I have an Idea for an Undertale AU. And apparently, it's a good idea? So here, have a book. --- Long ago, two races ruled the earth. But when a plague of corruption swept through one species, causing a half of their population to attack the humans, the humans thought it safer to banish all the monsters underground. Now, the Underground is a Battleground. The battleground of the Pure and Corrupt armies. This Is UnderCorrupt. -- COMPLETED!

It's been almost 9 years since I left the underground after acquiring the King's soul. The monsters there thought that I would be the savior, the angel who had fallen from the top of the mountain to save them and bring them freedom, and once again I disappointed them all. However, I believe I still have a way to go back and fix my mistakes. There's still a way to keep my promise. I will come back. ---------- This story contains Frans (Sans x Frisk) mainly, so if you don't like it, don't read or say anything, just ignore it 😎👌 Game credits: Undertale / Its characters - Toby Fox Horrortale / Your characters - SourApple Studios Hope you like it!

This is about Undertale (again) and its when Asgore was just becoming king, Toriel was getting married to Asgore, Dr. Gaster existed, many memories. Sad. Okay? Just.Sad. In this story this is when everything goes down. Gaster dies, the king and queen break up, and last but not least, what Sans and his little brother do once their father dies.

SANS HAS BEEN POSSESSED BY FLOWEY!!!!!!!!!!!! With their remarkable power they're able to take away Frisk's ability to reset. Flowey, in total control over the fusion, shows no signs of his motive, or what he wants. Frisk tries to fight back, they've lost everything, and are not ready to take them on. But they, one day, find thousands of piles of ashes, they've been killing this whole time and they didn't see it. Will they be able to free every monster in the underground, not to the surface, but from Flowey? Read your bad nightmare to find out.

Papyrus finds himself curious about the machine Sans has behind their house. When he accidentally activates it, he ends up sending himself to the world of Underfell. Meanwhile, Underfell Papyrus is sent to Underswap and Underswap Papyrus finds himself in Undertale. Now they must find a way to swap back to their own universes.

I don't know how much longer I can go on. It came so suddenly, during a time when I had least expected. And now...I don't know if I will be able to escape. Vines wrap around the sleeves of my blue hoodie, causing me to give up any and all control. They continue down my body and to the ends of my legs, making my steps copy and unnatural. As they move me forward, I do everything in my control to go back. "Quit it trash bag!" The voice that is literally in my head screams. I fight even more. They can't hold onto control forever, can they? I try to speak, but vines around my neck prevent me from doing anything too risky. It wouldn't take much for a soulless flower to decide that he's done with me as his puppet. I never liked being responsible for too much. Even when I had to take care of Papyrus, I knew that all I had to do was keep him happy. And then we would be fine. But anything else, like becoming the Royal Judge, made me feel as if I was adding another string for the puppeteer to control. And that never sat well with me. But now... I have no control over anything. [Artwork is not mine, I have the art skills of a rock] [#1 floweytheflower]

2-P notices something off about the lab, which concerns Gaster when he sees that he's right. Something isn't the same. And between the returning parental feelings and Asgore worrying for his health, the Royal Scientist isn't sure what course of action would be safest. A Mercyplates fanfic. Handplates was made by Zarla on Deviantart, who does some of the best Undertale art I've ever seen. Cover art by SkellyDoodle on DeviantArt, which I found on Google Images.

(Currently under revision and editing) A story about classics journey through the multiverse (and his own mental state) that doesn't have any relation to Underverse.

Dusttale. A Korean Undertale AU. Sans completely has lost his mind and there is no way of stopping him. Unless you kill him for the second time. At first you didn't feel regret until this particular incident happened. Chara is even intimidated and scared. Sans isn't normal, and everyone is dead. But you didn't kill them. LV 19. V.S. another LV 19.

Pacifist. Neutral. Genocide. SAVE. LOAD. RESET. Over, and over again. Living through an endless loop has started to take its toll on Sans. Eventually, he just doesn't care anymore. It's the same routine, scripted as if it were some endless book, a never ending cycle. Becoming withdrawn is one thing, depression is another.. Thoughts of suicide is when things get out of hand. Especially when people start to notice. So after monsters finally make it to the surface, they get a little worried for their skeletal friend. Too bad it'll just repeat again... Right? [WARNING: story contains depression, PTSD, graphic violence, and thoughts of suicide, more info inside] (I do not own cover image; can be found in my "favs" on my DA. All rights to their respected owners.) Be aware, I started writing this when I was , like, 14. While some of it's nowhere near as cringy as I expected, I advise you stick to at least chapter 3 until you decide if it's worth reading or not.]