Underverse Stories

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975 Stories

  • I Am the 90's Nightmare (Underverse) by NeighborGirl
    NeighborGirl
    • WpView
      Reads 13,161
    • WpPart
      Parts 14
    Fresh has found a way to survive in one body to avoid infecting others and starting a pandemic using Determination. Though he still cannot feel emotions, somewhere deep inside his mind is an obscure loneliness, knowing he doesn't belong. He comes from the other side of the screen, the controlling side of reality where monsters don't exist. But he soon realizes that he is not the only one who doesn't belong, and now he is Determined to save reality.
  • 𝐗𝐄𝐍𝐀𝐂𝐈𝐎𝐔𝐒 | xᴛᴀʟᴇ x ʀᴇᴀᴅᴇʀ by your_closet69
    your_closet69
    • WpView
      Reads 11,549
    • WpPart
      Parts 16
    [discontinued] [Rewrite 100% Confirmed] "𝐈 𝐰𝐚𝐧𝐭 𝐚 𝐜𝐡𝐚𝐧𝐠𝐞 𝐭𝐨 𝐡𝐚𝐩𝐩𝐞𝐧!" "𝐈 𝐣𝐮𝐬𝐭. . . 𝐝𝐨𝐧'𝐭 𝐤𝐧𝐨𝐰 𝐰𝐡𝐞𝐧 𝐢𝐭'𝐬 𝐠𝐨𝐢𝐧𝐠 𝐭𝐨 𝐡𝐚𝐩𝐩𝐞𝐧." 💜 𝐈𝐍 𝐖𝐇𝐄𝐑𝐄 a human is born into the world of a perfectionist.
  • Horrorshift... X reader by StoryshiftingSpirit
    StoryshiftingSpirit
    • WpView
      Reads 3,767
    • WpPart
      Parts 15
    Its an x reader, but its not romantic....Time to SHIFT our mood for a HORRORfying world.... No images I may find are mine, I just look it up on google. Horrorshift isnt mine, Undertale belongs to Toby Fox, you are the sacrifice, and I...Am the author.
  • My Mean Lover (Crossmare/Nightcross) by _QuartzCrysta_
    _QuartzCrysta_
    • WpView
      Reads 35,659
    • WpPart
      Parts 10
    Cross's AU has been destroyed and now he is left in the void. He was left alone and upset. Chara wasn't helping at all. Will he be alone. Nightmare was doing his rounds when he came a-cross, Cross. He offered him help but soon fell for him. He can't tell his feelings and will have to hide it but will he actually have the bones to tell Cross his feelings? Find out now in My Mean Lover.
  • MoreTale+ / 🇺🇸 English version! by Vik_XPY
    Vik_XPY
    • WpView
      Reads 75
    • WpPart
      Parts 6
    Not every story has a happy ending. Some... are forgotten before they even end. Abandoned characters. Incomplete worlds. Destinies that never reached their conclusion. But... what if there were a place where all of this could continue? Legend has it that there are two apples: the Apple of Positivity... and the Apple of Negativity. Two opposing forces. Two fates already known. But no one speaks of the third. The one that should never have existed. In a refuge hidden between universes, where not even the guardians can see... broken stories find a new home. Or remain trapped... between what they were... and what they never came to be. An original AU inspired by Undertale, where even the forgotten can still change everything.
  • ~One More Time, I'll Be Fine~ Flowerfell Sans x Suicidal Reader by CelestialWulfz66677
    CelestialWulfz66677
    • WpView
      Reads 192
    • WpPart
      Parts 5
    ⚠️ WARNING THE TW FOR THIS BOOK GETS DEEP ⚠️ Life always seemed to hate Y/N.... They did everything right. From helping homeless people, to donating what little extra money they had left over to charity. However, everyone still hated them. Y/N had no idea why. So one day they climbed the mountain of Mt. Ebbot, hoping the legends were true. They saw the entrance of the Underground and decided to jump...This is where YOUR story as the reader begins... DISCLAIMER NONE OF THE ART I USED IS MINE UNLESS I SAY SO. ALSO FLOWER FELL AND THE MULTIVERSE DOES NOT BELONG TO ME.
  • 𝐖𝐀𝐍𝐃𝐄𝐑𝐈𝐍𝐆 𝐒𝐎𝐔𝐋 ; underverse by D1NGLEB3ERRY_B3AR
    D1NGLEB3ERRY_B3AR
    • WpView
      Reads 572
    • WpPart
      Parts 4
    (Published to the Editor's Account as the New Author) *inserts cool decription* ஓ๑♡๑ஓ ➸ Underverse belongs to Jakei. ➸ Undertale belongs to Toby Fox. ➸ All the AU's mentioned here respectfully belong to their creators and communities. ➸ I only own [Name] and their part of this story. ➸ [Name] will be written with a gender-neutral idea, using they/them. ➸ This fanfiction will include mentions of blood, death, and more to be added on as the story progresses. ➸ This is purely made out of boredom and for your entertainment. ➸ XTRA: Published Version from the Editor/New Author, me!
  • Insanity!Verse Info by Z-Mixed
    Z-Mixed
    • WpView
      Reads 200
    • WpPart
      Parts 15
    This is a verse idea I had None of this art is mine
  • Sonic Boom Roleplay Book by TrojanKing57
    TrojanKing57
    • WpView
      Reads 8
    • WpPart
      Parts 1
    This is a roleplay book about the more comedic versions of Sonic The Hedgehog and his friends, Sonic Boom
  • Broken Mind (Bad End Friends x Reader) by RedPyromaniac
    RedPyromaniac
    • WpView
      Reads 10,305
    • WpPart
      Parts 13
    That's it... You've finally done it... You killed Everybody... You don't know how you've done it... all you remember is all the scream of agony... but most of all... the scream of you're twin sister ()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()()() im gonna add a lot of characters and im also thinking i'll add some AU's. ♤WARNING♧ •A lot of cringe •Trigger warning •gore •swearing
  • UNDERVERSE by nightmareking612
    nightmareking612
    • WpView
      Reads 128
    • WpPart
      Parts 9
    You know undertale? Well think of that but there's 999999999999999999999999999999999 other undertales but different... Oh and a bitching perfectionist is the villain. (0_0)...
  • Glitchtale ATF (After The Future) by WingDingWhite
    WingDingWhite
    • WpView
      Reads 704
    • WpPart
      Parts 102
    The future of this corrupt timeline DISCLAMER All the main characters belong to Camila Cuevas. THE ADDITIONAL CHARACTERS ARE MY CREATION to give my idea on the future of Glitchtale having said that I hope you like it if so I invite you to follow me and leave a positive feedback ;3
  • Truth or Dare Underverse (Lol discontinued XD [COMPLETE ✔]) by tRaSh_4U
    tRaSh_4U
    • WpView
      Reads 17,908
    • WpPart
      Parts 102
    !!! WARNING THIS BOOK IS DISCONTINUED!! WE ( Aurorawe and tRaSh) HAVE A NEW ASKBOOK! IF YOU'D LIKE TO ASK OR DARE CHARACTERS PLEASE GO TO THAT BOOK CALLED "Ask or Dare Undertale AUs" but please do read this if you'd like...also- this book is old. As old as my account do no hate or anything qwq - tRaSh !!! Sans: Please make us suffer through your dare and make us tell our dark secrets, through making us tell the truth Author: Uhh...Sans Sans: Yeah? Author:...Stop making the potential reader pity you! Sans: Yeah, Yeah, Whatever I'm going to take a nap till this book gets interesting... Author: Please come in and play this game with us!
  • Ominous Creations (OC's) by nightmareking612
    nightmareking612
    • WpView
      Reads 403
    • WpPart
      Parts 7
    (Celever, huh? Cause how they're created is ominous and their creations???)
  • PARACOSM ␈ ᵇᵃᵈ ˢᵃⁿˢᵉˢ ˣ ʰᵉᵃˡᵉʳ ʳᵉᵃᵈᵉʳ by yourwifeAn
    yourwifeAn
    • WpView
      Reads 8,645
    • WpPart
      Parts 12
    "the healer likes t' sleep. like, a lot." Axe looks at the sole female AND human member of Nightmare's subordinates. She was only ever awake for about 8-10 hours a day, rarely ever 12, it was both fascinating and irritating at the same time. He was damn sure humans would be awake for more hours than that, he even asked Murder at the time if it was normal. Said skeleton didn't give a single care though, his words: "who cares, makes her more tolerable. 'sides she gets her job done." The cracked skeleton just couldn't shake off the feeling that there was more to it than meets the EYE. ━━━PHOTO CREDITS: Whale鯨豚 [@Whale5511] on X! ━━━MOST NOTABLE RANKING: #1 in sansxreader, horrortale, something new and badsanses on 23/12/2025 #1 in undertale on 25/12/2025 #3 in bittersweet on 24/12/2025 #5 in reader on 24/12/2025 #19 in sans on 23/12/2025 ━━━━━━━━━━━━━━━━━━ DATES PUBLISHED: 001 ━━ July 29th of '25 002 ━━ July 30th of '25 003 ━━ August 1 of '25 004 ━━ August 3 of '25 005 ━━ August 6 of '25 006 ━━ August 8 of '25 007 ━━ November 8 of '25 008 ━━ December 22 of '25 009 ━━ December 23 of '25
  • Conform; An fgod error story by CharlieEatsWaffle
    CharlieEatsWaffle
    • WpView
      Reads 282
    • WpPart
      Parts 2
    Error needed help. He didn't want it, but he needed it. So, when Ink finally captures him, he tries to help him. To change him. But you can't change what was already twisted so far from originality that it's reached its limit. Fate had a hand in that. Error knows this as well as he knows his own name. But maybe...Ink could change things for him.
  • Of X's and Moons | The Ultimate Crossmare Fanfiction by MOVED-ACC-01
    MOVED-ACC-01
    • WpView
      Reads 1,079
    • WpPart
      Parts 6
    A crossmare fanfic with all the fluffiness and action you will ever want !
  • A fight for a berry by Lefluffster
    Lefluffster
    • WpView
      Reads 12,127
    • WpPart
      Parts 32
    I walked through the halls, then stopped. I peered into the eternal darkness, trembling. I could only stand still. I shook, hearing screams of agony. I could only stay there, until dust drifted past. "What have I done. ." I was cut off from my thoughts. "You're not supposed to be here~" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This is an undertale multi-verse story. Blue loves all his friends platonically, but when will he realize he loves one of them more than words? {COARSE LANGUAGE} {GORE} {SELF-HARM} {Depression.} Btw guys, this is my first story. And cover art does not belong to me, I kinda suck at drawing. Have fun reading this story! -Fluff
  • EXULTED IN DREAMS by AtozSystem
    AtozSystem
    • WpView
      Reads 276
    • WpPart
      Parts 7
    undertale au where the humans lost the war.
  • (ON HOLD)CLINGING TO SANITY, OR EMBRACE THE FANTASY? [Dreamtale x Child!Reader] by Sashamaeoliver
    Sashamaeoliver
    • WpView
      Reads 160
    • WpPart
      Parts 3
    you're inspired by that Alice Villain song By Lynda the bard. and you're younger than dream n nightmare so ya^^ bah byeee (my stupid ass accidentally logged out from my other acc where this story just started bro)