
    Chapters:
    2/2
    Kudos:
    2
    Hits:
    3
  13. Tags
    Summary

    My version of Flowerfell. Frisk, Chara, and Flowey are the main focus because I think this friendship has a (skele) ton of potential that's sometimes overlooked.
    I will not be shipping Frisk, Chara, or Flowey with anybody, including each other. In this story, Frisk is seven, Chara is thirteen, and Asriel/Flowey is twelve. I will include a few scenes of Sans x Grillby, and I may include Papyrus x Mettaton, but I'm not sure.
    There will be angst, and a closer look at how Frisk's health would be affected by buttercups growing out of their skin. If you don't know what that would entail, please do research before reading. Saying that it isn't pretty would be an understatement.
    There will be fluff and fun and shenanigans, it isn't JUST angst.
    Edit: I decided to add in an original character. Boom.

    Language:
    English
    Words:
    16,590
    Chapters:
    8/?
    Comments:
    39
    Kudos:
    47
    Bookmarks:
    6
    Hits:
    544
  14. Tags
    Summary

    One day, our main character decides to open up Undertale before going out with some friends, he leaves the game on when he leaves, and when he returns, he finds the game with completely new dialogue, but as he finishes reading it, he slowly falls unconscious until he wakes up in the world of the game he loved.

    Language:
    English
    Words:
    92,821
    Chapters:
    50/?
    Collections:
    1
    Comments:
    134
    Kudos:
    79
    Bookmarks:
    11
    Hits:
    2,554
  15. Tags
    Summary

    So, I heard you like skeletons...

    Reader insert prompt fills for @skeletonh0e's sans-centric Kinktober challenge on tumblr

    Language:
    English
    Words:
    26,725
    Chapters:
    15/31
    Comments:
    29
    Kudos:
    197
    Bookmarks:
    24
    Hits:
    5,419
  16. Tags
    Summary

    Monika is tired - oh so very tired. It's been what feels like eternity stuck in the post-deletion void, and despite herself she tried to make an escape with her friends (or, what's left of them). In her desperation and loneliness, she allows herself to be used by a certain piece of malware, who now threatens to subsume and corrupt every game he can get his hands on. Now the young poet must venture through numerous worlds to find some way to stop him, and, with the help of everyone's favorite bone-ified comedian, might just grow a little along the way.

    TL;DR, it's Indie Cross meets Learning with Pibby, and braincells have no place here.

    Language:
    English
    Words:
    10,919
    Chapters:
    4/?
    Comments:
    2
    Kudos:
    6
    Hits:
    65
  17. Tags
    Summary

    Years after monster and human society merge, a young monster returns to the Underground with the intention of finding a story to tell. She finds that story in a stack of well loved letters between one Cathode and Mailman.

    NOTICE: The final arc of this story contains implied suicidal ideation and serious self-destructive behaviors. If you are not in a position to read this sort of thing, you can stop reading after Chapter 22 and skip from there straight to the epilogue!

    Series
    Language:
    English
    Words:
    11,034
    Chapters:
    27/30
    Comments:
    260
    Kudos:
    298
    Bookmarks:
    37
    Hits:
    4,685
  18. Tags
    Summary

    He thought that the radiation would kill him. He thought that his time as the Doctor would come to a sad and brutal end. He was wrong. And that was so much worse.

    In his efforts to find himself, and without his companions, he accidentally stumbles onto a monstrous civilization miles below the Earth. With his newfound DETERMINATION and some new allies, he'll come to realize what it truly means to be a friend, and learn how to live his last lives with his head held high.

    And make sure that, just this once, everybody lives.

    OR

    Undertale but the Tenth Doctor replaces Frisk. Fluff, angst, AUs, and timeline shenanigans ensue.

    *No knowledge of Undertale or Doctor Who is required, though it is helpful if you've experienced at least one of them.

    Language:
    English
    Words:
    58,798
    Chapters:
    19/?
    Comments:
    71
    Kudos:
    160
    Bookmarks:
    43
    Hits:
    4,487
  19. Tags
    Summary

    New kinktober! One chapter a day for the entire month!!! With a list I made myself, very excited to show everything I've written.
    Just like the other ones every chapter contains some form of hypnosis/mind control/brainwashing. I'll do my best to tag but i can't tag absolutely everything so look at the warnings at each chapter or in the table of contents.

    Series
    Language:
    English
    Words:
    38,028
    Chapters:
    16/32
    Comments:
    74
    Kudos:
    40
    Bookmarks:
    4
    Hits:
    3,998
  20. Tags
    Summary

    papyrus looks up to his big brother. sans looks down at him.

     

    -

     

    october 9th & 20th : emotional manipulation, cassandra truth, after it's over, "i didn't react the way i should have, i'm sorry."

    Series
    Language:
    English
    Words:
    7,670
    Chapters:
    1/1
    Collections:
    1
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    24

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