UNDERTALE: How to Unlock the Mysterious Door
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Here is an explanation about the Mysterious Door in Undertale. Use this as a reference for your Undertale gameplay!
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Location of the Mysterious Door
Inside the Cave Below the Cliff in Snowdin
| Map | Details |
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The Mysterious Door is located inside the cave below the cliff in Snowdin. It is the area where Glyde appears if you keep moving for about 3 minutes before the Papyrus battle.
| How to Find and Spare Glyde |
How to Open the Mysterious Door
Avoiding All Names in the Pacifist Route Ending
The Mysterious Door in the Pacifist Route ending unlocks by avoiding all displayed names. If successful, you'll see a message, "It seems like a door opened somewhere...!" Proceed and return to Snowdin to investigate
| Undertale Pacifist Route Walkthrough |
What is the Mysterious Door
One of the Hidden Elements
The Mysterious Door is one of the hidden elements in Undertale that does not affect the story. It allows players to enjoy developer and backer related content such as the game creator and the Annoying Dog.
List of Useful Guides
Story-related Guides
| Story Routes and Branches | Story: N Route |
| Story: P Route | Story: G Route |
| Dating (Friendship) Events | Papyrus's Date |
| Undyne's Date | Alphys's Date |
| Temmie Village | Hard Mode |
| Endings: N Route |
Helpful Guides
