Genociderun Stories

60 Stories

Who Says You're the One in Control? by ColorfulNoodle
#1
Who Says You're the One in Control?by Colorful Noodle
Papyrus is dead. As are over 100 of the monsters in the Underground. Now it was just Chara against Sans in the Last Corridor. Already prepared to die here, Sans fights m...
Flip My Switch [Mettaton x Reader] by mumbling_intensifies
#2
Flip My Switch [Mettaton x Reader]by nipnopopolis
A certain self-obsessed robot decides that he is your new best friend, and you don't particularly feel up to objecting. And your life is good, with your sister returned...
The Royal Executioner (Reader Insert) (Undertale) by ThatUsernameUsed
#3
The Royal Executioner (Reader Inse...by ThatUsernameUsed
Many of you have heard of The Royal Judge, Sans. But, have you heard of The Royal Executioner? His name is Y/N, and he is The Royal Executioner of The Underground. He th...
Life Can't Be RESET [UnderTale] by Dragonfire719
#4
Life Can't Be RESET [UnderTale]by Kaitlyn
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 ca...
Genocidals by Charasinner
#5
Genocidalsby Charasinner
Chara is on her tenth genocide run. She doesn't plan on stopping anytime soon. Sans, her judgement, has given up. He's fine with Chara walking in, killing him, then walk...
Kids like YOU (Sans x  reader) by LockerGeekArt
#6
Kids like YOU (Sans x reader)by NeverCeaseToAmaze
Sans loves you... and he will do ANYTHING to have you...
Disbelief by hmong7777
#7
Disbeliefby hmong7777
At the end of every genocide run, Frisk duels with Sans and wins. However, what if Sans begins to care once more and takes the blow in replacement of Papyrus? Who will l...
Completed
Innocent Chara pictures by ThatAkutagawaKinnie
#8
Innocent Chara picturesby StarIsEnby
⚠️TRIGGER WARNING ⚠️ Self-harm and suicide Mainly angst and some evil Frisk(yes I know that Frisk isn't reasonable for genocide and it's you the player's fault) and some...
Selfless Determination [Undertale Fanfic | Sans x Reader] by momofroggy
#10
Selfless Determination [Undertale...by froggy
Sans breaks the universe by managing a dodge at the supposed final battle blow during a genocide run. The timeline, the universe was broken. The only way to repair the...
Paying For It (Classic!Sans X Genocide!Reader Oneshot) by HolyCrapSpace
#11
Paying For It (Classic!Sans X Geno...by Lana
Why did you do it...? How could you? Well, now you were punishing yourself... WARNING Contains self-harm!!
Completed
La bête noire (One-shot) by OkameArt
#12
La bête noire (One-shot)by Okame-Art
Quelque chose de vraiment étrange ce produit dans les recoin sombre de la sphère. Et Ink, le gardien de la création, est bien décidé a chasser le coupable. Car cette fo...
Hold Me Till I Break by DearAlexander
#13
Hold Me Till I Breakby ImUnknown
In which no matter how much Frisk carries the sins on her back. Sans will always catch her when she falls.
Control Freak by pikakid47
#14
Control Freakby pikakid47
This is my story of the Genocide run in Undertale. I will be calling Frisk and Chara both by Them They or Their pronouns. The cover is made by my friend KatRidgewell. Un...
The CONSEQUENCES of your ACTIONS by Ubiety
#16
The CONSEQUENCES of your ACTIONSby Ubiety
They've finally had enough. It's time for this to end. And Frisk will finally understand what happens when you push someone too far. "Do you think that even the bes...
Undertale: War of Souls by authorofworlds
#17
Undertale: War of Soulsby SUBJECT VIEN
Frisk, the final human, has finally fallen into the Underground, her soul ripe for the taking, or so they'd thought. When this human begins committing genocide throughou...
Undertale One Shots by KachiSertona
#18
Undertale One Shotsby Kachi Sertona
Lots of little one-offs and side things. Enjoy! (No shipping included)
LESSER KNOWN AUs ADVENTURE by RosethornMlp
#19
LESSER KNOWN AUs ADVENTUREby RosethornMlp
The rewrite of the original; LESSER KNOWN AUs SLEEPOVER! This fanfiction is basically what it sounds like, containing many AUs that you probably NEVER heard of. Here's a...
DevastationTale by HarpieNight
#20
DevastationTaleby HarpieNight
A spin off story for a Oc i make for the fandom, it takes place after the genocide run, by an unknown assailant, who turned everyone to dust, an Alphys would then take...