Can you open the secret door in Undertale?

Can you open the secret door in Undertale?

Yes, it is possible to open the secret door in Undertale, but only under certain conditions. Here’s a step-by-step guide on how to access this hidden door:

How to unlock the secret door

  1. Earn the True Pacifist ending: You must achieve the True Pacifist ending to have a chance to unlock the secret door. To get this ending, you’ll need to make the following choices:
    • During the initial battle with Flowey, choose the pacifist option to spare Flowey’s life.
    • Continue playing the game without killing any enemies and make choices that align with pacifist morals.
  2. Dodge all Kickstarter credits: After the True Pacifist ending, you’ll reach a scene where the game plays a sequence of names representing the Kickstarter backers who helped fund the game. To unlock the secret door, you must avoid turning any of these names yellow.

What’s under the secret door?

Once you’ve unlocked the secret door, you’ll find yourself in a room with a unique character called Toriel, Papyrus’s sister. In this room, you can engage in a nice conversation with Toriel, and even earn additional rewards and achievements.

Here’s a table summarizing the key points:

Step Description
Earn True Pacifist Make pacifist choices throughout the game
Dodge Kickstarter credits Don’t turn any names yellow during the credits
Unlock secret door After clearing the True Pacifist ending and dodging all Kickstarter credits

Who is behind the door?

The woman behind the door is Toriel, Papyrus’s sister. She is a supporting character in the game, known for her caring nature and strong bond with Sans and Papyrus. Meeting her in this room serves as a reward for making pacifist choices and demonstrates the game’s depth and character development.

Tips and warnings

  • Make sure to spare Flowey’s life in the initial battle to get on the right path to achieving the True Pacifist ending.
  • When interacting with the Kickstarter credits sequence, be cautious and avoid turning any of the names yellow. Turning a single name yellow will prevent you from unlocking the secret door.
  • Save your progress frequently before and after unlocking the secret door to ensure you don’t lose any progress if something goes wrong.

What else can you do after unlocking the secret door?

Once you’ve reached this hidden room, you can:

  • Engage in a nice conversation with Toriel, exploring new dialogue options and deepening your understanding of her character.
  • Earn additional achievements and rewards for making specific choices.
  • Experiment with different dialogue options and playstyles to experience alternative narratives.

By following these steps and being mindful of your choices, you’ll unlock the secret door and get to experience the rich rewards and content hidden within the world of Undertale.


Please note that any information regarding the wrong number song or 201X is not relevant to opening the secret door and may be covered in separate FAQs or articles.

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