1 - 20 of 172 Works in Ecto-Tentacles (Undertale)
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It’s fun being dead.
Or undead, rather, as your sister likes to correct you. Your dear sister is the kind of person who took her dark arts very seriously. Or, her necromancy, rather. You’ll be the first to admit, you don’t know a lot about her school of magic. She doesn’t know much about yours either, but it’s always enjoyable to discuss magical theory with her. She says it’s not her specialty, but she tends to under credit herself.
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Nightmare has always been distant from his gang for multiple reasons. But deep down, he does love them. How does he show his affection towards them while having plausible deniability? Sex.
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The Sacrificial Skeleton and the Labyrinth of Gods by this_is_my_alt
Fandoms: Undertale (Video Game)
11 Aug 2025
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As a necromancer, you’re used to suspicious stares and whispers of heresy from the townsfolk. It only gets worse after you’re killed and walk Ebott Empire as an undead skeleton. When you hear rumors of a strange settlement that worships the undead, it’s too tempting to resist. The locals treat you better than you’ve ever been treated. That is, right until the moment where you’re dressed up and tied to an altar as a sacrificial bride for their skeleton gods.
Despite their advanced technology and magical prowess, you’re doubtful of their divinity. What kind of gods blush whenever they see a bit of bone?
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I miss the old taste of this couple-
ALREADY UPDATE
- Language:
- English
- Words:
- 470
- Chapters:
- 1/1
- Kudos:
- 8
- Hits:
- 219
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Mermaids are the social butterflies of the sea, living in sunny, shallow water together with the rest of their school. On the other end of the spectrum, meroctopuses are violent, antisocial fucks who like the cold and the dark, and who basically kill any competing predator they see.
But they aren’t stupid.
Red is proof of that, using his traps to hunt for food and saving his energy to ward off predators. So, how does he react when he finds the laziest creature in the ocean stealing his catch?
Bribe him with more food in exchange for peaceful company, of course! The ocean is fucking lonely for giant predatory mer!
Red unwittingly gets saved by those peaceful conversations. Apparently even a cold-hearted predator can fall in love. And from there, their family keeps growing as more lost souls are saved by the siren’s call that sings of peace, love, and family, no matter how terrible of a monster you were in the past.
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You honestly can't remember when you had officially moved into the lodge to be with your datemate. It started as leaving things in his room under the (flimsy) excuse of having stuff for the next time you have an impromptu sleepover—but it was a not-so-subtle takeover.
The others didn't mind it either and were gracious enough to provide you with your own room for when everyone's shenanigans prove to be too much for you, but little did they know that they practically invited the devil herself into their home, because you're the queen of starting some bullshit or doing things for the bit.
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Mermay 2025 NSFW Bingo. Prompts by Sku, Creator of Leviathantale.
⚠️ The Explicit warning is for porn.
⚠️Check out each Chapter summary for warnings ⚠️
*Chapter 1 has bondage and tentacles. Pairing is Error/Ink/Blue
* Chapter 2, Geno/Reaper, prompt Bites and Licks
* Bites that cause blood
* Excessive saliva
* Chapter 3, rated for violence, against human Poachers.
Pairings, the Leviathantale Shiver.Series
- Part 1 of MerMay 2025 Bingo
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A series of SFW + NSFW drabbles/oneshots relating to the Bad Sans Gang being gay and in love with each other.
THIS CONTAINS MATURE ADULT CONTENT
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"I could smell ya from a block away. This is going to happen and it’s going to happen tonight. Ya can fight me, kick, scream, and tell me “no” all ya want if it will ease ya conscious.
Ya can rest easy knowin’ that ya didn’t technically cheat on your husband because I wouldn’t take no for an answer. Call it a gift for your wounded pride.
But I’m still gonna fuck ya. And you’re gonna cum for me." -
What Happens in Space Vegas (Never) Stays in Space Vegas by Acoustic_Meatus
Fandoms: Undertale (Video Game)
14 Feb 2025
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Sans and Red's semi-annual weekend bender in Space Vegas takes an unexpected turn.
Or, the boys wake up in the aftermath of a hasty Space Vegas Wedding and consistently fail to make any wise decisions.
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Vera was an avid believer in the fantastical and magical till an experience in high school causes her to lose faith in magic for years till the appearance of monsters on the surface. Unaware of her abilities she summoned an apple from the tree of negativity and during a night of curiosity becomes corrupted by its power.
After reawakening to look like a monster Veras life turns upside down till a friendly skeleton monster who often buys her flowers reaches out to become her closest friend. In befriending him she's thrust into a new world of monsters, racism, and the multiverse itself as she comes to find out her soul is trying to tie itself to the god of hopes and dreams.
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Не такое уж и далёкое, как может показаться, будущее. Люди азартно заменяют свои тела на бионические, вся жизнь проходит в виртуальном пространстве, а секс в реальности считается чем-то пошлым и отсталым, поэтому повсеместно то тут, то там начали появляться виртуальные секс-клубы, дающие тебе полную свободу в фантазии и самовыражении.
Таким образом Ван Ибо и Сяо Чжань знакомятся, но Сяо Чжань не знал, что Ибо - приверженец "старой школы")Ксюше, которая завела однажды интересный разговор и тем самым вдохнула в слабенькую задумку жизнь.
А также каналу "Бионическая Россия", откуда я черпала теорию и много всего интересного. -
How To Make A Fully Loaded Caramel Apple Pie With White and Dark Chocolate Drizzle<3 by WhittneytheScorpionSuccubus for Mochimunchies
Fandoms: Undertale (Video Game)
01 Nov 2024
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I'm sorry if I'm taking so long, I want to make sure this sweet baby is well cooked and fucking delicious!<3 >:3c
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Cross gets a little carried away while Nightmare and Dream feed from him and the twins are determined to make their little puppy feel good. Killer is a little minx and comes running towards Cross' aroused scent, leading to Nightmare and Dream taking care of both of their wolves~.
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Y/n was a normal girl, born in to a wealthy family. She didn't have to worry about going hungry before bed, going to sleep with dirty clothes or worrying about the troubles of a commoner, as they call it, you'd think her life was perfect, but then why did it feel like it was missing something? She knew where she would end up one day, with a man who only viewed her as a trophy, forced to marry for the benefits it would bring her family, she didn't want that, she didn't want that at all! She wanted to be free, to experience what it's like to go hungry to bed, what it's like to live the life of struggle, as they say, grass is always greener on the other side, this path only led her to a group of certain dangerous skeleton monsters.
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It’s a very… delicate time of year. Or so you’ve been told; you can’t say for certain that you’ve ever been around a monster during their Season. Your stay at Nightmare’s castle has certainly prepared you for all manner of strange and unusual occurrences, but this?
This is a whole different beast.
Series
- Part 2 of PROPAGANDA
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Old version-Honey and Cigarettes are disgusting by RatFemur
Fandoms: Undertale (Video Game)
26 May 2024
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After a rough break up with your cheating boyfriend, you meet a tall skeleton who helps you get back on your feet.
Story is being recycled! New version is available!
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Sitka by Fells_Kitten (SquirrleyCow)
Fandoms: Undertale (Video Game), Underfell - Fandom
19 May 2024
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A story of a much different, darker timeline from: Let It Burn
This is going to be just as dark as Let It Burn was considering it's dealing with the same subject matter only with a different outcome at a pivotal point. That subject being; held hostage, rape (though never with explicit details, it'll be *vaguely* described when it happens), and the mental health recovery from that kind of trauma.
This is an Underfell based fic.
Series
- Part 2 of Let It Burn: Splinters and One-Shots
- Part 6 of Don't You Remember?
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Red is a breeder for the Impostors, an alien race whose main goal is to create chaos and destroy other races while rebuilding their own. He happens upon a set of ships, sending his once-normal life into a spiral of uncertainty and...l...l...love?
I mean, after he gets them all to fuck him, of course.
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//Life was amazing and nothing could change that for the now vice captain of the royal guards.//
A continuation of 'enemies, but at what cost'
Series
- Part 2 of Taking what's not yours
- Part 7 of Berry smut/oneshots