1 - 20 of 15604 Works in Undertale (Video Game)

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  1. Tags
    Summary

    I've decided to open up a Fontcest roleplaying thing. I'll make a promt in the chapter, and we can rp in the comment section. Depending on how it turns out, I may publish it! Send a comment and depending on how you start the rp, I'll accept it and the sin shall begin!♪

    Language:
    English
    Words:
    720
    Chapters:
    24/?
    Comments:
    2835
    Kudos:
    26
    Bookmarks:
    3
    Hits:
    1932
  2. Tags
    Summary

    Reader makes new friends at the store while purchasing her groceries. Soon she will realized that her life will change extremely with some surprises, big and small.

    Series
    Language:
    English
    Words:
    323
    Chapters:
    1/?
    Hits:
    0
  3. Tags
    Summary

    US!Papyrus heads off for a week-long science convention with Undyne. Unfortunately, US!Sans goes into heat without Papy there to head it off before it sets in. UF!Sans decides to help the blueberry out.

    Series
    Language:
    English
    Words:
    9,442
    Chapters:
    3/3
    Comments:
    60
    Kudos:
    107
    Bookmarks:
    12
    Hits:
    1763
  4. Tags
    Summary

    A collection of requested one-shots or drabbles focused on the Skeles, but can include others!

    Requests are; OPEN

    Language:
    English
    Words:
    18,406
    Chapters:
    12/?
    Comments:
    103
    Kudos:
    96
    Bookmarks:
    13
    Hits:
    1376
  5. Tags
    Summary

    Compilation of Spicycinaroll fanfics

    NSFW will be applied to the Title of Chapter with appropriate warnings in the notes.

    Series
    Language:
    English
    Words:
    788
    Chapters:
    1/?
    Hits:
    1
  6. Tags
    Summary

    Compilation of Kustard fanfics

    NSFW will be applied to the Title of Chapter with appropriate warnings in the notes.

    Series
    Language:
    English
    Words:
    648
    Chapters:
    1/?
    Comments:
    1
    Hits:
    10
  7. Tags
    Summary

    Compilation of Fellcest and Fellbros fanfics

    NSFW will be applied to the Title of Chapter with appropriate warnings in the notes.

    Series
    Language:
    English
    Words:
    638
    Chapters:
    1/?
    Kudos:
    1
    Hits:
    16
  8. Tags
    Summary

    Frisk held within a cruel prison, experiences torture and sexual abuse, but soon after. Not completely broken. Chara, who appears within his desperate struggle for survival on the edges of life and death. Offering a deal, that comes with a heavy price.(Age 18 Frisk/male/Age 18 Chara/female with some futa parts.)

    Language:
    English
    Words:
    17,602
    Chapters:
    4/?
    Hits:
    4
  9. Tags
    Summary

    Princess Lavender has recently found he is betrothed to Prince jade. Thought neither of them
    are jumping with joy at the arrangement. In fact Lavender would much rather spend his days
    wandering around doing whatever he feels like, as he finds the customs of a kingdom weird, and
    spending time with his brother Rouge. Meanwhile Prince Jade seems uninterested which makes
    Lavender want to know why. How will they handle the unity of their kingdoms through a marriage
    that neither wants? Find out on a tale with a new twist on happily ever after, maybe not in a way
    you would expect.

    This story is based off of Crushing on’s stupid one shots. I would say that you should read theirs
    first to avoid confusion. It will be starting from where chapter 79 left off. They let me write is in my
    own general direction but they will also have their own. I hope you enjoy my rendition of this story.

    Language:
    English
    Words:
    3,758
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    5
    Bookmarks:
    2
    Hits:
    73
  10. Tags
    Summary

    Aiko is a human-monster hybrid who is found out by her human village and is sent to her death by falling down the hole in Mt. Ebott. When she awakes, she finds a world she could never imagine...
    -
    One monster who no one suspected would fall in love, finds the girl of his dreams..

    Language:
    English
    Words:
    3,622
    Chapters:
    5/?
    Comments:
    9
    Kudos:
    18
    Bookmarks:
    1
    Hits:
    147
  11. Tags
    Summary

    You look up at the sky vaguely, then down at him, then up to his brother and then back down. You shoot some finger guns at the smaller one and topple over to your right, just catching yourself before you hit the floor.

    "Pretend you didn't see that," you tell them both, bringing your finger up to your mouth in a clumsy shushing motion. They turn to look at each other briefly, quickly coming to an unspoken decision.

    "...uh huh, i know this sounds stupid an all, seein' as you just beat up a dude for us, but uh, should you be walkin' home alone like this?"

    Language:
    English
    Words:
    2,969
    Chapters:
    1/1
    Bookmarks:
    1
    Hits:
    19
  12. Tags
    Summary

    A compilation of one-shots and drabbles, centering around Undertale and its AUs.

     FEATURING:

    The Swapfells being memelords
    Error having a solo angst party
    Lust discovering romance
    Polyamory and rarepairs. Just. yeah. Lots of it.
    Ink being a jerkity jerk
    Things that escalate quickly
    Many AUs
    Crappy roleplays
    Lots of crack

    AND

    an author that has absolutely NO clue what they're doing! :D

    *Pairing(s) subject to change.

    Series
    Language:
    English
    Words:
    21,224
    Chapters:
    22/?
    Comments:
    273
    Kudos:
    163
    Bookmarks:
    13
    Hits:
    3577
  13. Tags
    Summary

    Before Frisk six other humans fell into the Underground. They traveled through a world of monsters and met King Asgore. But, what if instead of taking their lives...he took them in?

    Inspired by underflake's comic .

    Language:
    English
    Words:
    95,225
    Chapters:
    35/41
    Comments:
    328
    Kudos:
    146
    Bookmarks:
    31
    Hits:
    4439
  14. Tags
    Summary

    Frisk had never killed anyone. Not only that, but Frisk had also saved the entire underground and brought them to the surface.
    That means that everything is good. Everyone is happy. Everyone is safe.
    Right?
    Well... *giggle ominously* not quite.
    After all...
    Since when were you the one in control?

    A series of one shots regarding PaciFrisk's journey through the Pacifist Route and how it would affect them on the surface. A lot of headcannons. No Neutral or Genocide Routes.
    And no Resets.
    Ch. 1: A meeting between a child and a flower with a new guide in sight?
    Ch. 2: Frisk goes to talk to Asriel
    Ch. 3: Toriel wakes up to screaming
    Ch. 4: Sans regards Frisk's sacrifice
    Ch. 5: Who are Frisk's living besties?
    Ch. 6: Heartbeat, Part 1
    Ch. 7: Some buttons are pressed ;)
    Ch. 8: Nightmares of insanity
    Ch. 9: First surface death
    Ch. 10: New eerie discoveries
    Ch. 11: Visiting Snowdin on a bad day
    Ch. 12: New mode unlocked
    Ch. 13: Manifested Determination
    Ch. 14: Plans for the future
    Ch. 15: Dream-Dive
    Ch. 16: A walk in the park
    Don't own undertale, Toby Fox does.

    Series
    Language:
    English
    Words:
    108,459
    Chapters:
    39/?
    Comments:
    164
    Kudos:
    186
    Bookmarks:
    15
    Hits:
    4119
  15. Tags
    Summary

    "Oh wow. You really thought this was just a bar? A cabaret? No no, this is a whorehouse my friend." Sans grinned widely at his brother's shocked reaction.

    Language:
    English
    Words:
    5,029
    Chapters:
    2/?
    Comments:
    1
    Kudos:
    5
    Bookmarks:
    1
    Hits:
    75
  16. Tags
    Summary

    A much abused Underfell Sans trades places with the overly adorable Underswap Sans. While UF Sans struggles to overcome his fears and insecurities US Sans has his core belief challenged. Everyone can be a good person if they just try. Even this fallen Papyrus can be good . . . Right?

    Language:
    English
    Words:
    812
    Chapters:
    1/1
    Kudos:
    5
    Hits:
    36
  17. Tags
    Summary

    Side work I'm doing when I'm desperate to update my main fic but don't want to
    I like writing, I'm sorry

    Just a bunch of one-shots I'm doing with different Monster Readers

    Maybe I'll give you all new fetishes >:3
    I'll infect you with Monster Girls x Skeletons
    *Evil laugh*

    Language:
    English
    Words:
    38,414
    Chapters:
    59/?
    Comments:
    409
    Kudos:
    110
    Bookmarks:
    10
    Hits:
    3599
  18. Tags
    Summary

    You're dying.

    There's none of the panic or denial you might expect from such a realisation – just calm acceptance. Maybe even relief.

    You're dying and that's okay.

    Perversely, your last thought before the darkness claims you is Sans. Heh, he's going to be so mad. You've royally messed up his plans now, whatever they are... were. It's almost funny, imagining the lazy skeleton all pissed off. At least you have that warm image to accompany you to the grave.

    ****

    The world has turned to shit in the forty years since Frisk and Toriel's untimely deaths. Monsters rule the surface in quiet despair, while human resistance factions - fueled by an unrelenting hatred - continue to prod at the festering wounds left by a war few really wanted.

    Sans has a plan to fix it though. He'll have to flirt with the fine line between what's right and what's best, but if everything pans out the way he hopes...

    The end will justify the means.

    Unfortunately, he needs your help to pull it off, and you're far from being the most cooperative rebel he's ever met.

    Language:
    English
    Words:
    80,413
    Chapters:
    59/?
    Comments:
    1098
    Kudos:
    1083
    Bookmarks:
    122
    Hits:
    18321
  19. Tags
    Summary

    You haven't had an easy life. The mistakes you've made have carved literal scars into your mind and body. A precious life was lost because of you. But now you've moved to a new city, trying to leave all that behind you. You've got a promising new internship at the radio station, new chances to start over. The foggy past is behind you.

    And perhaps a bright new future is ahead. You don't know what to expect. Meeting a new family of monsters certainly wasn't even close to what you imagined. A certain pun loving skeleton who seems to have his own share of trauma catches your attention in particular. But can you trust him with your scars?

    Language:
    English
    Words:
    315,051
    Chapters:
    76/?
    Comments:
    1600
    Kudos:
    1887
    Bookmarks:
    266
    Hits:
    32925
  20. Tags
    Summary

    The reader is Frisk's older sister, and escapes with Frisk to the Underground to get away from their abusive parents. The reader has never been able to make it to the surface since the first timeline, so Frisk resets countless times in an attempt to save their sister. The reader is almost able to reach the surface one timeline, but in desperation to give Frisk a family, kills another being for the first time, and is haunted by Chara afterwards... Sans tries to save you, but Chara wants to destroy him just as much as they want to destroy you.

    Language:
    English
    Words:
    124,373
    Chapters:
    26/?
    Comments:
    109
    Kudos:
    146
    Bookmarks:
    26
    Hits:
    2639

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