1 - 20 of 38 Works in True Lab (Undertale)

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  1. Tags
    Summary

    The now adult Frisk is suffering from nightmares about the day she defeated Asriel and failed to save him from turning into the evil Flowey once more. Once she tells her worries to her closest friend, Sans, they develop an idea to stop the nightmares once and for all: return to the monster world and retrieve flowey in hopes that Alphys can return him back into his real self. In the meantime, Sans and Frisk grow closer and closer and develop new feelings for each other.

    Language:
    English
    Words:
    160,527
    Chapters:
    66/66
    Comments:
    776
    Kudos:
    1018
    Bookmarks:
    85
    Hits:
    30024
  2. Tags
    Summary

    If failed experiments, warped timelines, and emotional family drama weren't trouble already, a seventh human has fallen to tip the balance of fate one way or another. And if one human wasn't bad enough, there may be someone else looking to take a hand in the underground's fate, at least where it concerns a couple of skeletons...

    The continuing of an Alternative Timeline of Zarla's Handplates in which the interference of the Ukagaka Human causes Gaster to reassess his priorities.

    Series
    Language:
    English
    Words:
    23,646
    Chapters:
    6/?
    Comments:
    14
    Kudos:
    17
    Bookmarks:
    1
    Hits:
    309
  3. Tags
    Summary

    Having left the lab behind, the skeletons try to build a new life for themselves, but sins of the past and fears for the future have a way of lingering...

    The continuing of an Alternative Timeline of Zarla's Handplates in which the interference of the Ukagaka Human causes Gaster to reassess his priorities.

    Series
    Language:
    English
    Words:
    36,119
    Chapters:
    9/9
    Comments:
    25
    Kudos:
    31
    Hits:
    427
  4. Tags
    Summary

    What would happen if the dadster and the meanster met, along with their sons and expirements?
    The one that loves and the emotionless husk...
    The reliever and the torturer...
    The father and the scientist...

    Language:
    English
    Words:
    16,539
    Chapters:
    15/15
    Comments:
    40
    Kudos:
    160
    Bookmarks:
    20
    Hits:
    3248
  5. Tags
    Summary

    As Frisk reread Alphys' note for the fifth time, they wondered just what she could have done that was so disquieting that she couldn't directly confess to everyone.

    But before they could board the elevator and discover for themselves, they heard a voice.

    "Darling! Wait!"

    ...

    (The one where Mettaton decides to accompany Frisk through the True Lab.)

    Language:
    English
    Words:
    4,034
    Chapters:
    1/6
    Comments:
    3
    Kudos:
    12
    Bookmarks:
    1
    Hits:
    154
  6. Tags
    Summary

    It seemed easy - just create a few test subjects in a lab and do whatever was necessary to bring down the barrier. But when a human threatened the brothers, suddenly they stopped seeming like subjects...

    An Alternative Timeline of Zarla's Handplates in which the interference of the Ukagaka Human causes Gaster to reassess his priorities.

    Series
    Language:
    English
    Words:
    29,440
    Chapters:
    8/8
    Comments:
    6
    Kudos:
    46
    Bookmarks:
    6
    Hits:
    603
  7. Tags
    Summary

    Alphys investigates some strange noises coming from the True Lab. Christmas Gift for Sandbirde.

    [Join my Discord server!]

    Series
    Language:
    English
    Words:
    2,474
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    8
    Bookmarks:
    1
    Hits:
    220
  8. Tags
    Summary

    you jumped into the underground, made your way through the ruins, and then you met sans. he likes what he sees and decides he's gonna keep you around for his own amusement. He's a nasty lil skeleton who never fails to remind you that he owns your ass and you kinda like it, but you also really don't. Consent as well as whether you like him or not is kinda a blurred, greyish area. Nevertheless, shenanigans and angsty love feels ensue

     

    this will be shamelessly smutty and kinda twisted with nihilistic ideologies, dark humor and a fucked up lack of morals because I like that shit.

    Language:
    English
    Words:
    98,166
    Chapters:
    41/?
    Comments:
    424
    Kudos:
    660
    Bookmarks:
    93
    Hits:
    16622
  9. Tags
    Language:
    English
    Words:
    1,270
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    32
    Hits:
    235
  10. Tags
    Summary

    DETERMINATION melted monsters.

    Perhaps that was what made it so very,
    very,
    very interesting.

    Language:
    English
    Words:
    1,463
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    10
    Hits:
    111
  11. Tags
    Summary

    Underfell Alphys' perspective on the creation of the Amalgamates and Flowey, taken from her logbook and transcripts of audio recordings.

    A gift for Desceeee, who wanted to see a fic about Underfell Alphys.

    Series
    Language:
    English
    Words:
    2,529
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    14
    Bookmarks:
    2
    Hits:
    170
  12. Tags
    Summary

    Chara and Frisk have been coexisting for a while now, neither of them really ever getting what they want, the ending they want, without the other intervening. Reset after reset they've endured, falling into one of two routines depending on who is in control.
    Only it isn't just them enduring these constant loops. When a certain skeleton snaps under the weight of never-ending resets, something Chara hasn't felt for a long time begins to stir. And he isn't about to give into it so easily.
    (THIS IS VERY OLD,,, I'M VERY SORRY)

    Language:
    English
    Words:
    47,636
    Chapters:
    22/?
    Comments:
    273
    Kudos:
    374
    Bookmarks:
    48
    Hits:
    8491
  13. Tags
    Summary

    FRISK.CHR failed to load...

    Language:
    English
    Words:
    1,056
    Chapters:
    1/1
    Kudos:
    2
  14. Tags
    Summary

    You fall into the underground, haunted by visions of death and a shadowy figure.
    You realise you have more to do with monsters than you could ever imagine.

    Language:
    English
    Words:
    726
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    2
    Bookmarks:
    1
    Hits:
    34
  15. Tags
    Summary

    Times of heat can reduce even the most gentlemanly of monsters to desperation, animalistic in their lust. Mettaton can hardly believe that Papyrus could be in such a state; of course, he's intrigued.

    Language:
    English
    Words:
    2,753
    Chapters:
    1/1
    Comments:
    8
    Kudos:
    88
    Bookmarks:
    9
    Hits:
    1364
  16. Tags
    Summary

    Deep in the UNDERGROUND, a mad scientist tests his experiments. These experiments are growing tired, and wish for freedom.

    And soon, they will have it.

    Series
    Language:
    English
    Words:
    1,248
    Chapters:
    4/?
    Comments:
    6
    Kudos:
    24
    Bookmarks:
    3
    Hits:
    409
  17. Tags
    Summary

    Random prompts that I don't remember where I got and random small ideas i got out of no where

    Some of these chapters have things canon to the AU. I will list the canon parts at the end of each chapter.

    Series
    Language:
    English
    Words:
    1,548
    Chapters:
    8/?
    Comments:
    8
    Kudos:
    14
    Bookmarks:
    1
    Hits:
    450
  18. Tags
    Summary

    There once was a Tale of a mortal among the fae with a soul bright with a belief in all.

    Series
    Language:
    English
    Words:
    9,659
    Chapters:
    3/3
    Comments:
    5
    Kudos:
    32
    Bookmarks:
    1
    Hits:
    258
  19. Tags
    Summary

    This world is unlike any you've ever been to. But, a world in need is still a world in need. You would rather risk it all to keep any world from disappearing completely than sit back and watch it blink out of the sky. But, is this world worth saving? Or will you help it destroy itself?

    Language:
    English
    Words:
    2,730
    Chapters:
    1/?
    Kudos:
    8
    Bookmarks:
    2
  20. Tags
    Summary

    After the horrific "accident" that fused Sans and Papyrus into one of the nightmarish Amalgamates, Alphys is at a loss for what to do with... it? them? him? She is desperate to hide the evidence of what she's done, but one scared scientist can't deal with a spaghetti-loving, semi-sentient monster all by herself. Undyne has stepped up to share the responsibility of caring for the thing that her friends have become... but as time passes, Undyne is becoming more desperate to get Papyrus and Sans back. Desperate enough to attempt a risky procedure to separate the Skelebros in the hopes of restoring them to their former selves.
    Will this work? Maybe. Will this be horrifying? Definitely.
    Based off Zarla's Sixbones AU.

    Series
    Language:
    English
    Words:
    32,825
    Chapters:
    19/19
    Comments:
    372
    Kudos:
    378
    Bookmarks:
    40
    Hits:
    5919

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