Genociderun Stories

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...

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...

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...

Sans loves you... and he will do ANYTHING to have you...

Part 1 to Chevron's (my) story. Frisk goes on a genocide run out of curiosity, then he meets someone of interest. Determined to befriend Chara, he continues to do genoci...

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...

It's the world against you or you against the world. Or, in this case... You against me or me against you. Your choice. Either way, I win.

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...

⚠️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...

Chara had Frisk's soul, but Sans remembered everything. He couldn't understand why Frisk did it, but they refused to let Chara reach the surface. This story takes place...

During one Genocide Route, Chara stops into the hall ready to have a bad time, only to meet... nothing? A fic in which curiosity kills the cat, and satisfaction brings F...

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...

Just my way of interpreting Sans's thoughts in Judgement Hall. Lil feelsy maybe to some but also very spoily. Read at your own risk :3 Also it's rather short. Like very...

Just a random oneshot. Possible Genocide and game spoilers. Contains nearly everyone's favourite couple and some swearing. While everyone crowded in the refuge, a huge l...

A written version of the genocide deaths. Comment who you'd like to see next!

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...

This story is about the acclaimed infamous genocide run of the game called undertale!

(An Undertale story. *gasp* no way) I stepped onto the snowy Earth, trembling with each struggled step, my skin peeling away around me, my h...

Alphys has to make her stand, she's not a fighter, but Mettaton was. It was time to build her very own squadron of elite robots using the only ghosts stronger than monst...