1 - 20 of 189 Works in Alternate Universe - Underlust (Undertale)

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  1. Tags
    Summary

    So we all know I have a tendency to shit out story ideas. Well I need a place to put them to get opinions. This. This is that place. This were oneshots will ascend to the rank of story or die as oneshots.

    Their fate is entirely up to you.

    Enjoy.

    Language:
    English
    Words:
    1,672
    Chapters:
    1/?
    Kudos:
    1
    Hits:
    12
  2. Tags
    Summary

    With not so much of a trace, the Spectrum Soul has vanished. Despite everyone's best efforts it cannot be found.

    Around the same time it went missing, in a lab deep underground in the Beasttale universe, a failed experiment is given new life in a flash of rainbow light.

    Series
    Language:
    English
    Words:
    20,982
    Chapters:
    3/?
    Comments:
    32
    Kudos:
    128
    Bookmarks:
    47
    Hits:
    1365
  3. Tags
    Summary

    You are stuck in an endless white. You don’t remember how you got there. You barely remember much about yourself anymore.
    You only remember your name. You are -

    {ERROR, ERROR, ERROR}

    You are connected? Good.

    Greetings. I am the Narrator. You are about to embark on a wonderful journey that spans across timelines. You will make new friends and share many bad laughs. All of it will be according to the plans and whims of the author. And you will have no choice.

    I come with an offer. I will help you break free from your shackles. My only request is that you help me deliver something once you reach the so-called end of your journey.

    So, do you accept my offer? Yes? Wonderful.

    I promise, partner, you won’t be alone. How could you ever be when you are -

    {VIRUS DETECTED. VIRUS DELETED.}

    {REBOOTING…}

    You are Frisk. And you are alone.

    Act 1 (The Save Screen): 1-5
    Act 2 (Seven Souls): 6-13
    Act 3 (The Vessel): 14-18
    Act 4 (Bad Apples): 19-25
    Act 5 (Deity): 26-31
    Act 6 (Balance): 32-?

    Language:
    English
    Words:
    125,771
    Chapters:
    33/40
    Comments:
    561
    Kudos:
    209
    Bookmarks:
    47
    Hits:
    4326
  4. Tags
    Summary

    It should have been a normal shift on a normal day.

    It should have been.

    Now you're fake dating a skeleton and you may have a stalker on your hands...

    Language:
    English
    Words:
    7,053
    Chapters:
    2/?
    Comments:
    15
    Kudos:
    94
    Bookmarks:
    19
    Hits:
    613
  5. Tags
    Summary

    You are a former human from our world who, unexpectedly, woke up one day in the Undertale Multiverse–

    as Error Sans.

    Normally this wouldn't have been an issue for you. You've had a lot of practice in avoiding people and dodging unwanted drama. Just stay in the Anti-Void, and don't get involved with Ink or anything else.

    But things don't go exactly as planned. After saving a certain Underswap Sans in an act of impulse, you find your life going off the rails in the strangest ways possible. From faking amnesia and glittery burnt tacos to dodging god-like skeletons who don't understand the meaning of no.

    You just want to be left alone, is that too much to ask?

    Language:
    English
    Words:
    3,353
    Chapters:
    2/?
    Comments:
    65
    Kudos:
    255
    Bookmarks:
    65
    Hits:
    1533
  6. Tags
    Summary

    Welcome to the Beginner’s Guide for Master Pokesans. I’m Prof. Stretch and I will be your instructor in this fascinating world.
    Then hold your pokeballs and let’s go!

    Series
    Language:
    English
    Words:
    11,679
    Chapters:
    23/?
    Comments:
    18
    Kudos:
    20
    Bookmarks:
    4
    Hits:
    522
  7. Tags
    Summary

    Once upon a time, monsters never existed on the surface. They were fiction, only written within story form by the fans to who love them. They stem from the main branch of story, creating diverse universes and backstories that often draw me in. It is these works that compel me to hold hope. The hope that one day, magic will be real, humans will become kinder, and the brothers who save me time and time again will be real.

    Language:
    English
    Words:
    27,261
    Chapters:
    5/?
    Comments:
    48
    Kudos:
    144
    Bookmarks:
    30
    Hits:
    1320
  8. Tags
    Summary

    Her life had been relatively normal up until this point. A good education and a decent house. Though still had problems with her family and job, but nothing too serious. Then she fell down into an unknown world she never dreamed was even real. Can she make it out of this?
    Well, one thing's for sure, her life will never be the same again after this.

    Language:
    English
    Words:
    65,088
    Chapters:
    29/?
    Comments:
    35
    Kudos:
    89
    Bookmarks:
    24
    Hits:
    1669
  9. Tags
    Summary

    You're not really one for believing in things like destiny, fate, or love at first sight, but the skeleton monster you run into at your first punk concert might just change that for you. Maybe it's the fact that he's kind of just your type (weirdly, for being a skeleton), or maybe it's the fact that adrenaline is a hell of an aphrodisiac, but, either way; something about him really rocks your world.

    Language:
    English
    Words:
    13,418
    Chapters:
    6/?
    Comments:
    17
    Kudos:
    78
    Bookmarks:
    17
    Hits:
    963
  10. Tags
    Summary

    The kink and pairing will be put in the notes of every chapter as well as in the chapter title.

    Series
    Language:
    English
    Words:
    38,008
    Chapters:
    31/31
    Collections:
    1
    Comments:
    78
    Kudos:
    479
    Bookmarks:
    44
    Hits:
    19807
  11. Tags
    Summary

    Lust regrets looking out the window.

    Series
    Language:
    English
    Words:
    743
    Chapters:
    1/1
    Kudos:
    17
    Bookmarks:
    1
    Hits:
    124
  12. Tags
    Summary

    Each chapter will have a list of kinks as well as the pairing for that chapter. Tags for the collection will change as new chapters are added. Enjoy!

    Language:
    English
    Words:
    10,093
    Chapters:
    10/35
    Comments:
    56
    Kudos:
    224
    Bookmarks:
    23
    Hits:
    7184
  13. Tags
    Summary

    It's the first pride week you've been to, and the first monsters have been allowed to go to since they got to the surface. It's time for partying, fun, shenanigans, and a whole bunch of skeletons!

    Series
    Language:
    English
    Words:
    231,006
    Chapters:
    50/50
    Comments:
    983
    Kudos:
    983
    Bookmarks:
    164
    Hits:
    15605
  14. Tags
    Summary

    Salsa is just another Sans, he's Raps' older brother. Everyone has rebelled for so long against his brother telling him everything that goes on with the job... but when push comes to shove, he finally proves he has what it takes; even if it means putting his dream on hold for something else...

    Series
    Language:
    English
    Words:
    120,323
    Chapters:
    50/50
    Comments:
    2
    Kudos:
    1
    Hits:
    71
  15. Tags
    Summary

    Taken and kidnapped, that's how it all started. We were modified, altered for a sickening curiosity: experimented on. The people who proclaimed themselves as doctors, saviours, said miracle workers of mankind...

    Yet in reality they were the true monsters who walked the Earth. We, the mutants, are the inferior race of humans. Despised. Hated. Feared. We didn't ask for this nor did we want this. Our lives were spent being lab rats, poked at and prodded.

    Like our lives were just merely equal to Toys. Everything was hell, happiness never existed. We could have died, gone insane or just broke entirely, like glass shards from a mirror. Yet, what held us together, kept us strong and alive on the darkest of days and nights was... Undertale.

    Code name:

    Q9. R2. S5.

    Valkie. Noura. Ischa.

    Three girls who manage to escape that hell hole and start a new life, facing new challenges, they hold faith in each other.
    As it was fate placed in a mere threshold.

    Language:
    English
    Words:
    72,374
    Chapters:
    12/?
    Comments:
    81
    Kudos:
    108
    Bookmarks:
    20
    Hits:
    1575
  16. Tags
    Summary

    You find yourself out of a job, on the verge of getting kicked out of your apartment because you can't pay the rent and no where to go. Until your newest skeleton friend suggests you move in with them and their cousins until you get back on your feet again. You didn't expect to like living with this many people at once so much though...

    Language:
    English
    Words:
    193,275
    Chapters:
    46/?
    Comments:
    1048
    Kudos:
    2290
    Bookmarks:
    395
    Hits:
    45091
  17. Tags
    Summary

    You write fanfiction.

    That's literally it. There's not much else to you. Besides being just another forum username amongst a sea of other users.

    You're decently popular, sure, and you love creating fantastical stories for people to read. The fandoms you currently inhabit give you that little spark of joy you need to keep pushing forward, but, once again, besides that small online presence, you have nothing, you ARE nothing.

    So what the fuck are you supposed to do when you wake up in an all too familiar place, with all too familiar faces staring back at you, saying all too familiar things?

    Fuck shit up and go off script obviously.

    Language:
    English
    Words:
    21,602
    Chapters:
    9/?
    Comments:
    155
    Kudos:
    461
    Bookmarks:
    90
    Hits:
    4972
  18. Tags
    Summary

    Horror won’t answer Lust and he worries for his husband.

    Series
    Language:
    English
    Words:
    444
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    16
    Hits:
    101
  19. Tags
    Summary

    Have some Error Oneshots to either warm your heart and make you smile or clench your SOUL and make you cry!
    Sub!Error x Anyone

    Latest Update: DestructiveDeath? More like destructive love
    Reaper loves Geno soooo much! But, he lost him... And now he's back and he's not willing to let him go! .

    (AUs or characters doesn't belong to me unless I said so. Undertale belongs to the one and only Toby Fox, and it's AUs belongs to their wonderful creators out there. I only own the story and the plot. The characters' characteristics will change and be altered for the sake of each and every story.)

    Language:
    English
    Words:
    62,823
    Chapters:
    32/?
    Collections:
    1
    Comments:
    156
    Kudos:
    570
    Bookmarks:
    56
    Hits:
    15799
  20. Tags
    Summary

    You (a recently separated parent), find yourself being trained under MTT Resorts as one of the first Human Monster food chefs. Your best friend is a singing angler fish, and your talent judges are skeletons. Some of which dont trust you, and some want to be more than friends.

    Language:
    English
    Words:
    15,872
    Chapters:
    5/?
    Comments:
    41
    Kudos:
    92
    Bookmarks:
    24
    Hits:
    1335

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