1 - 20 of 64,152 Works in Undertale (Video Game)
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This story explores how the multiverse changes when negativity finally outweighs positivity. It follows the multiverse, Nightmare's gang, and the way they are affected by these events. The tone is mostly dark, but there are moments of light along the way.
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Bewitched, Bothered, and Bewildered by CrimsonAndCloverOverAndOver
Fandoms: Undertale (Video Game), Mafiafell - Fandom
21 Jun 2026
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Cherry Sweet is a rather unconventional performer at a club like 'The Velvet Crop' with her thick thighs and plush stomach, but she does well enough for herself. The patrons enjoy a bit of variety, but what will she do when she attracts the attention of a monster--and a mob boss monster at that?
Featuring a 1920's vibe with music from the 20's-60's, a meet-not-so-cute developing into a partnership, and a spitfire, plus-sized FMC. I hope you all enjoy!
Series
- Part 1 of Get Boned
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When life gives you a gun, you're gonna shoot. by Quinme
Fandoms: Undertale (Video Game)
21 Jun 2026
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One moment you were on the call with your friend, the next you are in a shady dark alley, pressed by... a crocodile in fedora?
Life is confusing, and you have no damn idea where you even are and what will come next.
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Memoirs of an Angel's Messenger by absurdmagewrites
Fandoms: Undertale (Video Game), Fellswap Gold-Fandom
21 Jun 2026
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10 years old is really young, isn’t it? That’s how I felt when my mother abandoned me, and left me with a father I’d never known. At the time, I felt betrayed, and unwanted, but later...I knew she’d done me the greatest favour a mother could do for her son.
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A long time ago, two races ruled the Earth: Humans and Monsters. One was feared for the power of their souls; the other, for their ability to absorb them.
Fearing their power, the humans declared war on the monsters. The monsters resisted for as long as they could, but in the end, they fell before the strength of hatred and fear.
The few who survived were sealed beneath Mount Ebott by seven powerful sorcerers.
A long time later...
It is said that anyone who climbs that mountain is never seen again.
In my case, I didn't even have a choice. I didn't decide to climb it, I...
Uh...
I was simply thrown in.
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What a beautiful SUICIDAL song…
01100100 01101111 01101110 11100010 10000000 10011001 01110100 00100000 01111001 01101111 01110101 00100000 01100001 01100111 01110010 01100101 01100101 00101100 01010011 01010100 11100010 10011000 10000110 01010010 01101011 01100101 01110010 00111111
-by 000
- Language:
- English
- Words:
- 1,683
- Chapters:
- 2/2
- Hits:
- 7
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Mandatory Harry Potter AU by destroyerofvoidsss
Fandoms: Undertale (Video Game), Harry Potter - J. K. Rowling
21 Jun 2026
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" Nearly four years ago, if someone told him he'd be going to a school of magic, Gradient was sure he'd laugh in their face. He wasn't the social type, but he'd do it anyway, because it was just ridicolous enough, just insane enough, just fantasy enough that not laughing would look weirder."
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Author's self indulgent Harry Potter x UTMV x Human AU crossover fic made for shits and giggles. Warning in advance for mediocre writing.
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Sans Tumbles Through the Multiverse Headfirst by PapilioVolens
Fandoms: Undertale (Video Game)
21 Jun 2026
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Sans has finally managed to fix the reset issue. It only required the deletion of a vital character. The barrier is broken, and time finally begins to move again. Recovery is slow, but Sans finds solace in his dreams. By the time he realizes his dreams of other universes are real, he has already grown attached to their residents. And then he's attacked at home and is thrust into the multiverse proper. He finds things very different from how he expected. His old friends don't recognize him, and some of them appear suspiciously older.
It doesn't take long before Sans starts to suspect that he may have a larger role in the multiverse than he predicted.
I wanted more Classic adventures through the multiverse, so here's my contribution. And cause I'm me, I can't help but try to make a saga out of it.
Features Classic being Classic, strange multiversal mechanics, and a sleep-deprived author who 100% knows what they are doing
Life is theoretically done being a bitch.
Series
- Part 1 of STTMH
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Before the events in Undertale, the world was different. This is the story of the dragon Asriel who fell deeper and deeper, making stories in stories to escape an intolerant reality.
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A story about Ink and Co. being space pirates and are living in the vastness of space.
Dream and Nightmare are immortal pirate captains, well known and feared among merchants and other sailors alike as Burning Sun and Kraken.
Ink, also immortal, is a member of Dream's crew and has been his closest friend for as long as he can remember.
It's a dangerous life they live with the guard hunting them down and trying to kill them.
So what happens when Dream and Nightmare get a call asking for help from the very guards that want them dead, offering a full pardon for their crimes if they do.
All they have to do is catch someone who is known as the 'Destroyer' and bring them in, so they can be dealt with permanently.
Problem is, no one knows who that is.Series
- Part 1 of Space Pirate AU
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Somewhat Canon Shitposts by Someusername473738
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
21 Jun 2026
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A collection of random nonsense that are somewhat canon in the AU but over exaggerated for humor.
Latest Chapter: Frisk makes a mistake
Series
- Part 8 of Unnamed Cocoapowder AU
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The old legends state that whoever controlled the fruit of the tree of feelings could control the whole multiverse. That’s why Dream and Nightmare were created to guard it. With the tree gone, the fruit lies within the twin spirits. But the old legends haven’t faded, and someone wants the power the fruit would grant. Both Nightmare and Dream have been captured, held captive together by someone who wishes to claim their power and their essence for themself. Meanwhile, the Bad Sanses team up with the remaining Stars to get their boss back.
Posts every other Sunday
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Gaster tutted. "You'd truly throw away your future - the future of all monsterkind - for him? For her? For a lost child? For a broken television? For an orphan and a machine that cannot be fixed?"
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Undertale Trash Heap AU: Spamton's chance to be a Big Shot comes from Dr. Gaster, the Royal Scientist. But Gaster is hiding something from him.
Freedom has a cost. And in this universe, it won't be Spamton who pays the price.
After all, he has a family waiting for him. Doesn't he?
Series
- Part 9 of [A Trash Heap.]
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After having dinner with your mom and younger sibling, you were on your way home, and without realising it, you walked into a different world. Now stuck in an alternate universe and trapped in the body of an older version of yourself, you try to figure out how to get back home.
That's not such an easy feat when you don't know the first thing about the multiverse. You're about to discover how difficult surviving in this universe will be, let alone making your way back home. Especially with the darkest secret of the world haunting you at every moment—and your growing attachment to this gaggle of skeletons.
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Fox from the Surface by SlovenianBirb
Fandoms: Undertale Yellow (Master Sword Video Game)
21 Jun 2026
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While walking through the Dunes to clear his mind a little, Chujin encounters a human infant.
He decides to raise the child even if his reasons aren't completely pure at first. -
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Sometimes it's worth putting the phone on silent so that no one can disturb you, but definitely not when Ink suggests it. He rarely has ideas that don't lead to some unwanted adventures.
Series
- Part 10 of Drabbles english
- Language:
- English
- Words:
- 1,238
- Chapters:
- 1/1
- Hits:
- 7
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Through Thick and Thin, In Sickness and In Health by KennieMorguen
Fandoms: Undertale (Video Game)
21 Jun 2026
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Killer's efforts will never go unnoticed, nor unsupported. Everyone has bad days, no matter how far down the road.
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Undyne can't find the strength to kill a human directly despite their actions.
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Who would have thought that an argument between you and your sibling would lead you to meeting monsters. Let alone one of them turning into the love of your life.
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Frisk ending flower
- Language:
- English
- Words:
- 41
- Chapters:
- 1/1
- Hits:
- 8