1 - 20 of 109 Works in Sans is Having a Bad Time (Undertale)
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Summary
Some random thingy I wrote in the middle of the night- :P
- Language:
- English
- Words:
- 1,236
- Chapters:
- 1/1
- Hits:
- 9
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Same You, Different Font by radskull69
Fandoms: Undertale (Video Game), Deltarune (Video Game)
09 Oct 2025
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Ah yes. The classic ‘’Heather’ convinces the skeletons you’re an evil human so now it’s a EVIL reverse harem’. Right?
Oh? But what’s this? A TWIST?
Sans couldn’t live with himself after what happened to you, going near insane after you’re gone. So behind the others back he uses the machine to undo what he did, except it didn’t. He can still feel his sins crawling on his back.
Oh well, it’ll all be worth it once he has you back in his cold hands again. Screw the other skeletons.
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There was no hope.
There was no way out of this place. Sans knew that from the depths of his soul- he couldn't escape on his own. But without any way to contact anyone and no knowledge of where he's trapped, all he could do was try to survive... or maybe just hope for death.
No more resets, after all.
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The king has fallen.
In the devastation left in the human's wake, a new king is needed. Papyrus steps up to the challenge, assisted by his brother.
Sans is sworn to obey the crown, bound by the Delta Rune. Regardless of who wears it.
But when dark alternates show up and threaten war, Papyrus has to make the hardest decision of his life, and Sans finds out the chains that bind him might not be as secure as he'd like.
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He was a bad brother. He knew that. He didn’t need all of this shit to happen for him to acknowledge that.
...Whatever it is that’s happening at this point.
Or
Papyrus made a stupid mistake and now sans is gone.
Series
- Part 1 of MeryFell
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Or: The one where an adult Frisk wakes up after their funeral, back at the beginning of everything. Of course, they know how to navigate all their adventures underground, but... Does anyone want to tell them what kind of sin they committed? After waking up each time, in different timelines, some of which they even know they generated, and others that they themselves didn't commit? Yeah, this isn't going to happen (it happens anyway).
Series
- Part 3 of Random Writing
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And so the rotted pits stared into the frozen beyond
Distantly remembering being frustrated, proud, angry.
Devastated.
But they were too tired for any of that now.They turned back to the deceptively welcoming house.
Still there, even after everything.
It shouldn't be
A house is only as good as the people in it.ORRRRR
Sans is handling things AWESOME after everyone he loved has kicked the bucket
Yessiree no negative feelings here
Insert Steve Griffin Death Pose -
Spending Spring Break Underground by 4Trixs_Animations3
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
18 Sep 2025
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Once upon a time many centuries ago, the world was ruled by two species: Humans and Monsters. Both of these creatures thrived together using their special talents to help one another. That was until the humans declared war on the monsters out of the blue. This led to the monsters to be banished beneath a mountain.
But rest well when I say the humans suffered their karma. Without monsters they soon lost their magic, along with their way of life. They developed their own powers called quirks, with this power came the raise of heroes and villains. Quirks were quick to spread until only 20% lacked them.
It wasn’t long before magic and monsters were reduced to legend. This led many to climb the mountain to see if the legends were true, only to never return. This was because of the heartbroken monster king who put a bounty on every human who fell.
When the last human fell, the monsters were ecstatic. Finally they’ll be free to wander the surface and feel the sun and the rain again! But unbeknownst to them, they have become even more trapped than they had before. With each reset the monsters were forced to live the same day over and over without anyone knowing ... .Well, almost everyone.
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Half-Tale: The Fallen by HolmesJaw
Fandoms: Undertale (Video Game), Half-Life (Video Games)
15 Sep 2025
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Adrian Shephard, an HECU Corporal shipped off to Black Mesa for 'cleanup duty', somehow manages to escape the hellish facility against all odds and, after being 'detained' by the ever-so elusive G-Man, is assigned a mission... to the UNDERGROUND! Accompanied by Chara Dreemurr, the first fallen human turned apparition, they venture through for one, very specific goal... but is that all there is to it?
In... time, all will be revealed.
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Unfinished (occasionally dubiously-canon) snippets, deleted scenes, alt povs, pre- and post-canon junk, and some AUs within the universe of Gossip Merchant.
Series
- Part 3 of Gossip Merchant
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A strange infection has broken out across the Underground.
Echo flowers have become strangely hostile and aggressive, attacking and infecting monsters and taking over their bodies.
Most of the Underground has become completely overgrown by these dangerous plants, and only a few safe zones remain.
Sans, the Royal Scientist, must figure out a cure with the help of his assistant Alphys, before everyone he loves becomes infected by the echo flowers.
When a human falls into the Underground, Sans must figure out if they're the key to saving everyone, or the harbinger of doom for his friends and family. -
Fatal Obsession: The Collapse of Nagito Komaeda by TheMightyNooters
Fandoms: Undertale (Video Game), Super Dangan Ronpa 2, Dangan Ronpa Series
20 Jun 2025
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Nagito exploads bc he is so inlove with Sans11!!!111!!!!!!!!1
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How Do You Kill a Time Traveler by ZJFoster (toxicnuts69)
Fandoms: Undertale (Video Game)
15 Jun 2025
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let me describe to you a hypothetical situation. you are a time traveler. you work in the business of space and time and whatever distortion that may be caused by any such anomaly. timelines jumping left and right and the space-time continuum would be bursting at the seams if this loop wasn’t trapped in its own bubble, making your job of discerning who being positioned where in time in space irrelevant and admittedly— a lot easier. your job is to do whatever it takes and whatever you can to shut this down, even at the risk of your own life. you just wish he wasn’t here with you. even though he needed to be. couldn’t he have taken the day off? you can’t help but wonder how many times you’ve stepped out that door.
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Under the Water Oak Tree by BubblyShip
Fandoms: Undertale (Video Game), Hazbin Hotel (Cartoon)
14 Jun 2025
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Alasor had this tree in his room. Native to New Orleans, with thick narrow leaves that cascaded up into the dome of a ceiling. Just past that, the architecture was anything but quaint- with fire flies buzzing about the air of green and blue foliage. Somewhere, somehow, the sound of nature always chirped from that centerpiece tree.
Sans would have found the tree appealing. If he wasn’t trapped with it.
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Alastor weaseled his way to some fanciful contracts when a sudden influx of monsters in hells population occurred. One of those unlucky souls was a certain skeleton Alastor took a very intense, platonic liking to.
Sans is thoroughly not amused.
Series
- Part 3 of Sans x Alastor
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POV: You're a ketchup bottle and Sans is hungry.
Series
- Part 1 of Crack Sans/Reader One Shots
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Cambria wasn’t supposed to survive the fall. But she did. And now the Underground won’t let her leave. Every time she dies, she doesn’t reset—she overwrites.
A slow-burn Undertale canon divergence featuring glitchcore, found family, emotional trauma, and a girl the world keeps trying to delete.
✧ Angst-heavy | OC-centric | Soft horror | Sans x OC | Overwrite mechanics | Sad girls who don’t stay dead ✧
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Drunk On Power (And Ketchup) by Cat_On_A_Keyboard, Chill_Phil
Fandoms: Undertale (Video Game)
17 May 2025
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Frisk has been trapped in the same loop for longer than they care to track. They can now consistently break the barrier or get to 20 LV without taking any damage. After getting to Snowdin (again), Frisk decides to try something different.
Proofreading by Chill_Phil
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- Language:
- English
- Words:
- 1,030
- Chapters:
- 1/1
- Kudos:
- 5
- Hits:
- 46
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A secret locked away by ftfan95
Fandoms: Mother 2: Gyiyg no Gyakushuu | EarthBound, Undertale (Video Game)
08 May 2025
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Sans is actually from another world, after a failed attempt to get to his world after defeating Giygas. The young boy wakes up in another world, as a monster with a human soul that he desperately tries to hide. Throughout constant resets, his mind and heart break down until he becomes almost unrecognizable as the emotionless but jovial monster we know him as.
Then elements of his past turn up and he begins to break from the inside out.
Old fanfic, will be getting a complete and total revision once I finish revising my other fanfic. This writing is nine years old. I was 22 then.
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There’s a reason Papyrus always wears gloves
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Papyrus has been hiding something from Sans. One day his gloves get ruined and Sans finds out
Series
- Part 4 of Sans has fucking depression