1 - 20 of 179 Works in Alternate Universe - Gaster Blaster (Undertale)

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  1. Tags
    Summary

    The story of three brothers and a flame all trying to find their place in the world.

    Language:
    English
    Words:
    27,421
    Chapters:
    6/?
    Comments:
    24
    Kudos:
    37
    Bookmarks:
    5
    Hits:
    382
  2. Tags
    Summary

    REWRITE OF "ALONG CAME A SPIDER" (2015)

    When 12 year old Tuffet is thrown out of her house due to some ridiculous Spider Tradition, she takes to living on her own without much fuss. But how will she handle her new, independent life when two shape shifters just kinda... take up her couch? She lets them in with open arms, but they seem hesitant. They're clearly hiding things, but living under one roof, some trust has to build... right?

    Language:
    English
    Words:
    32,152
    Chapters:
    20/20
    Comments:
    21
    Kudos:
    153
    Bookmarks:
    25
    Hits:
    2617
  3. Tags
    Summary

    Following a small personal revenge on the part of Alphys, Sans begins to rejuvenate more and more until being a baby.

    Language:
    English
    Words:
    3,441
    Chapters:
    4/?
    Kudos:
    11
    Bookmarks:
    1
    Hits:
    331
  4. Tags
    Summary

    Suite à une petite vengeance personnelle de la part d'Alphys, Sans rajeuni de plus en plus jusqu'à être un bébé.

    Language:
    Français
    Words:
    9,174
    Chapters:
    9/?
    Hits:
    8
  5. Tags
    Summary

    Everything was so stupid. They could help each other. It was even the point of that whole fucking evening! But here they were, sitting lamely on that couch, unable to do the first move because they were too scared of what they would see in each other soul.

    Series
    Language:
    English
    Words:
    8,458
    Chapters:
    2/2
    Comments:
    8
    Kudos:
    51
    Bookmarks:
    5
    Hits:
    581
  6. Tags
    Summary

    Co-Creators: StormyFictioners and TempestJewel

    Multiverse Surface AU (Original Sans fixes machines and brings them to the surface) Undertale is the only one of the Universes that have reached the surface.

    Summary:
    Stretch is blind. While everyone in his Universe knows this, he doesn’t want their Alternates to know about his condition. Blue is hesitant to agree with Stretch’s secret, but reluctantly promises not to tell and let Stretch tell them himself.

    Basically a cross AU shipping party that will eventually become smut induced love/angst/fluff. READ THE TAGS, enjoy the story.

    Language:
    English
    Words:
    90,617
    Chapters:
    14/?
    Comments:
    220
    Kudos:
    275
    Bookmarks:
    42
    Hits:
    4029
  7. 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:
    13,012
    Chapters:
    26/?
    Comments:
    24
    Kudos:
    31
    Bookmarks:
    5
    Hits:
    721
  8. Tags
    Summary

    You're a broke college graduate. You had a job previously and was unjustly given a pink slip with no way to pay for anything including rent and groceries. You are having to survive on the last of your funds. It's been a couple of months since you lost your job. You're looking endlessly for work, as your hopes are answered with a gruff voice and a proposal of a job that you wished in your wildest dreams that you could get it.

    Will you take his offer? (Y) or (N)

    Language:
    English
    Words:
    10,882
    Chapters:
    5/?
    Comments:
    23
    Kudos:
    88
    Bookmarks:
    16
    Hits:
    2086
  9. Tags
    Summary

    The barrier is finally broken, and at last all of monsterkind are free to walk on the surface.
    Again.
    Sans the Skeleton is skeptical. Why bother getting excited for something that's just going to reset? This is not the first time the barrier is broken, and probably not the last. He feels the need to take a break for everyone else's enthusiasm and wanders to the ruins where he encounters a ghost of his past. The result of that meeting is something he has been hiding for a long time and that he's determined to keep hidden.

    Language:
    English
    Words:
    77,956
    Chapters:
    17/?
    Comments:
    144
    Kudos:
    464
    Bookmarks:
    55
    Hits:
    10087
  10. Tags
    Summary

    Geno's life had already been difficult, but when a cloaked stranger stumbles upon his doorstep one night things seem to only get worse. Hiding his feral side had been hard enough, but now this idiotic vampire won't get off his tailbone!

    An AfterDeath fic in wich Reaper is A vampire prince and Geno is a werewolf. Sounds pretty cheesy.

    Language:
    English
    Words:
    3,686
    Chapters:
    1/?
    Comments:
    6
    Kudos:
    27
    Bookmarks:
    5
    Hits:
    193
  11. Tags
    Summary

    "The skeleton brothers of Snowdin have a good life--a nice house, friends, good food, good jobs--each other. Too bad their past has come back to bite them."

    -

    UndertaleThingem's take on the classic Gaster Blaster AU.
    Canon music from the Undertale soundtrack has been added as background music to accompany the story. This is an ongoing project.

    (The first two chapters were recorded with the Blue Yeti microphone. Future chapters were recorded with the Audio Technica 4040.)

    Language:
    English
    Words:
    23
    Chapters:
    3/22
    Collections:
    1
    Comments:
    8
    Kudos:
    12
    Bookmarks:
    3
    Hits:
    314
  12. Tags
    Summary

    Frisk plays a game of chase with Papyrus' special attack.

    Series
    Language:
    English
    Words:
    7
    Chapters:
    1/1
    Collections:
    1
    Comments:
    3
    Kudos:
    1
    Hits:
    46
  13. Tags
    Summary

    In an attempt to see if Sans has a special attack like his brother, Undyne challenges him to a friendly fight. Things go catastrophically wrong.

    Series
    Language:
    English
    Words:
    9
    Chapters:
    1/1
    Collections:
    1
    Comments:
    1
    Kudos:
    5
    Hits:
    86
  14. Tags
    Summary

    In an attempt to see if Sans has a special attack like his brother, Undyne challenges him to a friendly fight. Things go catastrophically wrong.

    Series
    Language:
    English
    Words:
    9
    Chapters:
    1/1
    Collections:
    1
    Comments:
    1
    Kudos:
    9
    Hits:
    81
  15. Tags
    Summary

    After having been missing for a few days, Sans is finally reunited with his brother and friends. Teasing ensues.

    Series
    Language:
    English
    Words:
    2,763
    Chapters:
    1/1
    Kudos:
    32
    Bookmarks:
    1
    Hits:
    238
  16. Tags
    Summary

    Just a few chapters based on the scenario of 'what if' the various Papyri were suddenly afflicted with Gaster Blaster Syndrome. In other words, it's purely my transformation kink being thrust upon these poor skelly bois.

    Language:
    English
    Words:
    6,033
    Chapters:
    2/4
    Comments:
    7
    Kudos:
    38
    Bookmarks:
    5
    Hits:
    286
  17. Tags
    Summary

    Blue is pretty sure he'd know if he and his brother were off tearing the forest a new one, but he's had weirder days.

    Language:
    English
    Words:
    11,228
    Chapters:
    13/13
    Comments:
    114
    Kudos:
    171
    Bookmarks:
    29
    Hits:
    2164
  18. Tags
    Summary

    Written for the Banned Together Bingo 2020

    Frisk's journey to Snowdin in the TrioBlasterSets AU. They had made mistakes in the past, terrible, terrible mistakes. But now they are determinated to make it right.

    (Just the game has changed a lot from what they can remember since they accidentally broke the universe. Oops)

    Series
    Language:
    English
    Words:
    8,235
    Chapters:
    2/2
    Collections:
    1
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    66
  19. Tags
    Summary

    He needed to find a place with better hunting for his brother's sake. Unfortunately, there is a door in his way and he doesn't know how to get past it.
    She was alone and feeling herself slipping into endless sadness. Yet, she has a mission that she is determined to not give up on.

    Language:
    English
    Words:
    28,303
    Chapters:
    11/?
    Comments:
    82
    Kudos:
    210
    Bookmarks:
    41
    Hits:
    2737
  20. Tags
    Summary

    1-S never felt love in his life, only pain and misery. That is until the scientists throw in someone that looks like him, sparking a glime of hope. But when the scientists start to do the same things that they'd done to 1-S onto 2-P, 1-S takes the biggest risk of his life and escapes into a whole world unknown to both of them. What will they find in this unknown world, and what truths will they find out about?

     

    Hello! This is my first story that i'm posting here! there might be some misspelled words and rushed events but i do hope you enjoy it! I did originally post this on my deviantart so some of the first chapters will be coming out faster then the later ones. With that I hope you enjoy!!^^

    Language:
    English
    Words:
    18,854
    Chapters:
    8/?
    Comments:
    15
    Kudos:
    26
    Bookmarks:
    7
    Hits:
    721

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