1 - 20 of 9,630 Works in Sans/Sans (Undertale)
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[Corrupted] Nightmare accidentally sends his subordinate, Killer, to Dreamtale. But not just any Dreamtale, it's back when Dreamtale contained two young guardians and their tree..
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Killer goes to the past, fucks around, and finds out. -
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After a brutal conflict, tensions rise as Dream and his allies struggle to figure out how to stop an enemy who seems nearly impossible to defeat. Back at his hideout, the pressure of the situation begins to take a toll, and difficult decisions start to feel unavoidable.
Later, alone in the quiet of the night, Dream is forced to face his own doubts and fears. When an unexpected visitor arrives, the conversation that follows pushes him even closer to a choice he may not be ready to make.
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Several years after Error’s suicide, the Stars and the Council finally realise just how wrong they were about him. Their multiverse is falling apart. And so they decide to bring in an alternative version of Error from another multiverse.
However, they fail to take into account that he has absolutely no desire to fulfil his duties — he does not want to destroy. Even after persuasion, threats and manipulation, he does not change his mind.
Well then. For the sake of the multiverse, they were prepared to do anything. Even to turn the stolen destroyer into a virtual slave, who, under very real threats of a fate worse than death or torture, submits to their will.
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Shattered x Ink my beloveds
I'm making this to feel better
Anyways, might be mischaracterization, bad Grammer, all that.
Have fun reading my sillies fail at keeping their feelings<3- Language:
- English
- Words:
- 502
- Chapters:
- 1/?
- Comments:
- 1
- Hits:
- 16
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Another one :3
- Language:
- English
- Words:
- 788
- Chapters:
- 1/1
- Hits:
- 5
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\\Sweammare\\ Last Five Minutes. by Anonymous
Fandoms: Undertale, Undertale (Video Game), dreamswap - Fandom
24 Jul 2026
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Thank you! @Teabag. on X for the inspiration!
Series
- Part 7 of Sweammare Angst
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--Sweammare-- Harry Potter Parody by Anonymous
Fandoms: Undertale, Undertale (Video Game), dreamswap - Fandom
24 Jul 2026
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Gift for Mr. on X(Twitter)
I might make mistake... I only read a few part about your setting of Harry Potter parody...
I really like the setting (There might be headcanons)- Language:
- English
- Words:
- 3,547
- Chapters:
- 1/1
- Collections:
- 1
- Hits:
- 10
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!!!This story contains 18+ NSFW content!!! Please keep this in mind while you read!
Red wakes up in an AU that's not his own. After being taken in by Sans, his adventure begins. Drama, violence, silly insults, actual serious moments, romance, and more!
I don't know what tags to use, so tag suggestions are welcome! -
==Sweammare== The Last Dance Before the End of the World by Anonymous
Fandoms: Undertale (Video Game), Undertale, dreamswap - Fandom
24 Jul 2026
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DS!Nightmare = Test Subject N-714.
DS!Dream = Dr. Dream. -
Ideas for fan fiction by Ayajan_b
Fandoms: Undertale (Video Game), Deltarune (Video Game)
24 Jul 2026
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I don't know how to write fan fiction, so I'll be posting proposal here
I give you an ideas, you (maybe) give me a fanfic
(If you do this, please write about it in the comments)
P.s (Nightmare is my favorite and most of my ideas are related to him) -
These are The Voyages by gracer_spacer42
Fandoms: Project Hail Mary (2026), Project Hail Mary - Andy Weir, Star Trek
24 Jul 2026
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Ryland Grace had been living on Erid for over twenty years now. During that time, he had continued to do research on taumoeba and its properties. Grace discovered that there is a discrepancy between its measured mass when it consumes astrophage. Grace discovers Taumoeba can be used as a fuel source, and can create a faster then light travel.
What if the Eridians decide to use that technology to visit Earth?
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心中默念倒计时。
两位见证者相伴看着世界走向终结，书信人写上故事的尾声，听不见的声音，刺耳得令人头脑发昏。
他们看着世界宛如一场巨大的烟花秀。宏伟瑰丽，震撼人心且昙花一现，最后趋于无尽的虚无，沉沦于此就会窥见死亡的真相。死的真快。
他们为最熟悉的彼此，为这场宏大的死亡盛宴干杯
真希望他们下次不要再当Error和Ink了。
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( Cover art drawn by Hollowfox on AO3 )
Chapter three has been updated!
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(This fic is written in First Person)Error is done. Fate has been in control of his life for way too long. He doesn't have the ability to take it anymore. So he takes a risk. A risk that eventually makes Error terrified of what's to come. More for the ones he calls family than for himself.
Ink is just tired. Tired of waking up to see multiple universes. When he realises that he's not the only one under fate's control, Ink does the best thing he could think of. He helps and well... That leads to more problems for both of them than he could have ever imagined.
Fate will never go easy on them again.
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FGOD Error and Ink are taken by Fate to teach them what happens when the rules are broken. The multiverse Sanses must rescue them.
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(FGOD error belongs to harrish6)Series
- Part 1 of E.I.S Multiverse
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notes for "I'm not gone, I'm even closer than before(Literally, pls help I'm not dead)" by Entropy_Crow, Gardenburgz (Entropy_Crow)
Fandoms: Undertale (Video Game)
23 Jul 2026
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this was written within a few weeks of when i first started that fic, so its old writing.
contains spoilers for future chapters
link to actual fic:
https://archiveofourown.org/works/55407130/chapters/140582125Series
- Part 1 of notes for active fics
- Language:
- English
- Words:
- 1,541
- Chapters:
- 3/?
- Hits:
- 52
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Cross and Epic are the most legendary thieves in the whole world! But there is just one teeny tiny problem…that is actually…not…true, heh.
But it is okay! All they need is an opportunity to show the world what they are capable of!
And an opportunity is exactly what they got, all they need to do is invade a rich guy's mansion and steal an artifact that only existed in legends.
What could possibly go wrong!?
(Answer: a lot.)
Or, follow Cross, Epic, and a very questionable new addition as they try to build a name for themselves without getting caught, killed, or completely derailing their own plan.
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A bittybones breeding facility that specializes in parthenogenesis. It takes bitties otherwise lined up for being put down, and receives one of the rarer kinds... it's a nightmare
the focus in here is on big bellies. do not expect real classical sex from this. they do not have genitalia.
Series
- Part 1 of Undertale Puffs
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\\Sweammare\\ Sympathy...? by Anonymous
Fandoms: Undertale, Undertale (Video Game), dreamswap - Fandom
23 Jul 2026
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This is a old fic. (I never posted it.)
Series
- Part 6 of Sweammare Angst
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//Sweammare// Good Night. by Anonymous
Fandoms: Undertale, Undertale (Video Game), dreamswap - Fandom
23 Jul 2026
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This is a old fic which I wrote a few years ago. Now I am posting it here.
Series
- Part 7 of Sweammare 18+ Collection
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I HAVE RETURNEDDDD
I made something.
Do not eat it.
It is poisonous.
NO STAY BACK STOP YOU’LL GET SICKJokes aside please read this
After your father tricks you into meeting with the largest crime syndicate in the city, you’ve unintentionally bound yourself to them. Now trapped with a lot of morally questionable skeletons, you find yourself struggling to find a way out of this mess.
UPDATES ON THE 20th OF EACH MONTH
Title is currently a placeholder, if you have any suggestions just drop them in the comments!
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Dust is the smallest sans he had ever met and he... didn't like it.
Series
- Part 1 of Where will you go?