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  1. Tags
    Summary

    This is a story I've been meaning to write for many months, it all came down to the OC's name. I really hope you guys enjoy, I worked hard on this!
    Underfell belongs to the AU community, my OC Ally belongs to me.

    Language:
    English
    Words:
    46,574
    Chapters:
    11/?
    Comments:
    2
    Kudos:
    25
    Bookmarks:
    4
    Hits:
    275
  2. Tags
    Summary

    Randomness involving an OC (or you, the reader, if you prefer) who is living with the Swapfell skelebros. I made this series of sort of one-shots because I tend to think of 'what could happen differently' as I'm reading other works and just because I wanted a way to insert a character into random situations I thought of.

    Not a great summary, but how do you summarize a bunch of one-shots anyways? So, hopefully you'll give this random little series a try and maybe even enjoy it!

    Language:
    English
    Words:
    54,128
    Chapters:
    24/?
    Comments:
    120
    Kudos:
    39
    Bookmarks:
    4
    Hits:
    658
  3. Tags
    Summary

    (Inspired by the world and A.U’s of UNDERTALE.)

    God knows how old Oliver is or where he’s supposed to be from (a crappy Si-Fi romance novel according to both of the souls he knows), but his only friend Jenny- from the planet known as Earth- is merely 12. So of course she didn’t expect to have him floating around causing such messes, but then again, she didn’t think of much other than avoiding ‘some idiotic jerks that have no respect for her or this community’ and how to avoid ripping her favorite lavender dress.
    Updates are planned for every Friday, but more than 1 chapter will more than likely be uploaded a week.

    Series
    Language:
    English
    Words:
    3,950
    Chapters:
    5/?
    Kudos:
    2
    Hits:
    24
  4. Tags
    Summary

    many know of the final fallen child Frisk, but what happens when Frisk resets the time line and their sister is finally with them? How will this change the time lines?

    Language:
    English
    Words:
    2,488
    Chapters:
    3/?
    Comments:
    1
    Kudos:
    6
    Bookmarks:
    1
    Hits:
    108
  5. Tags
    Summary

    The monsters wonder why they thought humanity could have changed, why they believed a small child's words that their species were not the same evil creatures that they had been thousands of years ago. Why they allowed themselves to hope. As they are torn from loved ones- from family- thats all they can ask themselves. Why.

    -----

    You are a nobody, a small-town waitress just trying to get by. You don't expect anything to ever happen to you. But one day you find a man living in a cardboard box behind your diner. No, not a man, a monster. And this monster doesn't have a collar. What's a girl to do?

    Series
    Language:
    English
    Words:
    45,463
    Chapters:
    14/?
    Comments:
    122
    Kudos:
    251
    Bookmarks:
    38
    Hits:
    2631
  6. Tags
    Summary

    What if all the monsters we got to know still spent their childhood on the surface, before the war happened? What if Sans used to be really fucking edgy as a 15 year old teenager? What if he managed to get chummy with a group of bad-boys that aren't exactly the best influence on him?
    What if I were actually good at writing summaries?

    Updates every Friday/Saturday (depending on your timezone)
    Number of smut chapters: 8

    Series
    Language:
    English
    Words:
    376,186
    Chapters:
    118/?
    Comments:
    1670
    Kudos:
    1124
    Bookmarks:
    62
    Hits:
    22035
  7. Tags
    Language:
    English
    Words:
    8,279
    Chapters:
    2/2
    Comments:
    2
    Kudos:
    2
    Hits:
    59
  8. Tags
    Summary

    Sans didn't expect to find the door to the ruins open. He didn't expect to find a human corpse, piles of dust, and a lone living human baby inside. He sure has hell didn't expect ending up taking care of it. What does he know about babies, anyway?

    But a promise is a promise and this one has to be kept.

    No matter what.

    Language:
    English
    Words:
    29,261
    Chapters:
    6/?
    Comments:
    114
    Kudos:
    268
    Bookmarks:
    50
    Hits:
    1927
  9. Tags
    Summary

    "We need to be strong. No one will mess with us if we're strong. I'm sorry but... I don't think there's any other way."

    As children, Sans and Papyrus made a promise to each other. A promise to protect each other, to stop each other from getting hurt. They never said it aloud, they never talked about it but it was also never far from their minds. Sometimes they could keep the promise, sometimes they couldn’t. They would try anyway.
    At times, things seemed almost okay...

    Then you came along.

    Series
    Language:
    English
    Words:
    11,301
    Chapters:
    8/?
    Comments:
    51
    Kudos:
    94
    Bookmarks:
    16
    Hits:
    1017
  10. Tags
    Summary

    It’s been a couple hundred years since the minister’s child was brought back, dead, in the arms of a monster. That was the story you were told while growing up in a village next to Mt. Ebott. You never took the ‘monster’ thing literally though, and neither did a couple of friends. One day, the five of you decide to go up to the very top of the mountain and put these silly legends that the elders told to rest. You were nearly successful except for the fact that you fell into Mt. Ebott…and discovered that the elders weren’t so crazy after all. You catch the attention of many monsters, including Grillby, Sans, and one Dr. Gaster – who just /has/ to ‘run some tests’ on you. It’s something about your blood. With the monsters so desperate to break the barrier, will you survive in the Underground?

    Language:
    English
    Words:
    21,152
    Chapters:
    8/?
    Comments:
    6
    Kudos:
    39
    Bookmarks:
    6
    Hits:
    333
  11. Tags
    Summary

    A mysterious feeling drags your twin Frisk towards Mount Ebott, with you not far behind.

    You find yourself trapped beneath the mountain, and are faced with a race of people long-forgotten by Humanity. Monsters. But, despite the name of their race, they aren't monstrous like you'd think they'd be with a name like that. You soon feel a need to free all those who are trapped, regardless of the trials they have given you. On top of all of this, your twin sibling Frisk seems to be troubled and holding secrets from you. Will you find a way to free those trapped Underground? Will you be able to free Frisk, and Yourself? Will you ever have the happiness of a family that you, and your sibling Frisk lost so long ago?

    Read, and find out where in this story you will go. -Updated twice weekly, usually weekdays-

    Language:
    English
    Words:
    23,819
    Chapters:
    8/?
    Comments:
    18
    Kudos:
    36
    Bookmarks:
    5
    Hits:
    383
  12. Tags
    Summary

    Hello, and welcome to the Undertale Multiverse Guide. I am your host, UG101! Here I will be compiling a list of various Undertale AU's and perhaps other information as well once those are done. If you have any AU's or other things to add, please leave them in the comments section of Chapter 1, or send in the information to my tumblr.

    Series
    Language:
    English
    Words:
    9,512
    Chapters:
    3/?
    Comments:
    2
    Kudos:
    2
    Bookmarks:
    1
    Hits:
    19
  13. Tags
    Summary

    Hey everyone!

    I recently opened up my Tumblr for some requests. I was thinking maybe I'd get 1 or 2... but I'm still working through them. So this would be a constant WIP.

    Beware the story with rape/non-con elements: Alphys/Gaster, Fellcest, the ErrorInk at Ch. 24, the Edgeberry in Ch. 28. Please avoid if triggered or uncomfortable.

    Anyways, enjoy and please tell me what you think.

    https://www.tumblr.com/blog/canadian-buckbeaver

    Language:
    English
    Words:
    40,868
    Chapters:
    36/?
    Comments:
    73
    Kudos:
    153
    Bookmarks:
    16
    Hits:
    3885
  14. Tags
    Summary

    Ten years have passed since the destruction of the barrier and human and monster relations have been going very well. After a shit-ton of resets, routes, and pain, everyone’s able to live their happy ending. Even me. The Players who made us go through that hell of a killing spree are gone. Asriel has his soul back, Mom and Dad are happy, Godfather and Frisk are okay and safe, and I’m alive again. We all have you to thank for that, Frisk. I hope we can have a chance at a new beginning for each other, but I’m worried that I will screw up everything and be hated and abandoned again. My name is Chara Dreemer and this is my story.

    Series
    Language:
    English
    Words:
    15,711
    Chapters:
    10/?
    Kudos:
    8
    Hits:
    197
  15. Tags
    Summary

    Sans and Papyrus, once known as subjects 001 - S and 002 – P, will always remember where they came from. The doctor and his lab still haunt their nightmares. But when everyone else starts to forget, will the man who made them take back his property?
    ((Sequel to Whispers in the Dark))

    Series
    Language:
    English
    Words:
    55,688
    Chapters:
    12/?
    Comments:
    52
    Kudos:
    248
    Bookmarks:
    40
    Hits:
    3577
  16. Tags
    Summary

    Papyrus is a marine biologist working at a Rehabilitation center for marine wildlife. The most exciting day of his career happens when a mermaid is brought in, injured and unconscious.

     

     

    my first time actually posting a multi-chaptered story, so uh, might not be the best but at least I tried??

    Language:
    English
    Words:
    25,923
    Chapters:
    14/?
    Comments:
    132
    Kudos:
    219
    Bookmarks:
    27
    Hits:
    2450
  17. Tags
    Summary

    Detective Sans Skeleton is fully aware of how dangerous Ebott City can be. Monsters and Humans have had a tense rivalry that goes back countless generations. It just takes one action, one death to tip the scales of peace and throw the city into complete chaos. With a mysterious killer stalking the neighborhoods, Sans is not only racing against time to save the life of his prime witness but to save himself from a murderer who will stop at nothing destroy everything.

    Language:
    English
    Words:
    9,122
    Chapters:
    4/14
    Comments:
    2
    Kudos:
    16
    Bookmarks:
    1
    Hits:
    293
  18. Tags
    Summary

    The children of the Blook family all had one thing in common—they were ghosts.

    In a metaphorical sense.

    Language:
    English
    Words:
    12,101
    Chapters:
    10/10
    Comments:
    16
    Kudos:
    71
    Bookmarks:
    9
    Hits:
    478
  19. Tags
    Summary

    Papi is tired of being treated like a delicate flower that needs protecting, so she asks Edge to teach her to fight.

    Series
    Language:
    English
    Words:
    3,171
    Chapters:
    4/4
    Kudos:
    6
    Hits:
    162
  20. Tags
    Summary

    A pup is tragically taken away from his mother to fend for himself for over 3 years, until a group a poachers attempt to capture hime, but instead is rescued by a group of scientist trying to save his species. He is placed with a timid female who is scarred from past experiences with other males. It is slow and rigid, but the two wolves start to fall in love with each other, forgetting the bad memories of the past. Will this love become something more? Will their bond be forever unbroken, or will a different force threaten to seperate them? Only time will tell. (Inspired by TheGreatRouge)

    Language:
    English
    Words:
    38,083
    Chapters:
    26/?
    Comments:
    26
    Kudos:
    156
    Bookmarks:
    13
    Hits:
    1980

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