The Underground Archive

This is an unofficial fan archive for Undertale, the 2015 role-playing game written, composed, and mostly programmed by Toby Fox. You wake up in a cave beneath a mountain, share the Underground with monsters who were sealed away by humans centuries ago, and decide — fight by fight, choice by choice — who gets to keep breathing. The game keeps a running tally of every one of those decisions, and it does not let you forget them.

Nobody has to die. That is the sentence the game leads with, and this archive exists to catalogue the characters, places, routes, and lines of dialogue that make good on it — or don't, depending on what you chose to do with the button that was always sitting right there.

Best experienced determined.

• Characters

  Skeletons, a fish woman, a goat mom, and a flower with opinions. Bios for the monsters and humans of the Underground.

• Locations

  From the fallen leaves of the Ruins to the furnace-heat of Hotland — a field guide to where the story happens.

• Routes

  Neutral, Pacifist, and Genocide: what each playthrough asks of you, and what it gives back.

• Quotes

  The lines players still quote years later, collected with who said them and when.

• Soundtrack

  Toby Fox's score, track by track — the leitmotifs that turn up again three areas later and mean something different.