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Overgrowth by relyne
Flowerfell AU
Rated: T - English - Drama/Adventure - Chapters: 3 - Words: 15,083 - Published: 10/18 - Frisk, Sans - Complete
UNDERmoderators by Signo de exclamacion
Antes de los acontecimientos del capítulo 0.5 de su evento especial, Ink se encuentra con rostros a los que no había visto en milenios. Antes de él, antes de Error, antes de todo. Todo juego tiene sus moderadores y los suyos están molestos con Ink y amenazan con dejarlo fuera de su propio juego: El evento X. [NINGÚN OC ES EL LECTOR]
Rated: K+ - Spanish - Drama - Chapters: 1 - Words: 4,472 - Published: 10/16 - Sans, Gaster, Frisk, OC - Complete
Undertale:After Story by Empv
The story right after Undertale.
Rated: T - English - Drama/Family - Chapters: 11 - Words: 1,907 - Favs: 3 - Follows: 4 - Updated: 10/16 - Published: 2/13/2018 - Frisk, Toriel, Sans, Monster Kid
You Are Sans Now by Greyshi reviews
A twist of fate? The path set by destiny? Or some kind of a prank played by the gods? For one reason or another, you've lost everything yet gained so much more. You have the knowledge and the power to change the world, so use it wisely. Follow your heart, seek out the answers and don't forget - you are not alone.
Rated: T - English - Adventure/Friendship - Chapters: 40 - Words: 154,277 - Reviews: 202 - Favs: 332 - Follows: 365 - Updated: 10/15 - Published: 5/26/2016 - Frisk, Papyrus, Sans
Undersin: A Tale of Karma by Slime-Based-Ink
A young boy decides to treck up Mt Ebott and falls into the underground, now joined by two ghostly companions. How will their journey take shape? [This summary will be changed at a later date]
Rated: M - English - Supernatural/Adventure - Chapters: 1 - Words: 2,002 - Favs: 1 - Follows: 1 - Published: 10/13 - Frisk, OC, Chara
Undertale: WarSwap by DefaultGoddess
Humanity had lost the war over 600 years ago and sealed themselves in the underground, now on the brink of overpopulation and starvation The Core of the underground was set off in a massive explosion killing all but two hurtling these two people into the unknown. While the explosion caused universes to collide and merge together leaving a Skeleton confused on his 4 new brothers.
Rated: M - English - Hurt/Comfort/Humor - Chapters: 2 - Words: 4,786 - Published: 10/9 - OC, Papyrus, Sans, Gaster
Masked Monsters by Fantastical Chaos reviews
There are monsters in the forest. Now trapped within the endless woods surrounded by mask-wearing individuals, it is up to Frisk to discover the truth of the forest and to find the lost past of her mask companion all while hiding what she is from those who would seek to wear the skin of her face as their own.
Rated: T - English - Fantasy/Friendship - Chapters: 41 - Words: 67,098 - Reviews: 1 - Favs: 13 - Follows: 8 - Updated: 10/5 - Published: 10/5/2021 - Frisk, Sans, Chara, Flowey
Bard's Tale by Mezameta Durai reviews
Tell me my friend. A story as my eyes fall, one last story of how it ends, how it begins... and once its over let my eyes fall peacefully, and then when we meet again you can tell me everything new. "Well... it all began with a tear." Indefinitely on haitus.
Rated: M - English - Hurt/Comfort/Romance - Chapters: 13 - Words: 117,230 - Reviews: 7 - Favs: 10 - Follows: 13 - Updated: 10/3 - Published: 2/8/2020 - [Frisk, Asriel] [Chara, OC]
The Lone Defender by Sophtopus reviews
December 25, 2015 Mysterious black briars destroyed the whole of Ebott. Every inhabitant was lost except for a pair of brothers. Not long after, a tragedy claimed the younger one. Since then, the sole survivor did everything he could to prevent the calamity from spreading further.
Rated: M - English - Fantasy/Tragedy - Chapters: 19 - Words: 67,639 - Reviews: 1 - Favs: 20 - Follows: 18 - Updated: 10/2 - Published: 1/29/2021 - Papyrus, Sans
Severed Ropes,Wires Torn (ErrorInk) by KaitaroKujo
(UTMV Sanscest) A severed rope is hard to reconnect, a torn wire on the other hand.. Ink does something in a fit of desperation that shifts the course of Multiverse as everyone knows it, and somehow drags Error along with him. And The Creators are not that happy about it, to say the least.
Rated: T - English - Romance/Drama - Chapters: 1 - Words: 1,817 - Favs: 3 - Follows: 3 - Published: 10/2 - Sans
Soul Trait Magic: Informational Guide to Human Souls by jord477 reviews
An informational guide to the traits, powers, and anatomy of human souls.
Rated: T - English - Chapters: 3 - Words: 8,050 - Reviews: 3 - Favs: 4 - Follows: 2 - Updated: 10/2 - Published: 2/12
You Thought You Killed Me? by Polarfog
Sans is saved after the human nearly kills them. Whelp, only one thing left to do. For Whumptober Day 1: All 4 Prompts: "But now this room is spinning while I'm trying just to fill in all the gaps." Safety Net Swooning "How many fingers am I holding up?" Prompt: Confrontation for Bad Things Happen Bingo Oneshot
Rated: T - English - Chapters: 1 - Words: 571 - Published: 10/1 - Frisk, Sans, Alphys - Complete
Apple Picking by Polarfog
Sans takes Frisk to pick apples. Oneshot For promptober Day 1: Apple Picking
Rated: K - English - Chapters: 1 - Words: 235 - Published: 10/1 - Frisk, Sans - Complete
Gyft-Christmas Troubles by Polarfog
Sans feels bad for ruining Frisk's first Christmas with their new family, can he make it up to them? Oneshot For fictober23 Day 1, Prompt: "It's not too late, let's go."
Rated: K+ - English - Hurt/Comfort/Family - Chapters: 1 - Words: 608 - Published: 10/1 - Frisk, Sans, Toriel - Complete
Undertale - Kindness by sakuranri reviews
Something happens to stop the normal flow of a Genocide run. An anomaly appears...but maybe it's not the one you think. *Trigger warnings: there might be some violence/threats/feeling trapped and self-harm at some point
Rated: T - English - Hurt/Comfort/Sci-Fi - Chapters: 48 - Words: 87,775 - Reviews: 3 - Favs: 27 - Follows: 35 - Updated: 9/30 - Published: 11/19/2017 - Papyrus, Sans, Flowey
Dusttale Fractured Shadows by Fandom Of Words
in this story explores the aftermath of a dark past, following Dust (formerly known as Sans) as he grapples with the consequences of his actions during the Genocide Route in Undertale. He seeks redemption and struggles to cope with the weight of his past deeds. Meanwhile, Frisk, driven by curiosity and a desire for power, represents the darker aspects of humanity.
Rated: M - English - Fantasy/Drama - Chapters: 3 - Words: 1,396 - Favs: 1 - Published: 9/30 - Frisk, Sans
chapter 1 into the ruins by Hanna reynolds
Amilia has finally found a place to start over but things are not as Happy as thay might seem. will Amilia be trusted by everyone and be able to heal/fix the damage shes done? follow Amilia on her path to healing old wounds and possibly make new friends. Authors note: i,m continuing where the ask mercy series left off the first chapter will retell the last genocide.
Rated: T - English - Family/Hurt/Comfort - Chapters: 1 - Words: 937 - Published: 9/29 - Frisk, Chara - Complete
DoubleTrigger by Fixer-DT reviews
"Might controls everything. And without strength, you cannot protect anything." A man falls into the underground and finds himself face to face with a demon. But he doesn't have the strength to beat them. In order to protect the ones he loves, he swore to do what ever it takes. Even if it means becoming a demon himself. (Based on XWolf26's DoubleTale)
Rated: T - English - Adventure/Angst - Chapters: 7 - Words: 48,098 - Reviews: 7 - Favs: 8 - Follows: 9 - Updated: 9/26 - Published: 5/22/2022 - Frisk, OC, Chara, Gaster
Tori & Her Star Child (Toriel Lemon X Male Reader) by YuNarukamiStatus reviews
You are dropped into the underground world, home to many monsters when a very voluptuous goat mom approaches you and takes you in. There are many mysteries centered around you. It is up to you if you wish to uncover them. This thicc monster lady would like to help, but she wants quite a bit from you. Will you be able to satisfy her overwhelming needs like her husband? Could what yo
Rated: M - English - Romance/Supernatural - Chapters: 4 - Words: 21,544 - Reviews: 2 - Favs: 44 - Follows: 31 - Updated: 9/26 - Published: 3/24 - Toriel
How to Train Sans by Polarfog
Ever wondered how Sans is so compliant to Papyrus' demands, well let's take a look to Sans' training, shall we? Underfell AU. Written for the prompt brainwashing for Bad Things Happen Bingo. Oneshot
Rated: T - English - Angst - Chapters: 1 - Words: 1,158 - Published: 9/26 - Papyrus, Sans - Complete
PATCHWORK SOUL - NEW MEDIUM by Spark the Barkivist reviews
DIRECT SEQUEL TO "PATCHWORK SOUL" — A few months later. A family of monsters and their little human kid try to start life anew beyond the confines of a giant mountain. Maybe they find something. Maybe they lose something. Time flows ever onwards, but sometimes it goes sideways, and it's heavier than they thought.
Rated: T - English - Adventure/Drama - Chapters: 111 - Words: 1,281,849 - Reviews: 62 - Favs: 96 - Follows: 88 - Updated: 9/24 - Published: 10/12/2019 - Frisk, Asriel, Papyrus, Sans - Complete
Chronographer Records by Sophtopus reviews
Golden Quiche / Crimson Keeper specific universe. A 'Chronographer' is a title reserved for those with the power and authority to observe, manage, and record the annals of spacetime. They're the primary historians of this world.
Rated: T - English - Chapters: 19 - Words: 55,578 - Reviews: 4 - Favs: 14 - Follows: 13 - Updated: 9/23 - Published: 2/27/2017
DoubleTime by TiredWhiteMayge reviews
Twenty-one iterations of W.D. Gaster gambled on plucking a human from beyond their reality to stop a vicious cycle of genocide, and changed the multiverse forever. In a scrambled timeline, away from the grand tragedy of The Angel & The Anarchist, a young woman awakens on a bed of flowers in her pajamas...
Rated: T - English - Adventure/Friendship - Chapters: 16 - Words: 67,482 - Reviews: 54 - Favs: 24 - Follows: 34 - Updated: 9/21 - Published: 3/16/2021 - Frisk, OC, Chara, Gaster
CharaFell by Op7 reviews
(Being Continued) Down into the dark, Chara fell. Down into the dark, an experiment was run. What if she got to go home? But what if it wasn't to the world as she knew it? What if she was placed into another, at another time? What if that happened to be a version of Underfell?
Rated: T - English - Fantasy/Adventure - Chapters: 44 - Words: 122,910 - Reviews: 13 - Favs: 43 - Follows: 47 - Updated: 9/20 - Published: 5/1/2016 - Sans, Chara, Toriel, Flowey - Complete
Soul of our Hearts by Congar reviews
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital.
Rated: T - English - Fantasy/Adventure - Chapters: 242 - Words: 936,399 - Reviews: 2 - Favs: 9 - Follows: 10 - Updated: 9/17 - Published: 7/1/2022 - Toriel, Asgore D., Gerson - Complete
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