1 - 20 of 246 Works in Determination (Undertale)
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Susie and Noelle are interrupted on their Festival date when they stumble upon a Dark World in Asgore's flower shop, Kris and Catti follow them inside. Though their adventure starts out innocent, sinister truths about the world and its history come to light.
As Alvin picks up where his father left off, the Fun Gang ventures into the world of darker than darker than dark. A grand conspiracy unravels, and Susie's hope shines bright into a new future.
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After the fall of the Barrier, life on the surface has begun to settle—but not all wounds heal with freedom. Frisk and the monsters navigate the quiet rhythms of a new world while remnants of the Underground’s past ripple beneath their feet. Between sleepless nights and strange seismic readings, old instincts stir, and a journey begins—one that may unearth more than just stone.
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An Angel falls down into the void.
They want their creation and will fall with them.
This will be very, very interesting.
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Desert Sanctuary Fan-Content: Sanctuary on Fire by youraveragefanficreader1710
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Transformers - All Media Types, ULTRAKILL (Video Game)
02 Dec 2025
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I really liked Desert Sanctuary's concept. So I wanted to do a *small contribution.
*I lied, it's BIG. Over-arching plot, characters from a different franchise integrated into this universe (Mainly Transformers), and most importantly it's not canon to the actual DS with some of my headcanons sprinkled here and there.
Desert Sanctuary belongs to KarmaSpidr (good lad)
- Language:
- English
- Words:
- 3,785
- Chapters:
- 1/?
- Kudos:
- 7
- Hits:
- 130
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One day, our main character decides to open up Undertale before going out with some friends, he leaves the game on when he leaves, and when he returns, he finds the game with completely new dialogue, but as he finishes reading it, he slowly falls unconscious until he wakes up in the world of the game he loved.
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The soul of Determination. MLP by therandomreader1009
Fandoms: My Little Pony Generation 4: Friendship Is Magic (Cartoon 2010)
30 Nov 2025
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y/n is the soul of determination. They've traveled a lot to get here, going through all sorts of universes and such, but now they've found a very peaceful world and plan to stay here for the rest of their "life". However, they are foreign to this world's magics and way of nature. How will this world react? Can they find a place to fit in? And most importantly, how will they get a body of their own? All this and more is coming now.
A slight warning, the plans I have for y/n makes it so we can't have this world be the normal MLP Friendship is Magic world. So we're gonna need to make the characters of this world anthro, if that's the right word.
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Soul And Flesh by PandaHatGuy
Fandoms: Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime)
25 Nov 2025
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Something is wrong with Od Laguna.
Its power has grown weaker and its divine protections almost having no effect.
The nights had grown longer, and the moon turned a blood-red. The stars that covered the sky grow dimmer anddimmer by the day and mana that was once abundant finds itself scarce with passing time.
It is said that a gate in the forest of Elior had opened, where countless humanoid infected enters through it every passing night.
Many terrifying creatures with distorted figures roam around the land come nighttime, exposed to much corrupted mana and insanity from the Blood Moon.
A boy is summoned in this hopeless world without a hero, eager to become one as the stories told.
The extraordinary power he received? A soul filled to the brim with determination and a couple of fun buttons to play with. -
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***I'm rewriting a bit on all chapters, cause it looks like I'm shitpposting. Apologies for any misakes. I should be done when this text disappears.***
Two typical police officers from New Zealand, soon finding themselves in a world filled with anthropomorphic beings—went on with their normal routine.
It was supposed to be standard procedure driving back to the station with the suspects safely.Until a particular tunnel ruined it all.
Stuck with two troubled teenagers, they’ve made a daring choice to drive around to find help. With each passing minute, everything was filled with enigma and furrowed looks as each passing second brought hair pulling feelings.
But, driving into a large city called Zebuth.
Caused one use of gunpowder to be marked as NSC’s fugitives.-----------------------------------------------
You can find this story on here and on Wattpad.
I'll be transporting my published chapters from there to here.
My Wattpad - BasilManCard -
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After losing her parents too young, a lonely girl grows up in a house where she’s treated like a burden. With nothing but a pencil to comfort her, she escapes into the worlds she draws never realizing those sketches will shape her into the artist she becomes.
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The Best Promise - A Frisk/Sans Story by idolR21
Fandoms: Undertale (Video Game), Undertale
21 Nov 2025
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Sans never cared for anything except Papyrus and science. When he meets Frisk, the seventh human to fall underground, he begins to shed his aloof mask and realizes how much Frisk has to teach him about hope and love.
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Losing my breath by Sitri617
Fandoms: Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime)
15 Nov 2025
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The world of Od laguna is destroyed by a mad scientist.
The survivors and the people of earth are left to pick up the pieces
Alternative path to my every breath you take fic.Thus is the path that allows for happiness for two broken worlds.
This is blasphemy.I put it right there made it easy for you to get too
Now you act like you don't know what to do
After I done done everything that you asked me
Grabbed you
Grind you
Liked you
Tried you
Move so fast
Baby, now I can't find youSeries
- Part 2 of Bad Romance
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Dream wasn’t much of a writer.
Well, he wasn’t a writer at all.. Considering he couldn’t read or write.
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Gather children, listen well, harken to the Under Tale.
A story of a small child, falling into a massive cavern where monsters have made their home. With the help of a certain phantom, the child makes their way through the Underground, making friends & family along the way.
I own absolutely nothing in this. Undertale, along with with characters, setting, etc., belong to its respective owners, who are not me.
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Frisk didn't like the outcome of the date at the MTT resort.
That's okay. She could just use her determination to live through it again, make better choices, say some better words...
All she had to do was die. Like, right now. Even if someone was there to witness it.
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Hope, the white pen that can overwrite the dark. It inspires and brightens, but alongside hope are dreams: a guiding light through the darkest of nights.
In the depths of a scarred dark world, a titan spawn gains memories it shouldn't have and begins its climb into that light. But along the way, it'll learn that dreams are made to be crushed.
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Deltarune: The True Sanctuary. by The_Universal_Maker
Fandoms: Deltarune (Video Game), Undertale (Video Game)
25 Sep 2025
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The 3 heroes of prophecy are now fated to find a dark world that fits neither their prophecy or The Knight's usual pattern.
Can they save the day?
Who is the Knight?
Nobody knows, its reveal may or may not happen.Series
- Part 2 of The nexus experiment
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for even the flowers have forgotten you, by golenlovkett_ueowip
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Undertale (Video Game)
17 Sep 2025
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Eraserhead tracked Bakugo’s movements with ill-hidden annoyance, mouth pressed into a thin line. His gaze lingered on the space behind his student, then around the hallway. His frown deepened.
“What are you doing?”
Whatever answer his teacher wanted, an annoyed gesture at the kid beside him and an unimpressed look wasn’t it.
“If you wanted something from another teacher, it can wait. Classes should be starting in five minutes.”
“Yeah, whatever.”
Irritation scratched at Bakugo's throat, leaving him parched and hateful. He took a swig of his drink, mouth twisting in obvious displeasure. When the fuck did his drink get so disgustingly warm?
Fucking typical.
“...Chara.”
What?
“Greetings.” The strange kid looked at him, him alone, and smiled. “My name is Chara.”
In which Bakugo Katsuki dies, and learns that even death cannot hold him. This changes everything.
(*No prior knowledge of Undertale and its mechanics required, though recommended.)
Prologue: 1 - ongoing
Now has a dedicated tumblr blog. Ask me anything.
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I'LL PAINT THE KITCHEN NEON, I'LL BRIGHTEN UP THE SKY. by Sneakyfox55
Fandoms: Undertale (Video Game)
28 Aug 2025
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Sans gets sick.
Series
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Susie's determination helps save the fun gang as they battle the knight for the first time!
- Language:
- English
- Words:
- 612
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 82
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This is not a tale of slaughter for the so-called "greater good".
This is a tale of one who has grown tired of such slaughter, bringing justice to so-called mistakes of the multiverse. A tale of a faceless killer... of "Dusttale's Endbringer".
- Language:
- English
- Words:
- 3,673
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 47