Top 25 Short Undertale Fanfics
Ranked by AO3 kudos. Mid-length Undertale fics — 10,000–50,000 words.
A Reprieve
by Or13M
When the quiet solitude of your new life is disrupted by a gaggle of skeletons moving in next door, you and your sibling find yourselves pulled into their orbit. Healing takes time, but maybe, this chaotic, affectionate family is exactly what your soul has been waiting for. *Inspiration taken from "
scrimshaw
by Mayumara
You were an ordinary maintenance worker, part of the crew of the Aurora when it crash-landed on an alien world and left you stranded in a hostile ocean. There are probably worse places to be stuck; at least the scenery is pretty, and you've always been passionate about marine life and alien research
Welcome to the Club
by Redacted_Writer
Undyne had been getting increase of dreams, all relating to a child in a blue and purple sweater. Sometimes they would be friends, in others... well...When Sans notices, he figures it's about time to let her in on a secret that only few know about.Welcome to the Awareness Club, Fishstick!
Under and Over and Over and Under
by Tr41n1ng_Wh33ls
Having been trapped for a few-too-many loops, Siffrin started to feel like nothing was going to change in their never ending play. How were they supposed to predict that the universe would put something so large to block their path to freedom? Literally? 'Something' the size of a mountain. Literally
Flower-me-not.
by B3_l
[Honestly.. After everything you've been through you didn't expect to find yourself here, in the middle of a fight between two men you recognized too much to be normal, with your unconscious husband in your arms having a near death grip on both newborns while you could at least stand without feeling
I Just Fell In Love With a War
by PlutoDeity
It all started with a housewarming party where only you showed up. Now, you're tangled up with multiple skeletons and a woman that hates your guts for no reason. As much as you want to act like you don't care, you really do, so what do you do now?It's not like you can survive on your own.
Everybody Here Wants You
by FuCkInG_FaBuLoUs
Hmm, such a thing of wonder in this crowdI'm a stranger in this townYou're free with meAnd our eyes locked in downcast loveI sit here proudEven now you're undressed in your dreams with me ~~~~~~~ You didn't cheat out of retaliation. To make things even. Perhaps some part of you did, a small vindicti
What Could Possibly Go Wrong?
by callmealoser
You’re a 23 year old who’s been living in a mansion you inherited from your Grandmother for a couple of years now. Your days consist mostly of chain smoking, drinking, sleeping, and scrolling. The house is huge, dark, and lonely. One day, out of pure boredom (and NOT loneliness) you post an ad looki
A Prophecy Come True
by yin_the_mr2
When the human mages first sealed the monsters underground, they accidentally created an all-seeing entity that watches over monster-kind. When the CORE explodes, this entity is given a conscience; and when Frisk falls down, the entity watches their journey to learn morality from them. When the Barr
The Physics of Attraction
by pessimistic_frog
Most people spend their whole lives wishing that someone would come along and sweep them off their feet. But what happens when that person is already in a relationship? Who will fate honor? And who will be cast aside in the dust. And the more important question... who will get a better grade on thei
Ship Children asks and dares
by iamauthor979
A fic where you can ask any of my ship kids questions and dare them to do things. 100% SFW because every ship kid's a minor. TADC and Murder Drones are there from the start. If you're here for the Undertale AU, skip to Chapter 31. If you're here for Sprunki, skip to chapter 82.
Strangers
by Solysteria
"We are strangers, you and I,What makes us different from who we once were and will never be?We are no longer the same, it is a fact,So why does the pain remain the same?" ★ ★ ★ Error has spent his life trying to forget Ink, the one he once believed was his everything. Now, nearing his 30s, he is re
Feels Like Company
by girlwhateverdotcom
Mettaton looked back on those rainy days, gazing out of the window and daydreaming as he watched his neighbors go about their lives… Nearly every time, his fantasies of sharing an umbrella with an exceptionally handsome stranger (whose face he could never place) would be hilariously interrupted by t
As The World Caves In
by Acefirstbase
Spamton G Spamton has one goal with this masters program in journalism: to secure the coveted internship with the biggest television studio in town. But he has a problem. A BIG one. And said BIG problem also happens to be his roommate. Tenna is also vying for this position, along with the other two
Crocuses, Oak Trees, Jasmines, and Edelweisses
by AleonaIceCream
You recently moved into this mansion, and a few days after getting all the stuff over, you have a thirst for waffles, but you don’t have sugar at home! Unable to wait, you walk to the neighboring mansion a couple minutes away, and find some things (more like a couple someones) that shake up your new
Suits and Stars, Hazy Bar Nights
by Ayako_Drawingz
To celebrate a year of monster freedom, Former King Asgore is hosting a party! Grillby knows who he wants to go with, but goodness, why would he ever feel the same...? (aka, Sans and Grillby are pretty dumb about eachother, suffer in their feelings for like two days, and well... it gets sorted out i
Bodyguard's Debt. [ENG]
by GastroRage
Frisk knows her life hangs by a thread, and Sans is the hitman holding the shears. But in total isolation, the labels of 'captor' and 'captive' begin to rot away. Between the trail of smoke, the taste of cheap whiskey, and a desire as destructive as gunpowder, they have both crossed a red line that
Flowered Vines Grow on the Memory of the Arch of a Swing-set
by yastaghr
One childhood promise leads to changes that will ripple through the lives of more than just the three skeletons who shared it. When it comes into the spotlight, the result is a wave of change that will effect lives, families, and even an entire web of nations. Will the luck behind it bring good or b
Bodyguard's Debt. [ESP]
by GastroRage
Frisk sabe que su vida pende de un hilo, y Sans es el asesino que sostiene las tijeras. Pero en el aislamiento absoluto, las etiquetas de 'captor' y 'cautiva' empiezan a pudrirse. Entre el rastro de humo, el sabor del alcohol barato y un deseo tan destructivo como la pólvora, ambos han trazado una l
Desconocidos
by Solysteria
"Somos desconocidos tú y yo,¿qué nos hace diferentes de lo que alguna vez fuimos y nunca seremos?,ya no somos los mismos, es un hecho,¿entonces por qué el dolor sigue siendo el mismo?" ★ ★ ★ Error ha pasado su vida tratando de olvidar a Ink, con quién alguna vez creyó tenerlo todo. Ahora, casi a sus
across the ocean
by Deev_213
you were 16 when the barrier broke, freeing all the monster. you watched it happen on the news with your parents. you were in awe you've always loved magic and myths and everything of the sort, so when this happened you just new you had to befriend a monster and where better to do that then the mons
Whimsey is the Music of the SOUL
by tyedyeguy44
A collection of non-canon short stories within the universe and using the characterizations of the characters in my "Where the Flowers Grow" series. While the characters act true to themselves, their histories and circumstances may be different than established canon.
The one and only you
by Housanweiaaa
No summary provided.
Magic I Want U
by ilymettaton
Papyrus goes out to the bar by himself for the first time and, after an uncomfortable experience, runs into Mettaton, an acquaintance he knows through mutual friends. Papyrus doesn't know him well, but he's drawn to him, and miraculously, the pair hit it off, the typical awkwardness of their interac
A Punner Over My Shoulder
by Redacted_Writer
Urban Explorer Frisk falls down into a hole after hearing tales of a lost civilization within the mountain of Ebbot where they are in for a ride no human could have ever predicted.
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About This List
This list of 25short Undertale fanfics spans 548,341 total words. Kudos range from 8 on the newest entries to 412 on the most established. Most entries are ongoing works, so subscribe on AO3 for update notifications. The most common rating is Mature (9 of 25 fics).
Recurring tags across this list: Underswap Sans (Undertale) · Horrortale Sans (Undertale) · Underfell Sans (Undertale) · Underfell Papyrus (Undertale) · Underswap Papyrus (Undertale).
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