The Vault of Secrets is a secret feature of Geometry Dash and Geometry Dash World, being introduced in Update 2.1. It is located through a padlock in the upper right corner of the directive menu, requiring 50 diamonds to gain access.
The Vault of Secrets contains a text field and a mischievous padlock button below it, going by the name, the Keymaster, although its actual name is Glubfub. Pressing the button will cycle through a series of responses and clear any input in the text field. Entering certain phrases will unlock Icon Kit rewards and secret coins, as well as any related achievements. Hints in the form of green phrases are provided every so often to help guess the codes.
- Exiting from The Challenge will cause the main theme soundtrack to play instead of the Vault of Secrets theme.
- The Keymaster still says "Door is now open. Oh wait, no it's not" even if the door is opened.