1 - 20 of 1261 Works in Alternate Universe - Swapfell (Undertale)

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  1. Tags
    Summary

    Being stuck in a house is bad, but being stuck in a house knowing there’s a whole multiverse out there is worse. But you have a plan to get out of the house and away from a certain monster you call Ink, with the help of the 7 souls living inside you.

     

    ( pleaseee i can’t write a summary for shit but hope that summed up everything)

    *Summary updated

    Language:
    English
    Words:
    11,871
    Chapters:
    5/?
    Comments:
    20
    Kudos:
    46
    Bookmarks:
    14
    Hits:
    683
  2. Tags
    Summary

    After your little sister ran away, you decided to strike out on your own. Nine months later, nothing was different except for the fact you slept in your car. Living in a 1997 Honda Civic in the parking lot of your local Walmart was not ideal, but it was better than rotting away under the same roof as your mother. You could have run far away, but you were bound here. Bound by blood and obligation. There was no escaping family.

    The machine was broken, and it would never work again. It was a mistake Sans would never live down, ripping alternate versions of himself and Papyrus away from their home and into a strange new world with no way back. They moved to this town far from Ebott hoping to create something new. To plant roots, find meaning or tie themselves to this world with Papyrus and Sans following at their heels. Out of guilt or obligation, no one was sure. There wasn't anyone else but each other, after all. It’d be an awkward tango wading through guilt and resentment, but everyone was trying. Family wasn’t built overnight.

    The classic eight skeletons set up with a very heavy focus on building relationships between the characters, so prepare for the world's slowest burn.

    Language:
    English
    Words:
    33,671
    Chapters:
    11/?
    Comments:
    104
    Kudos:
    238
    Bookmarks:
    66
    Hits:
    3182
  3. Tags
    Summary

    A small collection that started as Kinktober one shots inspired by the Bonely Hearts Club game. Might continue this as a fun little side project to just get NSFW ideas out of my head.

    Language:
    English
    Words:
    12,359
    Chapters:
    13/?
    Comments:
    6
    Kudos:
    158
    Bookmarks:
    24
    Hits:
    4495
  4. Tags
    Summary

    Working in a call center. Reader has had to deal with a right nasty individual by the name of Sans Skeleton as everyone is terrified of him in the call center. When he calls it's a nightmare... however reader has risen to the challenge and has earned Sans respect... maybe something more as well.

    Language:
    English
    Words:
    4,840
    Chapters:
    1/?
    Comments:
    10
    Kudos:
    80
    Bookmarks:
    19
    Hits:
    310
  5. Tags
    Summary

    You live with 7 skeletons and they all ignore you, even the one who doesn't live in the house. You're fine with that though and you don't blame them. They are grieving after all and you don't want to upset them anymore.

    But after Rus unexpectedly stops by for a visit you notice something.

    Language:
    English
    Words:
    1,854
    Chapters:
    1/1
    Comments:
    10
    Kudos:
    48
    Bookmarks:
    6
    Hits:
    345
  6. Tags
    Summary

    A family trip to the monster capital of Ebott leads to the whole upturning of your life. You're just a kid, what can you do?

    Language:
    English
    Words:
    3,408
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    6
    Bookmarks:
    2
    Hits:
    27
  7. Tags
    Summary

    Papyrus is a traitor to the underground as well as his brother, you trusted him, you were angry at him. After the monster broke the barrier and the war against humans began.

    Sans was messing with machine again with his alternate universe selfs, he was THIS close on finally fixing it till it malfunction and explodes... Again.

    Causing non-skeleton monster to arrive.

    Language:
    English
    Words:
    614
    Chapters:
    2/?
    Comments:
    3
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    89
  8. Tags
    Summary

    Hello there Reader! Your name is Dee! And you have just moved back to your hometown of Ebott! Though after 17 years it sure looks different! As you return to your beloved hometown, now a capable 24 year old human being, you can't seem to shake the chill of your past and the effects it's having on your mental state. Oh! But maybe those nice skeleton monsters can help chase away those pesky memories of yours.

    *Reader is an AFAB She/Them. Not your cup of tea then move on. :)

    **Updates are ever Friday at 12PM EST!

    Language:
    English
    Words:
    14,729
    Chapters:
    4/?
    Comments:
    2
    Kudos:
    19
    Bookmarks:
    6
    Hits:
    293
  9. Tags
    Summary

    This story is currently under major editing until the first chapter comes out, all tags are currently temporary.

    When two young experiments decide that they want their freedom a strange turn of events puts a stop to their plans. The two wake up in a reality that is not their own, but they are completely unaware. All they know is that right before they could get their highly desired freedom they ended up in the woods in the middle of nowhere, but surprise surprise, the woods they found themselves in belong to a certain group of skeletons. What will happen when the skeletons find the two hybrids hiding away on their property? Will they be welcomed or turned away? What will happen to the pair, and how will they adapt to their new environment? I think it's high time we find out.

    Language:
    English
    Words:
    6,524
    Chapters:
    4/?
    Kudos:
    10
    Bookmarks:
    1
    Hits:
    108
  10. Tags
    Summary

    The feeling of the stage lights on your body, and the stares of thousands, had ceased to make you nervous. However, a small group of intimidating skeletons in your audience? Beyond horrifying.

    Language:
    English
    Words:
    1,529
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    20
    Bookmarks:
    5
    Hits:
    90
  11. Tags
    Summary

    Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.

    A skeleton monster to be precise.

    With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.

    What a surprise for you when you find out that someone does. A lot of someones.

    Language:
    English
    Words:
    304,486
    Chapters:
    42/?
    Comments:
    2430
    Kudos:
    2346
    Bookmarks:
    477
    Hits:
    79509
  12. Tags
    Summary

    As more and more versions of his brother and himself appear out of the machine in their basement, sans decides they need to move to a new house as this one is getting too cramped.
    Luckily for him one large enough for all of them was sold extremely cheap.
    There had to be a reason it was so cheap and why the salesperson was so quick to shove the key in their hand and drive away. When they meet their mage neighbour the realise just why.

     

    (This is my first fanfiction so be nice)
    This is necromancer male reader
    I wanted to see more tall buff strong reader stuff so I decided to do it myself. Prepare for badly written romance with sprinkles of crack and angst.

    Language:
    English
    Words:
    4,751
    Chapters:
    3/?
    Comments:
    23
    Kudos:
    177
    Bookmarks:
    31
    Hits:
    1574
  13. Tags
    Summary

    You were human once.
    Or, so was what the doctors told you.

    You wake to the world in a hospital bed with absolutely no memories about yourself and a body that is yours, but also not. Not your original, that is. While the authorities try to uncover what happened to you, the only survivor, you are left with next to nothing but the possibility to rebuild your life from scratch as a skeleton monster with a human soul.

    To ensure your safety while your unknown perpetrators are being hunted down, you are placed within a home containing an almost worrying amount of skeletons with varying personalities. Naturally, your life bursts into color and chaos as you try to navigate your days with your new roommates, but you seem to handle it well enough. Even if there are too many secrets lurking about.

    You wonder constantly – who are you?

    Language:
    English
    Words:
    38,329
    Chapters:
    5/?
    Comments:
    165
    Kudos:
    380
    Bookmarks:
    108
    Hits:
    4051
  14. Tags
    Summary

    Rei is a man with many secrets and is known by many names.

     

    He is the soul of Patience.

    Language:
    English
    Words:
    5,725
    Chapters:
    4/?
    Comments:
    2
    Kudos:
    13
    Bookmarks:
    5
    Hits:
    109
  15. Tags
    Summary

    After the Barrier breaking, you Sans and Papyrus have gotten to know each other as friends over the course of several years. And you and the skeleton brothers live just outside of the official monster town as roommates in your grandfather's old lodge. But while Papyrus is out of town Sans somehow manages to bring alternate versions of himself and his sibling into your world.

    You and the brothers are going to have to find a way to get along with everyone until they find a way home. But it's not going to be a simple as it seems. Shenanigans will ensue. Hope you're prepared.

    Series
    Language:
    English
    Words:
    8,824
    Chapters:
    4/?
    Comments:
    15
    Kudos:
    20
    Bookmarks:
    7
    Hits:
    268
  16. Tags
    Summary

    In a half-Swapped Fell-verse, Captain Sans of Her Majesty's Royal Guard unexpectedly finds himself with custody of his younger brother.

    Series
    Language:
    English
    Words:
    17,605
    Chapters:
    10/?
    Comments:
    48
    Kudos:
    63
    Bookmarks:
    4
    Hits:
    745
  17. Tags
    Summary

    Sometimes, you liked to imagine that Frisk was this kind and sweet because of you.
    That, maybe, you had lived up to your promise of being the best sister you could be when they were first born.
    That you taking the brunt force of your abusive father’s hits and drunk mother’s curses was worth it.

    You had protected them from the reality of your family and… you knew that you had to protect them now.

    You were Determined… To stay Kind.

     

    Arc 1 - Chapters 1-18
    Arc 2 - One Shots 19-22
    Arc 3 - Entries 23-36
    Arc 4 - Chapters 37-??

    Language:
    English
    Words:
    225,195
    Chapters:
    45/?
    Comments:
    377
    Kudos:
    1390
    Bookmarks:
    257
    Hits:
    27037
  18. Tags
    Summary

    Cross is soulless. Has been for a while. The gang doesn't know about it though. He doesn't want to worry them. Besides, he didn't want them to hate him...
    ~~~
    Nightmare is worried. He noticed something is off with Cross. His soul doesn't react to blue magic, he never gets in a "fight", his HP is low, and 2 of his stat facts are hidden. Is Cross sick..?

    Series
    Language:
    English
    Words:
    23,954
    Chapters:
    25/?
    Comments:
    226
    Kudos:
    607
    Bookmarks:
    65
    Hits:
    9984
  19. Tags
    Summary

    Imagine your surprise coming back from a family trip only to find your girlfriend getting treated like shit in your own home. All because a of some girl and her crumbling harem.

    Oh. Hell. No.

    Series
    Language:
    English
    Words:
    4,170
    Chapters:
    3/?
    Comments:
    5
    Kudos:
    19
    Bookmarks:
    4
    Hits:
    122
  20. Tags
    Summary

    "Don't be surprised if this doesn't end the way you want it to."

    "Oh do not worry, it will. This is what brought them here, and if it wants them back, who am I to stop it?"

    He only worries for their safety, but who is he to judge the other's decision?

    A malfunction of this magnitude is improbable, but not impossible:
    That was when they saw it, two beings, one larger and one smaller. While the machine had once spat out skeletons on a regular basis, it was deemed derelict after the last two came through over 6 months ago. It seemed other universes lacked the means or the will to travel elsewhere, thus it was shut off for good; the safety of the skeletons and the city was considered more important than the possibility that untamable beings traveled through. How could it have produced two more if it was unplugged? And why had it exploded in the first place, it was unpowered! All of their minds filled with fear, curiosity, and gloom.

    Language:
    English
    Words:
    18,770
    Chapters:
    7/?
    Kudos:
    4
    Hits:
    90

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