Begging for Undertale Fics, AUs Are Fine Too. Preferably Long and Still Updating 跪求undertale的书，au也行，最好长一点，没断更
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51
Transmigrated as Sans, I Go Around Looking for Fun 穿越成sans到处找乐子
Looking and looking for fun, and finding a little fun. Someone transmigrates into Sans and awakens a Fun System. They are determined to travel between every AU.
40Reads—Score—Shelves
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- 52 A Mad, Mad World 疯一样的世界 A quiet, ordinary life is what matters. No transmigration, all-nightmare, OOC series. After countless cycles, Nightmare plans to make himself disappear. 124Reads—Score—Shelves
- 53 The Boss Is So Adorable Boss亲超可爱 [Undertale AU + Nightmare + My Own OCs + Just a Derivative Work] *UTAU school-life AU *No CP, lots of friendship *This work is based on “Feather’s Half-Dead, Half-Alive” *Created by Feather!Sans *I don’t know anything, I’m just making this up. Feel free to point out logic problems, but don’t come to me if the setting doesn’t make sense. I never went to college. 61Reads—Score—Shelves
- 54 National Fate: Is Geno Going Home Today? 国运：geno今天回家了吗？ No humanized characters. The cover is mainly because I can’t draw skeletons ( It’s a national fortune survival game (sigh) + livestreaming + a bit of power fantasy + no roleplay + OOC + some characters get redeemed (like Killer) + some unofficial settings and headcanons + some characters have boosted combat abilities. The writing is bad, it’s very OOC, and I feel like I’ve made the characters act weird. The plot is also pretty unhinged, so don’t think too hard while reading. The CP is undecided 146Reads—Score—Shelves
- 55 UT: Deviation ut：偏差 [Undertale derivative + heavily altered setting + OOC + Nightmare gets put through the wringer + no romance in the main story, I love platonic pairings!] If everything deviated from how it was supposed to be, if everything changed, I think I’d say that we are not redeemed, we are not forgiven, and we don’t need the judgment of bystanders, because we are simply ourselves. (This blurb is a mess, don’t mind it.) This story came from the author’s frustration with the original Dreamtale setting and 232Reads—Score—Shelves
- 56 Nightmare Is Busy Again Today Nightmare今天也在忙碌 Updates are irregular for now, with each update being at least 1,000 words. Also, the author is terrible at coming up with names, so the chapters won't have titles. (All right, really, I just want to be lazy.) Please don't blame me if my writing isn't very good. (I did warn you in the title, after all.) The characters might be OOC at times. I'll try to stick as close to the original characterization as I can, but I'm not their mom, so they might not always be completely in character. Also, if so 88Reads—Score—Shelves
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57
My Little Pony: Sans’s Wonderful Adventure 小马宝莉：sans的奇妙冒险
[Undertale] [My Little Pony] [Almost Invincible] [Features fan-made AU Sans] [Cameos] Sans transmigrates to Equestria?! Sans: “I'm not good at much. I'm just a lazy skeleton.” Sans: “What? The Changelings kidnapped the Mane Six? Discord! March with me!” Sans: “Huh? A worm virus? Doctor, lend me your TARDIS!” Sans: “The Dark Mane Six? I have to stop them to keep the ponies safe!” Error, Nightmare, whatever! Purify them all! Queen Chrysalis? We'll teach her to understand love and learn the magic o
102Reads—Score—Shelves
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58
A Journey Through AU 穿越AU的旅行
A strange life was born from the explosion of an AU. Calling himself Lan Gu, he drifts from one AU to another from time to time. No one knows what he wants. All they know is that people who cross paths with him never seem to come to a good end...
3Reads—Score—Shelves
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59
Sans's Guide to Slacking Off in the AOTU Tournament Sans在凹凸大赛的摸鱼指南
“Sans’s Guide to Slacking Off at the Ultimate Contest” is a hilarious crossover extravaganza. An experiment goes wrong, swapping the souls of Sans, the lazybones from the UT world, and the arrogant Leishi from the Ultimate Contest. Sans is forced to compete in the brutal tournament in Leishi’s body, while Leishi, trapped in a skeleton’s body, faces the genocide-route Frisk. Amid the chaos, Anmixin becomes the exasperated guardian of “Leishi,” whose core is a skeleton. The two storylines unfold s
20Reads—Score—Shelves
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- 60 UT: Boss Got Tricked into the National Farmland ut：老大被骗进国远啦 (This story takes place after the first two books have ended! Mom found my main account, so I had to switch to an alt ˃̣̣̥⌓˂̣̣̥) The Dark Night Emperor only wanted to find somewhere to relax, but after lazing around for three whole months, the little Dreamer couldn't take it anymore. No matter where the Emperor went (or, to be precise, lay down), the Dreamer could always find him and try to make him a little more diligent. So the Emperor simply hid in the original timeline, never expecting his w 235Reads—Score—Shelves
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61
Undertale: Her Journey, His Echoes 传说之下：她的旅途，他的回响
(This is the author's first time writing, so the prose may not be very good. Feel free to discuss the setting, but please don't bring your personal headcanons into other works.) This book is also known as Undertale: This Human Is Adventuring Again Today I'm not good at writing synopses. Please head straight to the story. After the multiverse arc begins, the romance will be different from what came before, including the blurb. When he woke up, Ze Peng found himself on a mountain. As he walked for
175Reads6.6Score—Shelves
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- 62 Undertale: Blossoms That Never Fall 传说之下：永不飘落的繁花 (No CP + SF + HE + Upholding RightE = ?) In 201x, at Mount Ebott, Crow heard that no humans who went there had ever returned. So, with a missing-person flyer in hand and a bow on her back, she went to investigate. She saw Frisk trip over a vine and fall into a deep pit, so Crow jumped in after her. After freeing the Underground, Crow thought she had reached the end. But with Flowey’s prompting, she found Gaster and struck a deal with him… She would go uphold justice and grow stronger, while Gast 24Reads—Score—Shelves
- 63 Everything Began with a Mistake, but When Will It End? 一切从差错开始，又到何时结束？ After everything went wrong for the protagonist, he transmigrated to Error Tale, but he didn’t fully merge with the body. His negligence led to everyone in his world perishing, so he decided to travel to other worlds and help the skeletons who were suffering. 26Reads—Score—Shelves
- 64 Undertale: A World Gone Wrong 传说之下，错误的世界 A System that had just passed its evaluation couldn't wait to find its first Host. A Judge who had just experienced an era of peace. Everything seemed to fall perfectly into place, but it was all just part of “his” plan. 50Reads6.5Score—Shelves
- 65 Undertale: Infection and Redemption 传说之下：感染与救赎 (Adapted from Plague Inc. and Undertale: Infection and Redemption) The end of the pacifist route, the beginning of a new life. Interests clash, and even the innocent are not entirely innocent. The epidemic strikes again. Who can stay out of it? With lives on the line, who harbors ulterior motives? "Some things can't be explained by science, just like monsters." Let it all be a long dream. A friend passes away, how tragic. The savior's sigh, how despairing. Why not take this chance to meet once m 35Reads—Score—Shelves
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66
My UT Journey as a Sans Soul 成为sans灵魂的我的UT之旅
A devoted UT fan, Li Xiaoti spent several days gathering every bit of information about UT and building a massive website about the UT universe. But due to health problems, he unexpectedly ended up in the world of UT, bringing the website he had created along with him. The bad news was that he was only a soul. The good news was that he was Sans's soul. When he suddenly looked at Sans, he saw more than just Sans before him: a faint image of Killer appeared too...
190Reads7.1Score—Shelves
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67
Underfell: From the Start, I Have Sans's Abilities 传说之下开局就有sans的能力
Liu Yang stumbles upon a System and gains Sans’s abilities. He can use them in the real world or transmigrate to various AUs to help or destroy the worlds of other Sanses. What will he do?
70Reads6.8Score—Shelves
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68
Undertale: Sans and the New Parallel Universe 传说之下：Sans与新平行宇宙
Gaster discovered the truth about Undertale, and the mysterious deal finally came to an end… When Sans wakes from a deep sleep, he finds that his powers are growing stronger, and everything around him seems different than before… What is the price of power? Sans sets out on a journey to find the answer, witnessing the monster kingdom’s new development along the way, until… He meets two humans… P.S. This is the author’s first book, so I’m still pretty nervous…
17Reads—Score—Shelves
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- 69 UT: Sans’s Adventure UT：sans的冒险之旅 [System + Sans + UT + transmigration + Dust + invincible] Sans accidentally awakened a System when he died. With its power, he grew stronger step by step, eventually becoming able to defeat humans with ease. Later on, beating 404 was no problem at all! (The beginning might feel awkward, but it gets better later.) (The synopsis isn't doing it justice. Please check out the main text.) 1Reads—Score—Shelves
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70
When Sans Can Transmigrate Between AUs 当sans可以穿越au
The protagonist transmigrates into Murder Sans, equipped with a System. He punches Error 404 and kicks the King of the Multiverse (just kidding). He might reach demigod-level strength later on.
3Reads—Score—Shelves
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71
Slay the Gods: The Lazy Little Mantou Spirit Is Going to Slay the Gods 斩神：懒惰的馒头精要斩神了
[Roleplay + Slaying the Gods + Invincible + Undertale + Sans/AU Sans/Original Sans] Li Sansi got hit by the legendary Big Rig, literally! The very truck said to deliver transmigrators to another world! He was crossing the street while engrossed in a novel, already on his seventh read-through of Slay the Gods. So what happened? He watched other people cross and followed along, dazed and confused... without even looking at the traffic light! And then he went headfirst into the world of Slay the Go
283Reads8.4Score—Shelves
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- 72 Undertale: She’s Not the Protagonist 传说之下：她不是主角 [Transmigration] [No Romance] [Ensemble Cast] [Everyone Is Strong] [A Little Golden Finger System, Redemption, and Wild Ideas] [Antagonist] [Slow-Paced and Lighthearted at First, Then a Transitional Middle] [Happy Ending] A lot of UT players transmigrated into this UT multiverse, a place that seemed peaceful on the surface but was actually rife with undercurrents... Narrator: *Among the people working to protect the peace of the universe, there is a hidden killer with the employee number 103. At 96Reads—Score—Shelves
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73
Zenless Zone Zero: Where Did This Custard Tart Come From? 绝区零：哪来的酥皮蛋挞？
I wake up and find myself in Zenless Zone Zero? But I'm a crispy tart. Sans: “Bro, where the heck did you bring me? Is this still the Underground?” Ethereals: “Don't come any closer!”
389Reads—Score—Shelves
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- 74 The Midnight Café 午夜咖啡屋 This is a story blending mystery, romance, and the passage of time, set in a corner of the city late at night: the 24-hour “Time Capsule” café. Thank you for giving it a read! —Reads—Score—Shelves
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75
A Night at Homebar homebar之夜
The cold letters on the pill reflected the chandelier’s light. Cigar smoke clouded her twisted smile. Beneath her, Liu Sheng’s pudgy fingers were roughly digging into her smooth, expensive flesh. And the pill marked with an “L,” like a poisonous badge waiting to be embedded in the body, foretold another storm of destruction, filthier and bloodier than any game of gold coins, brewing into shape.
—Reads—Score—Shelves
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76
Undertale: Anomalous Timeline undertale：异常时间线
Long ago, two races lived on Earth: monsters and humans... Heh. You’ve heard this story many times before, haven’t you, “Player”? But this time, in the name of “Anomaly,” I unilaterally declare your game over. I’ll save this world from you, and that includes the poor child. I hope you like the little gift I’ve prepared for you. Brief version: In a special timeline, when Sans is replaced by an anomalous being and the truth of this world is revealed from the very beginning, where will the world ul
15Reads—Score—Shelves
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- 77 Undertale: The Journey of Determination 传说之下：决心的旅途 The title is also known as [Undertale: Embers of the Past] [Breaking the fourth wall] [No female lead] [Slow-paced!!!] [System] [Everyday life and battles] The protagonist may be a little crazy (the System barely appears in the very early chapters) Updates every one to three days, and at least once a week (the author is a lazy dog) Even if you haven't played or watched Undertale, it won't affect your enjoyment of this book (because the plot, power system, and so on will be heavily changed) There 6Reads—Score—Shelves
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78
Undertale: A Happy Ending Will Come at Last 传说之下：美好的结局终将到来
An Undertale fanfic (please skip to chapter 40 or later to start reading, thank you. The main plot will still follow the same order.) Plot introduction: This world is different from the original Undertale. For unknown reasons, Frisk keeps taking the Genocide Route, but somehow, Frisk has gained control over their actions. The main goal is to turn every bad ending into a happy one. (It's a multiverse!) About the characterization: After doing the Genocide Route so many times, Fu may not be as inno
2Reads—Score—Shelves
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