21 - 40 of 44 Works in Determination Experiments (Undertale)

Navigation

Listing Works

  1. Tags
    Summary

    (An Underfell illustrated story by ElenArtsy.)

    This story is about Frisk's journey through a destroyed and hateful Underground in which they are not welcome. As they struggle to survive the many enemies on their way, they are forced to witness the tragic consequences of the Tyrant's long dictatorship over the citizens' souls and minds... The rules are strict in this merciless world: it's Kill or Be Killed. Will the young human be able to change to fit and survive this cruel reality? Or will they give in to the unstoppable circle of violence?

    Based on the comic Underfell by me. (https://www.deviantart.com/elenartsy/art/Underfell-Intro-1-3-A-long-long-time-ago-816753512) You can also read the story and find all of its illustrations on my DeviantArt profile.

    Language:
    English
    Words:
    47,528
    Chapters:
    9/?
    Comments:
    12
    Kudos:
    51
    Bookmarks:
    13
    Hits:
    1,580
  2. Tags
    Summary

    WiseTale is one of the many prequels to Undertale, it is branched to the main timeline however whether it's the original history of Undertale is still unknown to this day. The AU revolves around the 7th forgotten human that fell after Chara, he is looking for his siblings as they fell down to the Underground. The seventh human is faced with a challenging path will he get to the barrier or will he fall just like...

    Series
    Language:
    English
    Words:
    19,882
    Chapters:
    6/6
    Kudos:
    2
    Hits:
    285
  3. Tags
    Summary

    Necromancy (nɛkrəmænsi)
    The practice of magic involving communication with the dead by summoning their spirits as apparitions or by resurrection for the purpose of divination; to foretell future events; discovery of hidden knowledge; returning the dead person to life or to use the dead as a weapon.

    ***

    What if skeleton monsters weren't born as natural monsters?

    [PLEASE NOBODY ASK FOR MORE CHAPTERS! THIS FANFIC IS OFFICIALLY OVER AND I AM NOT WRITING ANY MORE] thank you.

    Language:
    English
    Words:
    64,399
    Chapters:
    17/17
    Comments:
    46
    Kudos:
    70
    Bookmarks:
    12
    Hits:
    1,756
  4. Tags
    Summary

    Long, long ago, there was a great war.
    Humans, and Monsters also had there disagreements, but nothing quite like this.
    The war waged for years on end, leaving thousands of dusted monsters, and thousands of human bodies.
    However, the two races would tie, as never could prove as the stronger race, and they drew a border that was not to be crossed, less more war wages.
    However, everything changes in the kingdom of the monsters, as the queen stumbles upon a strange discovery.

    Language:
    English
    Words:
    331
    Chapters:
    1/?
    Comments:
    3
    Kudos:
    5
    Hits:
    78
  5. Tags
    Summary

    The first time Doctor W.D. Gaster takes S-01 to see the BARRIER.

    Language:
    English
    Words:
    1,057
    Chapters:
    1/1
    Kudos:
    9
    Bookmarks:
    2
    Hits:
    113
  6. Tags
    Summary

    After Gaster and Alphys' DT experimentation on the fallen down monsters turn very wrong, the royal scientist is terrified of what would happen to him and his family, fearing a possible punishement from King Asgore. But his wife Patty is there to provide the needed comfort, reason his troubled mind and ressure him that he has nothing to fear.

    Series
    Language:
    English
    Words:
    2,501
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    19
    Bookmarks:
    1
    Hits:
    364
  7. Tags
    Summary

    CONTEXT AND INTRODUCTION: This is an official repost of the Another One comic made by Saishan, also known as AstraSai, originally published on DeviantArt. Every page will be uploaded as a separate chapter in this work, accompanied by the author's note at the end.

    Language:
    English
    Words:
    0
    Chapters:
    18/?
    Comments:
    11
    Kudos:
    108
    Bookmarks:
    22
    Hits:
    1,779
  8. Tags
    Summary

    Was perhaps from the moment that Monsterkind were hurled down Mt Ebott like trash that W.D. Gaster knew humans were rotten creatures? Or maybe it was instead during the war when he had been but a young child. Forced to flee from all he's ever known as battle raged across lands, then later as he grew up to create weapons of mass destruction. Perhaps, it was before he was even born that he had know this truth. Gaster was, after all, one of the smartest monsters to have ever lived, and most certainly was the smartest monster in the Underground.

    Because humans were dangerous, after all. They were miserable, miserable creatures that were powerful yes, but miserable.

    And his next invention would be the bridge to that gap between their two races. No. Rather then gap it was a chasm.

    He would create the first biological weapon, and once the barrier was destroyed then nothing would get in its way.

    Language:
    English
    Words:
    9,669
    Chapters:
    3/?
    Comments:
    2
    Kudos:
    63
    Bookmarks:
    10
    Hits:
    1,109
  9. Tags
    Summary

    sans and alphys had been friends for forever, and through lab internships, deaths of friends, mental breakdowns, and questionable experiments, they will always have each others backs.

     

    (sans and alphys centric but ill focus on all characters as much as i can.)

    Series
    Language:
    English
    Words:
    1,918
    Chapters:
    2/?
    Comments:
    6
    Kudos:
    90
    Bookmarks:
    4
    Hits:
    1,430
  10. Tags
    Summary

    You're awake, but you're also not. You fade into the inky black, not quite knowing what to expect of this.

    Despite it all, you weren't scared. It was comforting. It felt like peace.

    But there was a deep part of you that burned. You wanted to live. You wanted to survive.

    And now? Now you had to deal with the consequences of cheating death.

    Language:
    English
    Words:
    1,228
    Chapters:
    2/?
    Comments:
    1
    Kudos:
    18
    Bookmarks:
    4
    Hits:
    171
  11. Tags
    Summary

    Suffering through personal struggles and the ever-present stress of being trapped in the Underground, several monsters Fall Down and are sent to the Royal Scientist in a desperate attempt to salvage their lives. Papyrus is one of them.

    Papyrus is the only monster to walk out of Alphys' lab after being injected with Determination, evading the fate of the Amalgamates.

    He is not spared, however, from other adverse effects.

    Language:
    English
    Words:
    13,494
    Chapters:
    3/5
    Comments:
    44
    Kudos:
    226
    Bookmarks:
    38
    Hits:
    2,573
  12. Tags
    Summary

    How many resets? A hundred? A thousand? A million? How many does it take? How many before there's nothing left at all? And even then... Will the human ever stop? It all begins with a question from Sans about why the human keeps resetting. A question that the human...answers.

    Series
    Language:
    English
    Words:
    121,983
    Chapters:
    33/33
    Comments:
    12
    Kudos:
    64
    Bookmarks:
    10
    Hits:
    1,806
  13. Tags
    Summary

    My headcanon about determination, how it works, and how it plays with time travel. The Author of the paper is a character from Doctor Who (tell me if you figure out who), and the time travel stuff is written based on Doctor Who time travel. Feel free to use this, critique it, or whatever. This is my first work so any advice you have on my writing style I'd really appreciate. Also feel free to ask me anything!

    Language:
    English
    Words:
    4,823
    Chapters:
    7/7
    Kudos:
    13
    Bookmarks:
    1
    Hits:
    140
  14. Tags
    Summary

    Frisk has become power hungry, years after the underground journey they are bossy, hateful and angry a lot. Alphys takes it upon herself to deal with this now evil frisk in a unexpected way

    Series
    Language:
    English
    Words:
    746
    Chapters:
    1/1
    Kudos:
    11
    Hits:
    789
  15. Tags
    Summary

    Follow the story of a Gender-neutral reader and their friend as they help Frisk through the Underground, trying not to die, of either laughter or hunger, or from bloodshed to many times.

    ....What's wrong with the reader you ask? Who knows.

    Language:
    English
    Words:
    Chapters:
    1/1
    Kudos:
    3
    Hits:
    140
  16. Tags
    Summary

    Most people would have gone for help.
    Most people would have dropped and prayed.
    Most people would have turned and ran.
    Sans was not most people.

    In a city where crime is commonplace and danger abounds, one should always stay alert and on their toes. On one moonlit night, Sans, a jaded mercenary with too many vices and a chip on his shoulder, gets a little too curious for his own good, and now his whole life gets flipped upside down.

    As it turns out, sometimes there's a very good reason to be afraid of the dark.

    Language:
    English
    Words:
    30,235
    Chapters:
    2/?
    Comments:
    9
    Kudos:
    42
    Bookmarks:
    10
    Hits:
    1,041
  17. Tags
    Summary

    *A dark figure towers over you
    *There is no escape
    *Render!Sans blocks your way

     

    _______________________________________________________________________________________
    "You'll be the hero of our generation."
    Killer sighed and glared at his boss.
    "Do I get a choice?" The goopy skeleton chuckled.
    "No." Killer tilted his head.
    "Ok then." He replied, stepping forward slightly. "I'll do it then."
    The skeleton standing before him smiled, his smile grew so wide that Killer thought Nightmare was going to split his face open.

    Language:
    English
    Words:
    1,234
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    8
    Hits:
    237
  18. Tags
    Summary

    The fallen human had had enough of being messed with. Having their body possessed every time they entered the underground was worse than any nightmare. But once they made the choice to fall, falling was always their fate. Perhaps, though, they could change something, just before they lose control...

    Language:
    English
    Words:
    426
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    18
    Bookmarks:
    1
    Hits:
    264
  19. Tags
    Summary

    Red and Paps return from the Underfell universe but something, or rather someone, unexpected happens.

    Won't make sense without reading "I'm crazy but you're not sane either"

    Series
    Language:
    English
    Words:
    4,897
    Chapters:
    7/7
    Comments:
    9
    Kudos:
    75
    Bookmarks:
    3
    Hits:
    1,488
  20. Tags
    Summary

    Flowey finds a way to not only get Undyne and Alphys together, but married. Yet when he finds it boring, and decides to find a way to test their bond, he ends up regretting it later.

    Series
    Language:
    English
    Words:
    4,736
    Chapters:
    1/1
    Comments:
    35
    Kudos:
    43
    Bookmarks:
    5
    Hits:
    674

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