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Another Ending by Zekyn
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
10 Nov 2025
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What if one pivotal moment had gone differently? Chara and Asriel find themselves facing the aftermath of choices that could have ended them both.
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Danganronpa: Ultimate Fusion by Mackanimation
Fandoms: Just Shapes & Beats (Video Game), The Amazing Digital Circus (Web Series), Cookie Run (Video Game), Cult of the Lamb (Video Game), ちいかわ | Chiikawa (Anime), Deltarune (Video Game), ENA - Joel G (Web Series), Work at a Pizza Place (Roblox), Dandy's World (Roblox), Undertale (Video Game), Garten of Banban (Video Games), 妖怪ウォッチ | Yo-Kai Watch, Pokemon Super Mystery Dungeon, どうぶつの森 | Animal Crossing Series, PaRappa the Rapper (Anime), Kirby (Video Games)
10 Nov 2025
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16 participants from different universes have been "invited" to a place called Ultimate Fusion Academy, only to find out that's where a killing game is taking place. Who will survive? Who's gonna get out safe? Gotta wait to find out!
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It's been three years since you fell into the underground and found a family among the monsters of the Ruins. You love your life here with Mom, your ghost buddy Blooky, your prickly friend Flowey, and the host of Ruins monsters who have accepted you as their own, but things can't stay this way forever. Your friends deserve to see the sun, and there's a prophecy to be fulfilled and a barrier to be broken. Your determination pulls you onward.
The only trouble is that you'll have to make it through an underground full of monsters clamoring after the red SOUL in your chest, and each day as circumstances become more dire they lose a little more hope. This is a more desperate underground than the one you landed in. The odds don't look good for one pacifist child with a stick.
Of course, you aren't completely outmatched. You've spent the last three years training for this moment, and you don't intend to let anyone hit you.
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UDY on the Surface by CommanderBullet
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
09 Nov 2025
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It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-life crossover AU.
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Falling into the Underground wasn’t on your to-do list. Falling for two skeletons definitely wasn’t either.
Blue is sunshine bottled in bone—sweet, loud, and determined to make you smile even if it kills him. Rus is quiet, steady, and the kind of person who remembers your favorite tea. Between the two of them, you’re constantly flustered, overfed, and very, very loved.
When both brothers realize they’ve fallen for you, chaos ensues—except it’s the polite, apologetic kind of chaos where no one wants to hurt anyone else. What starts as a tangle of awkward affection becomes something honest and warm: a relationship built on trust, laughter, and a whole lot of skeleton hugs.
“WE CAN SHARE THEM!” Blue insists, bright as ever.
Rus sighs. “That’s not how dating works, bro.” -
Dualtale AU: Two sides of truth by ED_Soul
Fandoms: Undertale (Video Game), Underverse (webcomic)
08 Nov 2025
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Description:
This story is based on the distant and little-known Dualtale AU,where nothing is as simple as it seems. In this world, unlike the original Undertale, monsters were never trapped underground. But what was the price for peace between humans and monsters? And how is it connected to XGaster, when these events unfolded long before the X-Event?
(Features characters from Underverse and Undertale,adapted for this story.)Author's Note:
In the Dualtale AU,the famous rule "Kill or Be Killed" is replaced by another:
"Speak out, and you will be silenced."
This is a universe built on lies and dark secrets that everyone holds.Every character has their own agenda and their own rules and it's better not to try and learn them.Series
- Part 1 of Dualtale AU: Two sides of truth
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Writing ideas that come to me at the moment, which may or may not be inspired by: Music, my drawings (or others), and/or other fanfics/videos.
Series
- Part 4 of Random Writing
- Part 4 of Oh, look at a fanfic with one of the fanchilds!
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A lonely, shut-in 'nobody' in Hometown receives a kind gift; a (not so) new CRT TV. Just the entertainment he was looking for all this time! A perfect distraction and at the same time, the mirror he never wanted to look into. Most strangely, along with this gift, he invited an entity into his house that made it impossible to ruminate all by himself. Maybe the push he needed towards success was actually... some TV time!?
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Tenna’s been assigned a new co-star by the network. Perhaps this handsome new partner will be improve more in Tenna’s life than just his ratings?
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Unexpected Hero by LemonCake64
Fandoms: Undertale (Video Game), The Legend of Zelda & Related Fandoms, The Legend of Zelda: Twilight Princess, Deltarune (Video Game), The Legend of Zelda: Ocarina of Time
07 Nov 2025
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“Not so fun being stuck in some loop right? Trying to fight to protect what ya got, not getting a choice in it. If I had the choice I wouldn't remember either.” The words oddly felt comforting. Link let out a slow breath, closing his eyes for a brief moment.
He didn't feel alone for the first time in a long time.
And that?
That was terrifying.
“To be honest, I kinda gave up a while ago. Just sat back and let the chaos go on, felt like nothing I did mattered anymore. Everything would just be reset anyways. Stopped caring what happened, that was until you showed up.” The skeleton’s eyes bore back into the Hylian.
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A FINE LINE BETWEEN ORANGE AND YELLOW by MairwynCSulien1990
Fandoms: Undertale (Video Game), Original Work
07 Nov 2025
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While Aneira didn't necessarily believe monsters existed, she did find the fact that everyone and their dog still did might mean something. Her childhood town of Beddgelert believed in monsters trapped under the mountains near their home that would need a seventh soul now to break out and destroy lands.
Aneira also knew that she needed to figure out what happened to the kid she was friends with who went missing. Which was how she found herself having fallen (probably) hundreds of meters below a mountain inside a cave system. Was she stupid for leaving without telling people where she was going, definitely, but, to be fair, she didn't expect to fall; she couldn't even see the hole.
Injured and wanting to go home, Aneira braves through the underground cave systems, finding MONSTERS both friendly and foes, learning about what happened to all the previous (children) HUMANS that fell.
tldr: Aneira falls instead of Frisk, is injured and is too stubborn not to use this chance to find out what happened to a friend (definitely dead by now, but she still wants to confirm), the Undertale cast feels like something is different, but not what. They also live in Wales here because why not?
Series
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Two Bad Bitches (at the same damn time) by charcat40
Fandoms: Deltarune (Video Game), Undertale (Video Game)
07 Nov 2025
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You've been the village doctor for Hometown for 3 years now. You escaped the bustling city-life in exchange for the the peaceful, cozy town nestled at the bottom of Mt. Ebott.
When the new local grocery store opened up, you didn't expect to see your ex, Sans of 2 years AND be the new neighbor that everyone was talking about.
And now your new TV is acting up and a little clingy (maybe a lot clingy).
Nice.
Takes place in Deltarune universe. For my greedy ass people out there who like both Tenna and Sans. (tenna on top tho)
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Unavoidable Outcomes by Crystalight532
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
06 Nov 2025
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The Multiverse isn't as unreachable as one might think. Sometimes, all it takes is one aware person to tip the scales for another to find out about it. But when one isn't ready for it, returning to their own world is relieving and best for the psyche.
Humanity's thirst for knowledge is near insatiable. How far would they be willing to go to learn more about their new magical coinhabitants on the surface? How far would they go if they could weaponise their magic?
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Under and Over and Over and Under by Tr41n1ng_Wh33ls
Fandoms: In Stars And Time (Video Game), Undertale (Video Game)
06 Nov 2025
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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.
Most would argue that the only way to go once you've hit rock bottom is up, but Siffrin would argue that you could always go down. Underground, even.
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An In Stars and Time and Undertale crossover! Because cringe is dead and I'm holding a Bacchanal over it's grave - care to join the dance?
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The world spinning by Silksongisreal
Fandoms: Undertale (Video Game), Deltarune (Video Game), Toby Fox Creations
06 Nov 2025
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A normal day in the universes when... what do you mean there are two sans'? (The worlds combine)
- Language:
- English
- Words:
- 1,064
- Chapters:
- 1/?
- Comments:
- 5
- Hits:
- 114
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You Dug Up This Grave, Now Lie In It by Taliax, ThisKwamiNeeds_aNap (KwamiNap)
Fandoms: Undertale (Video Game)
06 Nov 2025
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Mettaton brings home a strange skeleton child. With his now-skeletal cousin Chara unwilling to explain their origins or identity, he falls back Alphys's original assumption: that this child belongs to him and Papyrus.
Now he just has to convince Papyrus to play along... and convince himself that it's all just part of the show.
Series
- Part 16 of Chara and their Blook Family
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What if we got to see a more in-depth interpretation of monsters returning to the Surface? Here's my interpretation of it - through the POV of Mettaton.
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By Choice {A Chara x Reader Undertale Fanfic} by imtooshortforyou
Fandoms: Undertale (Video Game)
05 Nov 2025
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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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Essence of Freedom by GoldeRuby, RaphaelFrog
Fandoms: The Nature of Predators - SpacePaladin15, Undertale (Video Game)
05 Nov 2025
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Summary
Long ago, two races ruled over Earth: HUMANS and MONSTERS.
One day, war broke out between the two races.
After a long battle, the humans were victorious.
They sealed the monsters underground with a magic spell.
Many years later . . .
Mt. Ebbott 201X A lone child falls down into the Underground.
After a long journey, the BARRIER was broken.
And monsters once again are able to see the sun after years in the dark
But the story has only just begun . . .
Somewhere in space, 2136 A new tale begins once again. -
To join a (x3) crystal band by H0ppin_H00ligan
Fandoms: Undertale (Video Game), Super Dangan Ronpa 2
05 Nov 2025
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Summary
This fanfic was based almost entirely on a dream i had once; so the title, story concept and some elements were taken from that (idk why "to join a" is repeated 3 times in the title, it made sense to me in the dream)
About a week into his new life on the surface, papyrus gets bored and doesn't know what to do with himself now that there's no need for the royal guard anymore. One day he turns on the TV and gets struck with inspiration for his next big goal......STARTING A BAND!!!
- Language:
- English
- Words:
- 8,825
- Chapters:
- 2/2
- Hits:
- 26