1 - 20 of 1735 Works in Alternate Universe - Underfell

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  1. Tags
    Summary

    Currently sitting on your 8th floor apartment balcony, you were crying into a glass of wine. You slowly lifted the glass to your lips, and gracefully chugged the remainder of the wine. You are nothing if not a classy drunk.
    --------
    hey!!! this has a few dark themes but is mostly centered around recovery and has a bunch of fluff! i appreciate constructive criticism ;P
    I'm a sucker for the "opposites attract" trope, so you're a kind-hearted green souled human girl with an apartment in the city. Sans spots you and develops a crush. Shenanigans ensue.

    Language:
    English
    Words:
    71,049
    Chapters:
    40/?
    Comments:
    218
    Kudos:
    631
    Bookmarks:
    93
    Hits:
    10035
  2. Tags
    Summary

    Sans isn't the biggest fan of humans.

    A chance encounter makes him think that maybe they're not all bad.

    I suck at summaries T_T

    Series
    Language:
    English
    Words:
    41,369
    Chapters:
    22/?
    Comments:
    201
    Kudos:
    510
    Bookmarks:
    53
    Hits:
    7261
  3. Tags
    Summary

    In this world, the war between Humans and Monsters never happened. This has allowed them to grow closer and begin to cross breed via a rare process called Resonance, which involves Souls looking for other Souls with matching or similar frequencies. This creates such a loving and powerful bond that when the short-lived Human dies first, the grief their Monster partner feels Breaks their Soul, killing them and allow the two to be buried together.

    However, you're about to find out that this process doesn't always work as intended. When your Soul Resonates with your new neighbor Sans, he appears to have a panic attack and takes off.

    Despite that, there's an irresistible pull between you two and you're willing to do all you can to have a relationship with him--- even if you're not the one who finally Breaks him.

    Underfell AU
    Switches between 2nd and 3rd POV
    Updates Tuesday and Thursday

    Language:
    English
    Words:
    33,656
    Chapters:
    17/?
    Comments:
    441
    Kudos:
    369
    Bookmarks:
    45
    Hits:
    4334
  4. Tags
    Summary

    It is rather peaceful to be in Paperjam's daycare. There are lovely things that happen for all of the kids. There are things to do, and they are all allowed a large amount of freedom. However, there could always be the chance for danger. Paperjam learns this the hard way when one of the very children he is looking after starts to show minor signs of depressions and major amounts of sadness. Worst off, he is not willing to talk to Paperjam to get this all sorted out.

    Adding on top of the pile, there is a kidnapper on the loose and he is hanging closer to PJ's daycare than anyone realizes. Now all of the little Sans's and Paperjam are trying to re-open the closed book Sans and bring him out of his shell, not realizing they are the very ones that had put him into it.

    Can they do it? What will become him if he is abducted by the kidnappers?

    Language:
    English
    Words:
    6,331
    Chapters:
    6/?
    Comments:
    11
    Kudos:
    21
    Bookmarks:
    1
    Hits:
    231
  5. Tags
    Summary

    You are Sentinel, a human involved with the monster mob for the last year of your life. It's taken that time to gain the trust of Boss, Undyne, Grillby, and the rest of the monsters, the only human included in their inner circle. But this only makes you a bigger target to the rival clans and mobs. Someone is working to force the monsters back to the Underground, the prison of their once and former King, and will stop at nothing to do it.

    You'd give your very Soul to keep it from happening.

    - Daily updates. Reader is nicknamed and gender neutral pronouns used where necessary -

    Series
    Language:
    English
    Words:
    8,707
    Chapters:
    10/?
    Comments:
    82
    Kudos:
    72
    Bookmarks:
    8
    Hits:
    985
  6. Tags
    Summary

    Life was good on the Isle of Monsters, which leaves a small skeletal judge at a disadvantage when he wakes in the large and dangerous Void. With no knowledge of the Void or other universes at all, he has to rely on the kindness of strangers to survive. But the Void is full of strange kinds indeed. Perhaps they are in need of his help as much as he needs theirs.

    The first being a huge version of a certain familiar blue parka wearing skeleton. Joining them is another familiar tall, thin, and pointy skeleton, and even an old yellow lizard.

    https://yarnusthegreat.tumblr.com/

    https://discord.gg/jW3NYyN

    Language:
    English
    Words:
    213,304
    Chapters:
    60/?
    Comments:
    116
    Kudos:
    40
    Bookmarks:
    2
    Hits:
    1940
  7. Tags
    Summary

    Basically, a bunch of drabbles/oneshots.

    Language:
    English
    Words:
    3,290
    Chapters:
    3/?
    Comments:
    4
    Kudos:
    14
    Bookmarks:
    1
    Hits:
    91
  8. Tags
    Summary

    Someone murders a young snowdrake in the forest. Only animal footprints are found. The guards Snowdin and the town's favorite dashing blue skeleton go to look for the culprit. But what will they find in the shadows of the frozen forest?

    Language:
    English
    Words:
    5,952
    Chapters:
    3/?
    Comments:
    4
    Kudos:
    21
    Bookmarks:
    2
    Hits:
    139
  9. Tags
    Summary

    Sans has had enough and escapes via the time machine.

     

    Sans will come back sooner or later...

     

    (or not)

    Series
    Language:
    English
    Words:
    10,370
    Chapters:
    5/31
    Comments:
    15
    Kudos:
    32
    Bookmarks:
    3
    Hits:
    922
  10. Tags
    Summary

    When monumental events occur, people typically remember where they were when the event happened.

    When 9/11 happened, you were a young child in your living room.

    When the barrier of Mount Ebott broke and the near-forgotten race of monsters emerged onto the Earth, you were taking a piss at a Christmas party.

    The next thing you know, your university is volunteering to use its extra vacancy to house as many of the country’s new immigrants as they can. Your once-sparse dorm hallway is now packed to the brim with monsters. Some are friendly. Some aren’t.

    But they’re all skeletons, and they’re all over the place. And all over you.

    Language:
    English
    Words:
    13,974
    Chapters:
    6/?
    Comments:
    77
    Kudos:
    377
    Bookmarks:
    81
    Hits:
    3650
  11. Tags
    Summary

    It is a normal day for the Fell brothers. On patrol, they have been checking Papyrus' traps in the hopes that a human would have stumbled into their deadly clutches. They weren't counting on capturing Nikki-HalfDemon

    Going to be two versions.
    Chapter One is the SFW and rated T
    Chapter Two is M and Suggestive

    For Nikki-on-Edge on tumblr who made me fan art! .. among other things...

    Language:
    English
    Words:
    5,105
    Chapters:
    2/2
    Comments:
    2
    Kudos:
    24
    Bookmarks:
    1
    Hits:
    224
  12. Tags
    Summary

    How long had we been on the surface? Maybe a few months, but unlike the other counterparts, us from the Fell-verses were less accepted.
    -----
    The human children may have saved the monsters from centuries in the Underground, but who's to say the other humans would be as kind? And what of the monsters who came from worlds less than kind? Acceptance is a difficult concept for those close-minded to grasp. Intolerance can only lead to violence, after all.

    Language:
    English
    Words:
    4,101
    Chapters:
    2/?
    Comments:
    4
    Kudos:
    7
    Bookmarks:
    3
    Hits:
    175
  13. 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:
    100,218
    Chapters:
    49/49
    Comments:
    650
    Kudos:
    437
    Bookmarks:
    36
    Hits:
    6805
  14. Tags
    Summary

    "-Confía en mi. -Dijo el niño de ojos negros, mientras tú te sentabas sobre el gran abismo que dejaba mostrar el agujero- Si saltas, todo se solucionará.
    Asentiste, y te tiraste por el agujero. Observaste cómo la luna roja iba desapareciendo de tu vista en cuestión de segundos mientras caías."

    SEGUNDA PARTE DE LA SAGA. ¡DISFRUTADLA!

    Actualizo una vez a la semana. Entre los días viernes a domingo.

    Capítulos 1-10 ¿Qué está pasando?
    Capítulos 11-30 ¿Rescates?
    Capítulos 31-47 But nobody came
    Capítulos 47-? Todas para una, y una para todas

    OBRA TAMBIÉN PUBLICADA EN WATTPAD. https://www.wattpad.com/user/MatosaurusRex

    Series
    Language:
    Español
    Words:
    191,746
    Chapters:
    66/?
    Comments:
    259
    Kudos:
    186
    Hits:
    706
  15. Tags
    Summary

    They have done this countless times when the king was in heat and truth be told the tyrant was in heat.

    Language:
    English
    Words:
    453
    Chapters:
    1/1
    Kudos:
    6
    Hits:
    50
  16. Tags
    Summary

    Four years ago, Blue might have greeted a truly awful day with a smile, maybe a loud proclamation of his own greatness. It’d seemed almost… simple. All he had to do was stay bubbly and bright, and the world would right itself. If he gave it some time, he would adjust. After all, he was loved, right? He was married, cared about by two of the most considerate monsters in the whole of four undergrounds. Even without the hope of that classic dream of a family, he’d thought… maybe he could be happy.

    He was beginning to learn that life didn’t quite work out the way he’d always thought it would.

    Series
    Language:
    English
    Words:
    3,468
    Chapters:
    1/17
    Comments:
    32
    Kudos:
    32
    Bookmarks:
    1
    Hits:
    235
  17. Tags
    Summary

    Eight years after being forcefully stolen away from your family home with your tutor, you're still trying to force the scars to heal from the most traumatic incident of your life. You have an apartment of your very own. You have a job. You're on speaking terms with your parents-mostly. But nothing is changing. You still wake feeling the earth pressing in, gasping for breath, just wanting it to end-.
    But then you meet a monster with a terrifying grin and an even more terrifying repertoire of jokes, and you learn that when it comes to the path of recovery, you don't have to walk it alone.

    Language:
    English
    Words:
    102,687
    Chapters:
    24/?
    Comments:
    387
    Kudos:
    513
    Bookmarks:
    109
    Hits:
    7515
  18. Tags
    Summary

    You are Rhia (short for Rhiannon), a web editor, who is just starting to get into the popular video hosting world of ViewStream, as a digital artist/gamer. After a fight with your controlling parents, you decide its more than time to get out on your own. Now you're in the middle of nowhere, wondering how in the heck you let Undyne and Alphys talk you into moving in with their skeletal friends.

    This is your adventure in life and love with a whole bunch of skeletons.

    Series
    Language:
    English
    Words:
    72,338
    Chapters:
    30/?
    Comments:
    456
    Kudos:
    414
    Bookmarks:
    81
    Hits:
    7263
  19. Tags
    Summary

    You’re a normal college student. Your biggest worries are homework, studying for finals, and looking for food to eat that’s not from the school’s awful cafeteria. You’re perfectly normal. At least, you used to be before you suddenly wake up in the world of Undertale not knowing how you got there or how to get home. What’s worse is you keep ending up in different AUs! While you have no problem meeting the different versions of everybody’s favorite skeletons, you quickly realize something weird is going on in each world you visit. Something that’s causing a lot of trouble and damage. Looks like you won’t be able to go home until you figure this mess out.

    Wait a minute! What the hell is wrong with your soul?!!

    Language:
    English
    Words:
    59,401
    Chapters:
    11/?
    Comments:
    115
    Kudos:
    242
    Bookmarks:
    43
    Hits:
    2462
  20. Tags
    Summary

    Stretch has randomly appeared in Underfell, looking empty and broken. His soul is cracked and dim, and he himself is near death. As Red speaks to him he discovers that there is only one that can be blamed for his condition.

    The seventh soul of Underswap, the so-called angel of death herself. Frisk.

    *

    My first commission! Oh! So excited! Thank you for commissioning me RedKammy!

    If you are interested in commissioning me for a dabble or short, buy me a coffee!

    Language:
    English
    Words:
    3,119
    Chapters:
    2/?
    Comments:
    6
    Kudos:
    22
    Bookmarks:
    4
    Hits:
    228

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