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Everyone knows the story of Undertale. But what if something changed? Just like the take for-told, King Asgore, King of monsters, declared war on all of humanity after both his human child and biological son died to the hands of the humans who lived in the village on the surface. But tragedy struck, and Asgore died in the war he created for himself.
The King’s ex wife, Queen Toriel, now finds herself trapped within a dire situation he had left for her. She managed to bring the war to an end peacefully like she wanted, but at the cost of her fellow monster’s freedom. The humans created the barrier, and trapped all monsters underground. Queen Toriel, her heart now broken into pieces and now remolded into something darker, set a rule where all humans that fall into the underground won’t be killed, but will instead be made into slaves.
But what happens when it’s a child that falls into her newly established hell? Will her heart be opened up once more? And will a silly little skeleton help her find the most precious thing she lost? You’ll just have to read to find out.
- Language:
- English
- Words:
- 1,683
- Chapters:
- 2/?
- Hits:
- 0
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Maybe one day (NEW VER.) by me_paina for WrittenKinzy18, Clichely
Fandoms: Undertale (Video Game)
26 Jun 2025
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This is only going to get worse before it gets better, and well... Lets pray he won't find a way here because...
No one would survive his massacre.
or
ATE Dust accidentally got transported to the winged universe.
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Just a tip to you all, this story will have violence and it may disturb some audiences.If you haven't read ClicheAly's writing, you won't know how gruesome some parts are and you won't know anything about this Dust or his AU, so I highly suggest that you read Murder to Dust and An Alternate Turn of Events before you read mine.
It is also good to know that this is taking place in the Winged Multiverse, so I suggest you read WrittenKinzy18 stories and series.
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3/?(ATE multiverse belongs to ClicheAly)
(Winged multiverse belongs to WrittenKinzy18)
(Drawing by me (Me Paina))
(Undertale by toby fox)Series
- Part 2 of CROSSOVER BETWEEN ATE AND WINGED AU
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Como científico real, Gaster debe ver siempre por el funcionamiento de todo pero eso ha llegado a costarle mucho más de lo que imagina, y por eso mismo el rey debe encargarse de él, pero ¿hasta que punto? ¿Cruzarán la linea más allá de la amistad?
[Posible edit de summary]
Ahora, con el paso del tiempo, este "pequeño" Kingdings ha pasado casi a ser un AU alternativo, si aún decides seguir leyendo y averiguar que ha ido pasando por mi cabeza, eres bienvenido, sino, eres libre de dejarme pasar de largo y gracias por leerme hasta donde llegaras. -
Idea Dump by JackandStrawberries_DontAskIWontTell
Fandoms: DCU, Batman - All Media Types, Red Robin (Comics), Young Justice - All Media Types, Undertale (Video Game), Hollow Knight (Video Games)
26 Jun 2025
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Just a bunch of ideas I may or may not do one day, I really don't know. Basically some story prompts (mainly related to Tim Drake) that I thought of that other people might be interested in but I have no will to make. So uh- I don't know. If you want to use a prompt of mine, feel free to just make sure to credit me.
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Clover decided not to give up his soul after the ceroba's fight, were will clover go? And he may have some "discoveries"
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A Third Chance by NullVol
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
26 Jun 2025
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Very few people get a second chance at life, but what if someone had the chance at a third?
Tags are subject to change.
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you've been playing for far, far too long.
very short. very mid.
- Language:
- English
- Words:
- 276
- Chapters:
- 1/?
- Hits:
- 15
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North Star Don't Know a Damn Thing by Many_Mythical_Creatures
Fandoms: Undertale (Video Game), Undertale Yellow
26 Jun 2025
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Rain had zero idea what the hell would happen when she fell.
Like, seriously.
Dragons, hell yeah!
Treasure? Even better?But, nah. Why not get stalked by a psychopathic flower and...
I guess, actually learn acceptance and love and HOPE from ...
a cowboy?Oh, boy this should be fun.
Series
- Part 1 of Save Points
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The barrier just got destroyed, the future has hope, but Frisk can't stop thinking about the human souls, they feel like they need to help them, but they're not sure how
- Language:
- English
- Words:
- 820
- Chapters:
- 1/?
- Hits:
- 22
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The Dual Lights in the Underground - Undertale Red and Yellow Fan Fic by therealone12131
Fandoms: Undertale (Video Game), Undertale: Yellow, Undertale: Red and Yellow
25 Jun 2025
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It's been several years since the last human fell into the underground, and today, in the year 20XX, the eighth human falls in, just like the rest. Two unfamiliar, ghostly friends will await this human, but...
The human isn't Frisk.
A whole different adventure awaits this new human.
Inspired by the Undertale Yellow fan game by Master Sword and the Undertale Red and Yellow mod by Shinix.
Absolutely love their work, I hope my writing can match even a 10th of theirs. -
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Reality is unraveling. Time no longer follows rules—it bends, loops, and rewinds, pulling souls into paths they were never meant to walk.
As memories clash and timelines bleed into each other, a new force emerges—one that threatens to erase not just the future, but every version of the past.
How do you fight what was never meant to exist?
And what will you become when time runs out? -
The Doctor's Descent by Feanyx1
Fandoms: Undertale (Video Game), Doctor Who (2005), Doctor Who, Deltarune (Video Game)
25 Jun 2025
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He thought that the radiation would kill him. He thought that his time as the Doctor would come to sad and brutal end. He was wrong. And that was so much worse.
In his efforts to find himself, and without his companions, he accidentally stumbles onto a monstrous civilization miles below the Earth. With his newfound DETERMINATION and some new allies, he'll come to realize what it truly means to be a friend, and learn how to live his last lives with his head held high.
And make sure that, just this once, everybody lives.
OR
Undertale but the Tenth Doctor replaces Frisk. Fluff, angst, AUs, and timeline shenanigans ensue.
*No knowledge of Undertale or Doctor Who is required, though it is helpful if you've experienced at least one of them.
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FRISK GETS THE FLU SND NOW EVERYONE IS WORRIED
(LET ME KNOW UR THOUGHTS AND IF I SHOULD CONTINUE TO UPDATE THIS)
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In which I make sense of what is left of a dying world by sansytama
Fandoms: Undertale (Video Game)
25 Jun 2025
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Summary
a collection of short writings i made. each chapter is its own thing and they have individual theme.
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Shattered Decade by An_Overly_Curious_Revolver
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
25 Jun 2025
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[Premise]:
Clover has been trapped in a loop of running through all the different routes of Undertale Yellow for 10 real-time years.
Right at the end of a Genocide run after destroying Axis, unable to suppress a guilt gnawing at them from within, Clover aborts it.
The gunslinger fights Flowey with an equal level of determination, and the save file gets damaged.The data corruption sends Clover all the way back to just outside Mt. Ebott, and also ages Clover and the world up by 10 years.
Clover has the memories from the last journey they just went through, a few fragments of the other routes, and a vision of a certain laboratory.
The fully grown cowboy decides he has to do things differently this time.No more SAVEs. No more LOADs. No more RESETs.
This is their final shot. Do or die. -
By Choice {A Chara x Reader Undertale Fanfic} by imtooshortforyou
Fandoms: Undertale (Video Game)
25 Jun 2025
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Summary
Y/N was never the type to be around people. She didn't have many friends besides her sister, but she didn't mind. It wasn't until Frisk and the Dreemurr family came along and became the family she had once lost.
Through Frisk, Y/N is able to realize the power of their determination. One night, as Y/N is hanging out with Frisk and Asriel, the topic of Asriel's dead sibling, Chara, comes up.
For some reason, the conversation led Y/N to want to explore the underground, for maybe there's a lonely ghost wandering around all alone with nobody to talk to.
Reader, Frisk, and Chara use She/They pronouns
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Frayed Strings and Broken Promises. by TheHourglassForest (HourglassForest)
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
25 Jun 2025
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Summary
A life cut short,
sometimes can be a life worth saving.But is the effort required in doing so worth it?
And if done, what would be the cost?
There's no such thing as a deal that is too good to be true.And yet, some don't heed the warning.
This will cause devastating effects later on.
It's up to Clover and their friends to figure out how to deal with this situation.Series
- Part 1 of The Forest Beyond
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GENERATIONS: Memories Alight (Freedom AU Book 13) by MapleInk62
Fandoms: Five Nights at Freddy's, Undertale (Video Game)
25 Jun 2025
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Summary
Fazbear Entertainment had always been able to easily control Anthros in the past, taking great advantage of their lost memories for far too long. And now, after all this time, these memories have been brought back to light, restoring the missing parts of each effected Anthro.
Yet, while the Anthros may have regained their memories, with it comes a realization that some may need process their pasts at a slow pace. As it goes, the good memories aren't the only ones which have been restored. Not all is simple clarity as each Anthro recalls their individual pasts, and puzzling line of family generations.
Series
- Part 23 of Freedom AU [FNAF/UT]
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Summary
𝗦𝗲𝗾𝘂𝗲𝗹 𝘁𝗼 𝗣𝗲𝗿𝗶𝘀𝗵.
𝙐𝙣𝙙𝙚𝙧𝙛𝙚𝙡𝙡 𝘼𝙐---
In a world where everything seems to be slipping through his fingers, Sans knows that the only way to survive is to do whatever it takes. With the weight of her life in his hands, he faces a terrifying truth: some things are worth losing, but he’ll do anything to ensure she isn’t one of them. In the end, the question isn’t just how far he’ll go—it’s whether he can live with the cost.
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He remembered the conversations and the words they’d already spoken a thousand times over, the responses they’d known before they’d even asked. He remembered the fights and the endless, grueling battles where he had lost, and then won, and then lost again. The victories became hollow, empty echoes, and in the end, even the victories felt like failures.“You ever wonder,” Flowey’s voice trailed off, dropping into a hushed murmur that seemed to blend with the sound of water lapping at the stone. “If maybe she was never supposed to come back?”
The question hung in the air, heavy and unresolved. Neither of them spoke after that. They just sat there in the swamp, a place that used to be full of life, now lost to time and decay for what seemed like ages.
Series
- Part 2 of The Perish Duology
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Sick To Death (Of Me Chasing You) by CrossoverAU
Fandoms: Undertale (Video Game), Alice by Heart - Sheik/Sater/Sater & Nelson
24 Jun 2025
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Summary
Raine was sick. Really sick.
The kind of sick where, despite not knowing what she had, she knew she didn't have long left.
Her best friend Sans knew that too.
Not wanting her to live her last moments trapped in her house, Sans read her one of her favorite stories, Alice in Wonderland.
While chasing her through the pages, Sans learns that he loves her too much to let her die.
Will he be able to let her go or will he try to selfishly stop the clock?
Aka an Undertale/Alice By Heart crossover fic because I couldn't find one
Note: knowledge of Alice By Heart isn't needed to read this fic!