1 - 20 of 152 Works in Post-Undertale Genocide Route

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  1. Tags
    Summary

    After being freed from the Underground, monsters became 'bitties' as humans called them.
    Small, unable to protect themselves properly, monsters had no choice but to entrust care for them to humans,
    that were guided by toriel and asgore, always alongside frisk to ensure everything went smoothly.

    But being stuck in a bittycenter (as the carecenters for them were called) all the time became worse for him, when Sans' brother
    Papyrus left him.

    A decision made on a whim to be able to leave the center turns into quite a tedious, degrading episode, because the normally observant skeleton
    was running out of excuses and couldn't be bothered to try harder.
    His quick escape plan ends in him desperately hoping for help only to get his wish at the end.
    But as the saying goes 'be careful what you wish for'.

    Series
    Language:
    English
    Words:
    2,299
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    6
    Bookmarks:
    4
    Hits:
    75
  2. Tags
    Summary

    It's so funny, you can't stop laughing. Everything you ever do just falls apart, and its SO FUNNY.
    Ha ha...
    But that's not the truth.
    Because you've been gone for a long time, haven't you?

    Language:
    English
    Words:
    12,010
    Chapters:
    29/?
    Comments:
    135
    Kudos:
    86
    Bookmarks:
    6
    Hits:
    1774
  3. Tags
    Summary

    Her parents used to go to a campsite all the time when they were kids, but as they grew up, they never found time to go back. Now that they've had a kid and she's grown enough to take care of herself, her parents decided it was time to situate themselves back into the campground, citing their own youthful adventures to their 18-year-old daughter as a reason for their 3-month visit.

    With this in mind, Constance fully expected her summer to be boring, planning accordingly with the things she packed. She did /not/ expect to find herself smitten with the most popular boy at the site, and most certainly never would've guessed that he would eventually return the affection. After a few weeks of flirty passes and a few longing touches, he eventually offers to take her to a place she'll be the first to visit.

    Of course, she goes -- she's young, not stupid.

    Expecting a day of adventure in a nearby town, they instead end up at a cabin in the woods. It was all looking like a perfect romance novel until it took a very horrific turn.

    Will Connie survive these monsters long enough to escape the forest?

    Series
    Language:
    English
    Words:
    4,851
    Chapters:
    2/?
    Kudos:
    4
    Bookmarks:
    2
    Hits:
    58
  4. Tags
    Summary

    Frisk, the final human, has finally fallen into the Underground, her soul ripe for the taking, or so they’d thought. When this human begins committing genocide throughout the Underground, many monsters stand up to fight against her, including a small monster named MK, who gets himself into more trouble than he had anticipated.

    Language:
    English
    Words:
    5,128
    Chapters:
    3/?
    Comments:
    3
    Kudos:
    7
    Hits:
    52
  5. Tags
    Summary

    bad memories caused bad things.

    Language:
    中文
    Words:
    1,533
    Chapters:
    1/1
    Kudos:
    3
    Hits:
    224
  6. Tags
    Summary

    Everything was going fine until the machine exploded. Well, as fine as it could be with everyone dead, anyway. For Sans, it just keeps getting better. Slim never saw it coming.

    Deep in the Void, the man who speaks in hands meets a monster who sees without eyes.

    Language:
    English
    Words:
    18,256
    Chapters:
    7/?
    Comments:
    48
    Kudos:
    29
    Bookmarks:
    2
    Hits:
    513
  7. Tags
    Summary

    What happens when a flashy young skeleton meets a girl who just doesn't care about anyone or anything and is terrible at friendship?

    Language:
    English
    Words:
    2,459
    Chapters:
    3/45
    Comments:
    8
    Kudos:
    33
    Bookmarks:
    3
    Hits:
    321
  8. Tags
    Summary

    Edge and Sans' first meeting does not go well.

    Series
    Language:
    English
    Words:
    21,436
    Chapters:
    6/?
    Comments:
    123
    Kudos:
    195
    Bookmarks:
    34
    Hits:
    2373
  9. Tags
    Summary

    After the loss of her beloved bitty, detective Penny didn't expect to find another bitty partner so soon. Together, they struggle to solve the case that had led to her previous partner's untimely death. Though they may make a couple extra friends and enemies along the way...

    Language:
    English
    Words:
    11,168
    Chapters:
    3/12
    Comments:
    3
    Kudos:
    19
    Bookmarks:
    8
    Hits:
    138
  10. Tags
    Summary

    (REVAMPED) It's been one week since you freed the monsters after Chara gave you a second chance to right your wrongs. Since then they have left you to live your life. Everything was perfect until Sans driven insane by the thousands of resets you and Chara had made took your soul. You are somehow saved by a demon named Ennard who you make a deal with to get your revenge on Sans.

    Series
    Language:
    English
    Words:
    2,702
    Chapters:
    6/?
    Comments:
    25
    Kudos:
    16
    Bookmarks:
    5
    Hits:
    579
  11. Tags
    Summary

    Frisk's got a secret.

    Language:
    English
    Words:
    605
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    34
    Bookmarks:
    1
    Hits:
    218
  12. Tags
    Summary

    Armageddon. Apocalypse. Doomsday. The End.

    But this was not the end. No, your story wasn’t finished yet. Especially now with all these monsters around.
    ~

    An Undertale AU that takes place Post-Pacifist, where the surface is consumed by the Zombie Apocalypse and you (The Reader) is thrown into an unexpected journey with the most unexpected alliance. Multiple POV, Female Reader, Blood, Gore and Violence. This Fic contains multiple ships, but the main one is Sans/Reader. Rating is M for now, but may change to Explicit due to sexual content later.

    For more summary, view the prologue.

    Language:
    English
    Words:
    27,773
    Chapters:
    8/?
    Comments:
    103
    Kudos:
    453
    Bookmarks:
    67
    Hits:
    5297
  13. Tags
    Summary

    My definitive Undertale fanfiction. A story about a ghostly Chara getting a journal - and then getting caught up in a multi-timeline expedition after characters swap places between universes, the result of a particular timeline gone haywire. Has 1st Person POV in diary and narrative segments from multiple characters. Rated Teen and Up for violence and depression. Updates on Saturdays.

    Language:
    English
    Words:
    5,080
    Chapters:
    3/?
    Comments:
    1
    Kudos:
    5
    Hits:
    115
  14. Tags
    Summary

    How, then, does one define a ‘soul’? Is it developed over one’s lifetime or the moment they are born? Are some naturally evil, rotten from their very core, or is such a thing learned? Does it have something to do with genetics? A difference between blood and magic?

    How do people grasp the idea of what makes them themselves when such an idea is easily discarded?

    OR -- the AU in which a monster absorbs a human soul and the consequences that come from messing with the continuity of the multiverse.

    (ANOMALYTALE is a mix of previous ideas/AU's ive messed around with over the years, including my old & abandoned au, devastationtale. some chapters may be unsuited for certain people, so please make sure to read tags/warnings before you read! hope you enjoy!)

    Act One: Sunrise - Ch. 1 - Ch. 7
    Act Two: Times of Peace - Ch. 8 - ?
    Act Three: Times of War - ?
    Act Four: Sunset - ?

    Language:
    English
    Words:
    24,119
    Chapters:
    9/41
    Comments:
    18
    Kudos:
    32
    Bookmarks:
    6
    Hits:
    692
  15. Tags
    Summary

    After a Genocide route, Sans completely ignores his promise and tortures Frisk.

    Series
    Language:
    English
    Words:
    762
    Chapters:
    2/?
    Comments:
    11
    Kudos:
    14
    Bookmarks:
    2
    Hits:
    933
  16. Tags
    Summary

    Alanna isn't one to listen to superstitious warnings; so it is unequivocally her fault that she fell into the bowels of Mt. Ebbot. Will she be able to untangle the complicated mess that Frisk, who is not exactly what they seem, has left behind to give the Underground the happy ending it deserves? And what is this darkness that's spreading into their world? Will a simple pacifist route do?
    Officially the Interfusiontale AU.

    Language:
    English
    Words:
    24,870
    Chapters:
    15/?
    Comments:
    5
    Kudos:
    13
    Hits:
    161
  17. Tags
    Summary

    Their mouth doesn't have any petals in it this time so they grasp the opportunity with fingers matted with a disgusting mix of dust and blood and just laugh to their heart's content like a fucking psychopath- a demon like their mother pegged them for.

     

    Language:
    English
    Words:
    2,764
    Chapters:
    4/?
    Comments:
    25
    Kudos:
    29
    Bookmarks:
    2
    Hits:
    375
  18. Tags
    Summary

    This is about many (but not too many like in HOSB) Sans and Papyrus's taking care of an abused toddler and the antics that follow!

    Language:
    English
    Words:
    2,902
    Chapters:
    2/?
    Comments:
    25
    Kudos:
    129
    Bookmarks:
    21
    Hits:
    1127
  19. Tags
    Summary

    Sometimes, when Frisk dreams, they dream of a little house in a dark, cavernous pit.

    On rare occasions, they can enter the house, and, on even rarer ones, they run into some of it's inhabitants.

    Or:

    The ghosts that aren't actually ghosts are antisocial misfits who just want some new friends

    Series
    Language:
    English
    Words:
    1,937
    Chapters:
    1/1
    Kudos:
    13
    Bookmarks:
    1
    Hits:
    125
  20. Tags
    Summary

    The Player is confronted by the person they hurt the most.

    Language:
    English
    Words:
    1,311
    Chapters:
    2/2
    Comments:
    6
    Kudos:
    20
    Bookmarks:
    1
    Hits:
    250

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