1 - 20 of 40,988 Works in Sans (Undertale)

Navigation

Listing Works

  1. Tags
    Summary

    Error and Ink have a conversation in outertale.
    ✧・゚: *✧・゚:*.・゜゜・༶☽༓・*˚⁺‧͙☆⋆。𖦹°‧★

    Language:
    English
    Words:
    320
    Chapters:
    1/1
    Hits:
    0
  2. Tags
    Summary

    You were so excited to finally get married to your long time fiancé, only for him to leave you for another girl with nothing but a note. Lucky for you, your two best friends were there to help you through this rough patch of your life.

    Series
    Language:
    English
    Words:
    12,551
    Chapters:
    11/?
    Comments:
    144
    Kudos:
    141
    Bookmarks:
    37
    Hits:
    3,040
  3. Tags
    Summary

    Every Sensei is different, so who are these other Senseis?

    Well, you have a skeleton that can teleport, a suave assassin who turns invisible, a dragon (and a maid?), a rabbit that can freeze a city, a Yakuza legend, and... a horsegirl?!

    A collection of contained crossover Senseis from different fandoms updated for every day of AU-gust 2025!

    Language:
    English
    Words:
    32,374
    Chapters:
    21/30
    Collections:
    1
    Comments:
    266
    Kudos:
    222
    Bookmarks:
    31
    Hits:
    11,186
  4. Tags
    Summary

    You were going on a walk, its supposed to be good for you or something. Suddenly you get pulled into a party you knew nothing about with people you know nothing about. You were just minding your business, so why does everyone now think you're dating your skeletal neighbor?

    Language:
    English
    Words:
    7,188
    Chapters:
    3/?
    Comments:
    5
    Kudos:
    38
    Bookmarks:
    8
    Hits:
    380
  5. Tags
    Summary

    There was no hope.

    There was no way out of this place. Sans knew that from the depths of his soul- he couldn't escape on his own. But without any way to contact anyone and no knowledge of where he's trapped, all he could do was try to survive... or maybe just hope for death.

    No more resets, after all.

    Language:
    English
    Words:
    27,460
    Chapters:
    8/?
    Comments:
    27
    Kudos:
    48
    Bookmarks:
    9
    Hits:
    1,035
  6. 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:
    2,251
    Chapters:
    1/?
    Hits:
    1
  7. Tags
    Summary

    Kris woke up the next day to see the cage empty. But that was strange, they don't remember putting the soul back in their body. They grabbed their chest to feel it, only to feel a strange coldness instead.

    Meanwhile, after something hit the wagon. The soul flew off to find Kris to stop whatever they were doing. But after not finding them, the soul heads to castle town, where somebody had already had opened the door.

    Series
    Language:
    English
    Words:
    44,258
    Chapters:
    31/?
    Comments:
    199
    Kudos:
    523
    Bookmarks:
    61
    Hits:
    16,521
  8. Tags
    Summary

    You should be dead. Everyone else in this god forsaken city died as soon as the barrier came down and these creatures, these MONSTERS, invaded Ebott City. You got lucky, or maybe not.

    You had the bloodline of a mage. Which meant you could create barriers. In a moment of panic you had created a barrier in your apartment, locking you and your neighbor inside, and the monsters out.

    But now the clock was ticking and you had a group of skeletons sniffing around your apartment, telling you that they couldn’t wait to drag you back to their den.

    They meant as food…. r-right?

    Language:
    English
    Words:
    21,695
    Chapters:
    9/?
    Comments:
    145
    Kudos:
    305
    Bookmarks:
    64
    Hits:
    3,823
  9. Tags
    Summary

    It's six years after the Emergence, and while most of the monsters decided to stay close to the mountain on the west coast, slowly but surely a good few made it over to the opposite coast and settled down in Washington DC. Besides the King and Queen and their human child - relocated to the political center of the US for obvious reasons, you mostly see dogs, bunnies, and cat monsters integrating themselves among your coworkers and neighbors. Things aren't perfect, but they're improving day by day.

    You have a fulfilling job as a PR and Marketing Expert, a handful of close friends, and a stable and predictable routine.

    When you randomly meet a brand new type of monster in town while late night shopping, you can't help but be frightened of him. After all- he's literally a living skeleton! Embarrassing, but at least you'll never have to see him again... right?

    What happens when fate has other plans, and you just. keep. running into each other?

    Let's find out.

    Series
    Language:
    English
    Words:
    33,031
    Chapters:
    8/?
    Comments:
    60
    Kudos:
    65
    Bookmarks:
    13
    Hits:
    857
  10. Tags
    Summary

    After Basil’s death, Sunny runs towards his home in an attempt to end it all, but Aubrey follows him and she prevents him from dying. Sunny tells her the truth and now they have to face it together.
    After moving, they find themselves camping until something happens and now the two will travel together in order to escape the Underground filled with creatures that were only believable to see in fantasy books.

    Notes:
    the Undertale tags are there because I want to make an Omori x Undertale fanfic, but there won't be anything related to Undertale during the first two chapters except for some references to Mt. Ebott and its legend, but around Chapter 3 or 4 onward, the Journey through the underground will begin!
    So stay PATIENT!

    Series
    Language:
    English
    Words:
    145,582
    Chapters:
    59/?
    Comments:
    192
    Kudos:
    480
    Bookmarks:
    47
    Hits:
    23,422
  11. Tags
    Summary

    Ten years after the the barrier broke and the underground freed, Frisk and their friends need to find a balance between living a normal life on the surface, and uncovering something darker than dark.

    Language:
    English
    Words:
    1,968
    Chapters:
    2/?
    Hits:
    16
  12. Tags
    Summary

    The monsters are one soul closer to freedom. Another human has been judged, sentenced, and harvested. It's a time to celebrate.
    The judge, however, is in a less festive mood.

    Language:
    English
    Words:
    2,244
    Chapters:
    1/1
    Kudos:
    2
    Hits:
    8
  13. Tags
    Summary

    A story about Ink and Co. being space pirates and are living in the vastness of space.
    Dream and Nightmare are immortal pirate captains, well known and feared among merchants and other sailors alike as Burning Sun and Kraken.
    Ink, also immortal, is a member of Dream's crew and has been his closest friend for as long as he can remember.
    It's a dangerous life they live with the guard hunting them down and trying to kill them.
    So what happens when Dream and Nightmare get a call asking for help from the very guards that want them dead, offering a full pardon for their crimes if they do.
    All they have to do is catch someone who is known as the 'Destroyer' and bring them in, so they can be dealt with permanently.
    Problem is, no one knows who that is.

    Series
    Language:
    English
    Words:
    108,913
    Chapters:
    23/?
    Comments:
    101
    Kudos:
    179
    Bookmarks:
    41
    Hits:
    6,556
  14. Tags
    Summary

    First kinktober ever, list isn't complete but trust it will be done by Halloween.

    Dedicating this fic to my very very special friend of mine. Pookie, if you see this, ily <3

    Uh yeah, hope y'all enjoy ^^

    Language:
    English
    Words:
    10,109
    Chapters:
    7/32
    Comments:
    16
    Kudos:
    29
    Bookmarks:
    9
    Hits:
    1,059
  15. Tags
    Summary

    IT'S THAT TIME OF THE YEAR!
    Kinktober time~!

    So yeh this is basically short drabbles of smut. Some will be longer, some will be shorter but I'm gonna try my best to make them juicy~

    --------------------------------------------------------------------------------

    Language:
    English
    Words:
    3,836
    Chapters:
    3/31
    Comments:
    2
    Kudos:
    12
    Bookmarks:
    4
    Hits:
    717
  16. Tags
    Summary

    Two friends, just wanting to find an escape to their ruined world, try to use a machine that would supposedly fix everything.

    They really didn't expect to wake up in a new multiverse.

    They definitely did NOT expect to wake up as the Destroyer and Creator themselves.

    Both just want to find their friend, for them to be ok.

    The Multiverse has bigger plans for them, however.

    Or: two kids make themselves spawn in the UTMV, but they have to fight each other to keep the balance.

    Generally random updates but never more than a week.

    Language:
    English
    Words:
    5,164
    Chapters:
    4/?
    Comments:
    8
    Kudos:
    5
    Bookmarks:
    1
    Hits:
    63
  17. Tags
    Summary

    After your mother (the last person that cared about you) passes away and you lose your job, you decide that you are going to move out of Ebott City to start a new life. On your last day in Ebbott City you make a wish into a fountain, and end up falling in. When you get out of the fountain however you find yourself face to face with a pair of skeleton brothers, and for some reason its now the 1930's???? It turns out that the Skeleton brothers are the head of the Mafia that runs your side of the city, and you now live in their district. Papyrus seems to be nice, Sans however is skeptical of you and your intentions and makes it known pretty quickly. Reader has to navigate living in a different time and figure out what their life will look like moving forward, and she wants these strange skeletons to be a part of it.

    This is a slow-burn romance where Sans doesn't want to like you, but cannot seem to stay away. Enjoy!

    Language:
    English
    Words:
    54,938
    Chapters:
    12/?
    Comments:
    23
    Kudos:
    108
    Bookmarks:
    28
    Hits:
    3,013
  18. Tags
    Summary

    Monsters were freed from the Underground and Mettaton was very quickly considered one of the biggest celebrities in the world. But at what costs?

    That's mostly Papyton fic centered around Mettaton, but there's also another relationship at the beggining (but papyton rocks)

    Language:
    English
    Words:
    1,854
    Chapters:
    2/?
    Kudos:
    1
    Hits:
    18
  19. Tags
    Summary

    Girls, women and boys are sold and abandoned,

    Burdens are more bigger than most think.

     

    You have to survive or you deal with situations where you're the problem.

    Don't ever get attached, ever.

    I learned it the hard way.

    - Lust

    Language:
    English
    Words:
    7,177
    Chapters:
    1/1
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    119
  20. Tags
    Summary

    A mysterious mission request arrives at Nightmare’s castle, leading to Dust and Fell being gravely injured. With Dust in critical condition, Nightmare finds himself torn between his role as ruthless leader and the emotions he swore never to feel again. As Dust slowly recovers, the gang begins to notice changes—softer words, secret smiles, sleepless nights spent side by side. While the rest of the gang scheme to push them closer, Nightmare struggles with denial, fear, and the possibility that love might be stronger than the corruption consuming him.
    Injury, loyalty, and unexpected tenderness collide as bonds are tested, secrets are revealed, and two broken skeletons learn that changing is hard, but accepting it is even harder.

    . . . . . . .

    -WHY!? WHY DO YOU MAKE ME FEEL LIKE THIS!? I SHOULDN'T FEEL THESE EMOTIONS IN THE FIRST PLACE!

    -Then why the hell your brother can feel sad and depressed but you can't feel fucking happy!?

    Those words shook him to the core...

    . . . . . . .

    Series
    Language:
    English
    Words:
    29,254
    Chapters:
    1/1
    Hits:
    16

Filters

Filter results:
Submit

Include

?
Include Ratings
Include Warnings
Include Categories
Include Fandoms
Include Characters
Include Relationships
Include Additional Tags

Exclude

?
Exclude Ratings
Exclude Warnings
Exclude Categories
Exclude Fandoms
Exclude Characters
Exclude Relationships
Exclude Additional Tags

More Options

Crossovers
Completion Status
Word Count
Date Updated
Submit

Clear Filters

Navigation