1 - 20 of 4,550 Works in Undertale Pacifist Route
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It's six years after the Emergence, and while most of the monsters decided to stay close to the mountain on the west coast, slowly but surely a good few made it over to the opposite coast and settled down in Washington DC. Besides the King and Queen and their human child - relocated to the political center of the US for obvious reasons, you mostly see dogs, bunnies, and cat monsters integrating themselves among your coworkers and neighbors. Things aren't perfect, but they're improving day by day.
You have a stable job as a PR and Marketing Expert, a handful of close friends, and a stable and predictable routine.
When you randomly meet a brand new type of monster in town while late night shopping, you can't help but be frightened of him. After all- he's literally a living skeleton! Embarrassing, but at least you'll never have to see him again... right?
What happens when fate has other plans, and you just. keep. running into each other?
Let's find out.
Series
- Part 5 of The Butterfly Effect 💚💛🧡💜💙🩵❤️
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undertale fic/au ideas !!! by silverstormsxx
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
07 Sep 2025
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every one is free to use as long as you credit me :D
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Making A Monster by absurdmagewrites
Fandoms: Undertale (Video Game), Underfell-fandom, Underswap-Fandom, Swapfell-Fandom, Fellswap-Fandom, Fellswap Gold-Fandom, Horrortale-fandom, Crafttale-Fandom, Seaswap-Fandom
07 Sep 2025
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Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.
A skeleton monster to be precise.
With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.
What a surprise for you when you find out that someone does. A lot of someones.
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ACT II: A Cage With Human Soul and Parts by AMX004_Qubeley
Fandoms: Undertale (Video Game), Deltarune (Video Game)
07 Sep 2025
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Two years have passed since the Thrash Machine Incident nearly shattered the Monster Kingdom's fragile peace with humankind. Tensions have begun to mount between new and old political factions within the kingdom, but when Asriel Dreemurr returns from his travels abroad, politics are the least of his concerns.
Deep within the mountain, where most monsters no longer care to tread, something is waiting.
Series
- Part 4 of Megalo|Vania
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I like the head cannon of Sans having raised Papyrus. I also like the head cannon that all other skeletons died when the Barrier went up. So we all know PTA Sans, the punning and protective skeleton who join the PTA for Frisk. The thing is, in what I've seen, he acts experienced.So I like to think that he did the PTA before, for Papyrus. He had to make skeleton needs and growth and customs known to monsters who had never even seen a skeleton before. And we know how much Sans loves his brother, so he was probably very dedicated. Maybe he transferred some of that dedication to the human PTA.
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Twin Runes by Thealmoghtbeyonder2099
Fandoms: Undertale (Video Game), Deltarune (Video Game)
07 Sep 2025
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Twin Runes es un AU cómico en su mayoritariamente alegre centrado en los universos Deltarune y Undertale. Una fuerza desconocida ha provocado que aparezca un punto de conexión entre los dos universos, lo que hace que Frisk y la molestia fantasmal Chara tropiecen en la vida de Kris en uno de sus muchos reinicios (para gran disgusto de Kris). Se produce un caos que rompe el juego.
La traducciones del "los pájaros y abejas" hasta el "No sirve pa' nada" no son mías. Del resto de traducciones si son de mi autoría
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GLITCHTALE.exe by PseudoAuthor (ElGato17_1)
Fandoms: Undertale (Video Game), Glitchtale - Fandom
06 Sep 2025
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Tudo começa e termina em uma rota onde piedade já não é uma opção viável. De novo, e de novo, e de novo, você já está fazendo este caminho por rotina, parece que outra vez você vai acabar seu jogo sem descobrir uma novidade sequer, mas um novo caminho de eventos aparece de repente, abrindo novas rotas enquanto desfia a linha do tempo.
Series
- Part 1 of GLITCHTALE (1)
- Language:
- Português brasileiro
- Words:
- 2,579
- Chapters:
- 1/?
- Hits:
- 2
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Someone Really Cares About You. by Meowzerz_Oh_6
Fandoms: Undertale (Video Game), Deltarune (Video Game)
06 Sep 2025
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Sans Undertale struggles to adapt and move on while integrating on the surface.
The troubles of his past haunt him, the burden of his old home, coming from a different world, being aware of resets, the trauma is all messing with his head.
He’s already fallen into depression and other darker thoughts.
Will he succumb into hopelessness, or will he realize that people care about him in time?
OR
What if Sans Undertale is actually from Deltarune? What will a man with such knowledge and burdens do? Will he stay determined? Or will he succumb into the despair that the universe threw one thing after another at him, as he tries to move on in a permanent happy ending.
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RE:Undertale by WrestleZero
Fandoms: Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime), Undertale (Video Game), Earthblade (Video Game)
06 Sep 2025
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After dying from The Great Rabbit a second time, Subaru woke up in a field of flowers.
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Undertale Purple - Perseverance by AnonymousWriter08
Fandoms: OMORI (Video Game), Undertale (Video Game)
06 Sep 2025
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A long time ago... humans and monsters lived in harmony. Until war broke between the two races.
The humans were victorious and sealed monsterkind deep underground with a powerful spell, that could only be broken with the power of seven human souls.
This was the tale of Mt. Ebott, and the tale trascended into legend. Those who climbed the mountain, weren't seen again.
And so, begins the tale of the fifth human soul to fall into the land of legend, to fall... into the Underground.
This is the tale of the Purple Soul... Sunny Suzuki.
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After playing undertale late at night and being sucked through your computer to that universe, you and your bone brigade have to figure out what it's like to live in a new world. And maybe try to get you home. If there's time.
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Top of the class, bottom of the heart by reincarnatedfrog
Fandoms: Undertale (Video Game)
06 Sep 2025
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Monsters have lived alongside humans for a decade now, and you’ve dedicated your studies to understanding them. But on the first day of your third semester, a scoreboard in the university’s new building throws you off balance—because the top name belongs to someone you’d have sworn wasn’t even trying to stand at the top.
Get to know a strange human with an even stranger family and friends, and experience chaos across both the surface and the underground in this little writeup of mine!
Story mostly exists cuz I am a Chara simp and there's not enough slow burn out there that gets heated later on ngl. -
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The Seven (Plus Chara) have done it; they've ended the imprisonment of all monsters. With Frisk as their ambassador (and Papyrus as mascot), things are sure looking up!
But in the background, things are at play, events that could threaten everyone's happy ending.
After all, just because one story ends it does not mean the Tale has.
Series
- Part 2 of Hall of the Seven
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As the Dust settles…(CRK x Dusttale.) by Theendcomesforall6724
Fandoms: Undertale (Video Game), Cookie Run (Video Game)
05 Sep 2025
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“How much would it take for even the worst of people to change? For some, it’s for another to pull off the blinds over their eyes. For others, it’s for someone to beat the soul out of them.
Sans was faced with the former by a human who fell into the underground. Killing everyone there over and over again until Sans decided to fight fire with fire. Doing his own genocide route in order to finally stop the human in their tracks.
But once the human helped him take care of the true evil of all these genocides, they had a mutual agreement to be more…pacifist moving forward. And so, they RESET. But oddly enough, the RESET had Sans sent somewhere more…Sweet. But with fallen heroes trapped inside trees and darkness all around.
But the question remains, Will Sans have enough DETERMINATION to SAVE them and fight through the dark? Or will his FIGHT not be enough after all? But no matter the answer…He’ll make sure to have a FUN time…”
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System Error: Accidental Acquisition of Children by Frikisbits231
Fandoms: Undertale (Video Game)
05 Sep 2025
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Error slid down, glued to the tree, his back to the ground, into the lush green grass on the ground. Later, he'd take a look at his current situation and possibly eliminate the place without a problem. Meanwhile, Error was resting, leaning against this comfortable, curvy tree, closing his eyes to feel something, something of the place.
Feel... the familiar ambient magic?
Still no monsters, humans, or standard souls around. Well, no one could hurt him if he got some rest, right?
This time, he mentally prepared himself and repeated the safety tests he felt like a mantra so he could get some rest.
He fell asleep shortly after.
…
Sweetness with hints of security, calm, and the tranquility of dawning rest captured his senses. Something... familiar. Like... like chocolate melting on his tongue. He didn't know how he recognized that either. Still, he pulled the tongue out of his space, to capture it. He caught the sensations, almost becoming overwhelmed by them.
(O: The one where Error acquires an abandoned baby bone, which is, of course, his offspring too, yay...)
Series
- Part 3 of Glitches & Errors Fics
- Part 2 of Random Writing
- Part 1 of ❤️🩹💞 Caring for Babybones 💞🥰
- Part 1 of Oh, look at a fanfic with one of the fanchilds!
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Unwilling to kill to claim a soul—or to strike down the monster king to escape—Frisk chooses to stay underground. The monsters crown her their princess, and she grows up among them, a symbol of hope and peace.
But shadows from the past refuse to stay buried.
When the fragile peace begins to crack, Frisk must face what she's tried to forget. Alongside her childhood friend, Sans, she sets out to protect the only home she's ever known—and the people she loves—from a threat that spans timelines.
With original art. Inspired by Seventh Soul by 8TheKat
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Frisk, suffering issues being an ambassador for monsters, fucks with Chara in order to get away from these problems.
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Perhaps this was a good sign. A step in the right direction and away from his downwards spiral of uuuggghhhh. Because the way Mettaton saw it, he now had one of two options.
One: retreat to the lukewarm comforts of a lumpy couch until he became one with the cushions and waited until the inevitable heat death of the universe collapsed onto him to finally end the soul-crushing boredom.
Or two: watch whatever the hell was on his newly acquired TV.
Alone and bored to death, Mettaton looks for a way to pass the time while the Internet is down. Good news, he does. Bad news... uh, it’s totally normal to want to kiss your recently acquired TV, right? (asking for a friend, haha...)
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Reader is a lawyer who was looking for a cheap room for rent. After Papyrus left to study abroad for culinary arts, Sans was down to let her stay in his brother’s room for a fair price. They both have a great roommate relationship; they don’t know each other that well yet, but Sans makes her laugh.
One day, she walks inside the apartment, wondering if she was seeing double or if there were two identical skeletons in the middle of the living room.
Yeah, a second roommate was never mentioned on the lease.Series
- Part 1 of Three idiots
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"Traumatized people chronically feel unsafe inside their bodies: the past is alive in the form of gnawing interior discomfort."
-The Body Keeps The Score, Bessel van der Kolk
Dr. W.D. Gaster is not a happy man...but he had been, once. Perhaps he could be again.
...and he can't stop thinking about you. Can't make himself stop thinking about you.
A story in which love, quite literally, saves the world.
(Now in Arc 2)