|body = A series of hints in green text can appear between any general response in the following order (needs rearranging) to help guess the codes. Once a code has been entered, the corresponding hint will not be shown again.
|body = A series of hints in green text can appear between any general response in the following order (needs rearranging) to help guess the codes. Once a code again.
*<font color="green">Oh my head...</font>
**<font color="green">I feel so drained</font>
**<font color="green">Would be nice to get some energy</font>
**<font color="green">You know, for my head...</font>
**<font color="green">Nothing? OK...</font> (relating to ''Brainpower'')
*<font color="green">I heard what you did</font>
**<font color="green">You little thief</font>
**<font color="green">You took 'Spooky's' coin</font>
**<font color="green">That is pure evil</font>
**<font color="green">I like it</font>
**<font color="green">I know what you're thinking</font>
**<font color="green">But you will never get my coin...</font>
**<font color="green">I keep it safe</font>
**<font color="green">Too clever for you...</font> (relating to ''glubfub'')
*<font color="green">So... there is a tree</font>
**<font color="green">A very short tree</font>
**<font color="green">In this tree there lives a Witch</font>
**<font color="green">A very short Witch</font>
**<font color="green">The Witch stinks of fish</font>
**<font color="green">My question to you is this...</font>
**<font color="green">On a scale from tree to fish</font>
**<font color="green">How many shinies do you have?</font> (relating to the player's star count)
*<font color="green">Which came first?</font>
**<font color="green">The chicken or the egg?</font>
**<font color="green">...</font>
**<font color="green">The egg, of course</font>
**<font color="green">Then the egg laid the chicken</font>
**<font color="green">... and the chicken said</font>
**<font color="green">The password is on fire</font>
**<font color="green">I need to get some rest...</font> (relating to ''thechickenisonfire'')
*<font color="green">Want to hear a secret?</font>
*'battop': "<font color="orange">He could be watching us right now...</font>"
}}
{{Togglebox
|header = Introductory dialogue
|body = Before the Vault Of Secrets is unlocked, the padlock will be grey. Selecting it will return a notification from ''The Keymaster''.
*I guess you don't like rules...
*RubRub told me not to let anyone in.
*This is not the door you are looking for.
*I don't understand why you keep clicking...
*Trust me, you don't want to come in here.
*You are not ready...
*I can't let you in.
*Player used knock. It's not very effective.
*Don't you have something better to do?
*That is a bad idea...
*...
}}
{{Togglebox
|header = References
|body = <nowiki />
*"This is not the room you are looking for..." is a reference to the phrase "These aren't the droids you're looking for." from the movie ''Star Wars: A New Hope''.
*"You shall not pass!" and "It's my precious..." are both references to the movie series ''The Lord Of The Rings''.
*"Player used knock! Its not very effective..." and "A wild lock appeared" is a reference to the Pokémon games.
*"O-oooooooooo AAAAE-A-A-I-A-U- JO-oooooooooooo!" is a reference to the song [https://www.youtube.com/watch?v=mj-v6zCnEaw NOMA - Brain Power.] The code (Brainpower) also references the same song.
*The code "d4shg30me7ry" was revealed through an ARG related to the Geometry Dash 2.1 Awards, which are mentioned in its hint.
*"You won't like me when im angry..." is a reference to The Incredible Hulk.
The Vault of Secrets contains a text field and a mischievous padlock button below it, referred to as the Keymaster. 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.
Rewards
Enter the codes stated as captions to unlock the respective rewards. Some rewards require additional steps to unlock.
(player's star count)
'cod3breaker' *
'brainpower'
'octocube'
'seven'
[secondary] 'thechickenisonfire'
[primary] 'gimmiethecolor'
'glubfub' *
'd4shg30me7ry'
'thechickenisready'
cod3breaker
Upon entering 'cod3breaker', 6 numbers will appear in sequence, each fading in and out within a second, and must be used to perform mathematical calculations. Each previous term must be subtracted from the following term. For instance, given that the numbers in sequence are 1, 3, 6, 7, 8, 11, the calculations performed would be:
3 − 1 = 2
6 − 3 = 3
7 − 6 = 1
8 − 7 = 1
11 − 8 = 3
The answers to each calculation should then be entered in order as one number. The corresponding code to the above example would then be '23113'.
The code 'glubfub' is initially treated as an incorrect response. First, 'sparky' must be entered in the regular Vault.
In order to steal the Keymaster's coin, you must first steal Spooky's coin. In order to do this, earn 10 user coins, go to the options menu and tap the top right to enter The Vault. Then, enter "Sparky" to steal Spooky's coin. After that, go to the Vault of Secrets and keep clicking the button until the Keymaster mentions Sparky. Then, go to The Vault again and keep clicking the button until Spooky mentions Glubfub. Finally, go to the Vault of Secrets once more and enter "Glubfub".
The Challenge
Entering the code 'the challenge' will make a button appear on the right. It gives access to the secret level The Challenge. This requires 200 diamonds to access. Completing the level will then open the door in the lower right corner, giving access to the Basement.
Trivia
Exiting from The Challenge will cause the main theme soundtrack to play instead of the Vault of Secrets theme.
This only happens from exiting the level. After exiting the Vault of Secrets and then returning, the Vault of Secrets theme will play again.
When inputting the cod3breaker code for the first time, the correct solution for the code will be permanently "stored" in your save file. Every number sequence generated afterwards will always evaluate to the same code.
When inputting Spooky's code to get the "Doomed us all!" achievement into Glubfub's cod3breaker puzzle, you get the output "81421418".
The audio used in The Vault of Secrets (titled secretLoop02.mp3) is one of 3 audio tracks in the game files made by creator Robert Topala that cannot be found on his Newgrounds profile.
General responses
There are 30 general responses which are cycled through in the same order and will repeat once reaching the end.
I have heard about you*
[player's username] the sneaky one...
You think you can fool me
You are deeply mistaken
Go away!
You are deeply mistaken
I should have hid this room better...
You're not supposed to be in here...
RubRub won't like this...
zzzZZZZ...
Don't touch that!*
Why you touch my stuff?
RubRub better not find you in here...
Can't you just leave?
This is not the room you are looking for...
Sneaky sneaky...
It's my precious...
You shall not pass!
Don't push the button!
You're gonna get me in trouble...
This is getting ridiculus... [sic]
Go collect some stars
Maybe there are new levels?
Just, stop bothering me
I'm gonna stop talking
...
......
GAH!
You're hopeless...
Really, still here?
Fine, press the button
The Keymaster will say this when you enter the Vault of Secrets.
{{Togglebox
|header = Hints
|body = A series of hints in green text can appear between any general response in the following order (needs rearranging) to help guess the codes. Once a code again.