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Contents

Ciphers
Caesar cipherAtbash cipher A1Z26 cipherThe Author's symbol substitution cipherCombined cipherNumber codesVigenère cipherBill's symbol substitution cipherDipper's codeCombined symbol substitution cipher

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Gravity Falls: The Complete Series

Ciphers

Caesar cipher

The Caesar cipher used in Gravity Falls substitutes the original letter for the third letter before it. In the case for letters X, Y, and Z, one would have to cycle through to the beginning of the alphabet.

Caesar cipher
Cryptogram A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
MeaningXYZABCDEFGHIJKLMNOPQRSTUVW

Atbash cipher

Atbash ciphers are decoded by reversing the letters. For example, an A turns into a Z.

Atbash cipher
Cryptogram Z Y X W V U T S R Q P O N M L K J I H G F E D C B A
MeaningABCDEFGHIJKLMNOPQRSTUVWXYZ

A1Z26

The A1Z26 cipher is a simple substitution cipher decoded by substituting the nᵗʰ letter of the alphabet for given number n.

A1Z26 cipher
Cryptogram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
MeaningABCDEFGHIJKLMNOPQRSTUVWXYZ

The Author's symbol substitution cipher

Cfa

In Journal 3, a symbol substitution cipher is used. The symbols are hidden on many pages of the journals.
*Note: The symbols for Q, X, and Z are currently unknown.

The Author's symbol substitution cipher
Cryptogram Symbol cipher - A Symbol cipher - B Symbol cipher - C Symbol cipher - D Symbol cipher - E Symbol cipher - F Symbol cipher - G Symbol cipher - H Symbol cipher - I Symbol cipher - J Symbol cipher - K Symbol cipher - L Symbol cipher - M Symbol cipher - N Symbol cipher - O Symbol cipher - P ? Symbol cipher - R Symbol cipher - S Symbol cipher - T Symbol cipher - U Symbol cipher - V Symbol cipher - W ? Symbol cipher - Y ? Symbol cipher - ? Symbol cipher - !
MeaningABCDEFGHIJKLMNOPQRSTUVWXYZ?!

Combined cipher

A combined cipher is a mix of two or more ciphers seen in the show. The first time such cipher has been used is at the end of "Gideon Rises." It's solved by converting to letters using the A1Z26 cipher, then flipping the letters with the Atbash cipher, and finally by using the Caesar cipher. Season 2's combined ciphers start with the Vigenère cipher.

Combined cipher without Vigenère
Cryptogram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
MeaningWVUTSRQPONMLKJIHGFEDCBAZYX

Number codes

These codes are solvable by taking the number beside a parenthesis as an episode number, and the other numbers beside them represents a letter in that episode's credits cryptogram.


Vigenère cipher

Vigenère cipher is a series of Caesar ciphers where each letter shift depends on a key word. Vigenère ciphers use a Vigenère square, like the one below, to encrypt the message. The square is 26 rows of Caesar ciphers starting with a zero letter shift. On each additional row, the shift of the letters is increased by 1.

Vigenère cipher
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A ABCDEFGHIJKLMNOPQRSTUVWXYZ
B BCDEFGHIJKLMNOPQRSTUVWXYZA
C CDEFGHIJKLMNOPQRSTUVWXYZAB
D DEFGHIJKLMNOPQRSTUVWXYZABC
E EFGHIJKLMNOPQRSTUVWXYZABCD
F FGHIJKLMNOPQRSTUVWXYZABCDE
G GHIJKLMNOPQRSTUVWXYZABCDEF
H HIJKLMNOPQRSTUVWXYZABCDEFG
I IJKLMNOPQRSTUVWXYZABCDEFGH
J JKLMNOPQRSTUVWXYZABCDEFGHI
K KLMNOPQRSTUVWXYZABCDEFGHIJ
L LMNOPQRSTUVWXYZABCDEFGHIJK
M MNOPQRSTUVWXYZABCDEFGHIJKL
N NOPQRSTUVWXYZABCDEFGHIJKLM
O OPQRSTUVWXYZABCDEFGHIJKLMN
P PQRSTUVWXYZABCDEFGHIJKLMNO
Q QRSTUVWXYZABCDEFGHIJKLMNOP
R RSTUVWXYZABCDEFGHIJKLMNOPQ
S STUVWXYZABCDEFGHIJKLMNOPQR
T TUVWXYZABCDEFGHIJKLMNOPQRS
U UVWXYZABCDEFGHIJKLMNOPQRST
V VWXYZABCDEFGHIJKLMNOPQRSTU
W WXYZABCDEFGHIJKLMNOPQRSTUV
X XYZABCDEFGHIJKLMNOPQRSTUVW
Y YZABCDEFGHIJKLMNOPQRSTUVWX
Z ZABCDEFGHIJKLMNOPQRSTUVWXY

As Vigenère ciphers a bit more complicated, consider the following example: we want to encrypt the message MABELEATSSPRINKLES and use GRAVITY as the key. We would repeat the key word until it matched the length of the message (in this case, GRAVITYGRAVITYGRAV). Using the table above, we match the message letter to a row and the corresponding key letter to a column and find the letter at their intersection on the table. For example, the row starting with M and the column starting with G intersect at S. The row starting with A and the column starting with R intersect at R. So using our message and the key, the we'd create the following cipher:

Message MABELEATSSPRINKLES
Key GRAVITYGRAVITYGRAV
Cipher SRBZTXYZJSKZBLQCEN

Note that any time the message is A, the cipher letter will be the same as the key letter and vice versa.

Another way to think of Vigenère ciphers is that each letter of the key corresponds to a Caesar shift number (A=0, B=1, C=2, etc.) and for each letter of the message you form a Caesar shift based on the corresponding key letter.


Bill's symbol substitution cipher

Bill symbol cipher

In the book Dipper's and Mabel's Guide to Mystery and Nonstop Fun!, Bill tells readers "I bet you can't even figure out the code I've hidden throughout this book."[1] The symbols are similar to The Author's symbol substitution cipher.

Bill's symbol substitution cipher
Cryptogram Bill's cipher - A Bill's cipher - B Bill's cipher - C Bill's cipher - D Bill's cipher - E Bill's cipher - F Bill's cipher - G Bill's cipher - H Bill's cipher - I Bill's cipher - J Bill's cipher - K Bill's cipher - L Bill's cipher - M Bill's cipher - N Bill's cipher - O Bill's cipher - P Bill's cipher - Q Bill's cipher - R Bill's cipher - S Bill's cipher - T Bill's cipher - U Bill's cipher - V Bill's cipher - W Bill's cipher - X Bill's cipher - Y Bill's cipher - Z
MeaningABCDEFGHIJKLMNOPQRSTUVWXYZ

Combined symbol substitution cipher

CSC - translator

In the canonical copy of Journal 3, besides his regular substitution cipher, Bill uses another cipher to further hide his sinister teasing notes and messages from Ford. Many of the symbols are shared with Bill's symbol substitution cipher and the Author's symbol substitution cipher. The symbols decode to numbers, and from there use A1Z26.

Combined symbol substitution cipher
Cryptogram CSC - A CSC - B CSC - C CSC - D CSC - E CSC - F CSC - G CSC - H CSC - I CSC - J CSC - K CSC - L CSC - M CSC - N CSC - O CSC - P CSC - Q CSC - R CSC - S CSC - T CSC - U CSC - V CSC - W CSC - X CSC - Y CSC - Z
Meaning1234567891011121314151617181920212223242526
MeaningABCDEFGHIJKLMNOPQRSTUVWXYZ


Home Media

Gravity Falls: The Complete Series

Location Cryptograms Decoded Cipher
Back of box set case Twelve-year-old twins Dipper and Mabel Pines are sent to the sleepy forest town of Gravity Falls, Oregon to spend their summer vacation with their great uncle (”Grunkle”) Stan, a shady, carnival-barker-like con man who forces them to work at the Mystery Shack, Oregon’s lowest-rated tourist trap. Although the Shack is filled with hoaxes and fakes, the town itself seems to be hiding a paranormal dark side, with monsters and mysteries around every corner. When Dipper stumbles upon an elusive book hidden in the forest, he realizes it just might hold the secrets to understanding the town. Soon, conspiracy-obsessed Dipper and goofy, carefree Mabel realize they must rely on each other to survive their crazy, new world. Meanwhile, Grunkle Stan guards a secret of his own - one that just might hold the key to unlocking the deeper mystery that is Gravity Falls. beware cipher Bolded letters.
Bill's cipher - SBill's cipher - TBill's cipher - ABill's cipher - YSymbol cipher - SpaceBill's cipher - WBill's cipher - EBill's cipher - IBill's cipher - RBill's cipher - D STAY WEIRD Bill's Symbol Substitution Cipher
D vrxyhqlu lv vrphwklqj judqg/brx krog wkh vxpphu lq brxu kdqg A souvenir is something grand/you hold the summer in your hand Caesar
Bottom of box set case Bill's cipher - PBill's cipher - IBill's cipher - NBill's cipher - EBill's cipher - SSymbol cipher - SpaceBill's cipher - FBill's cipher - OBill's cipher - RBill's cipher - EBill's cipher - VBill's cipher - EBill's cipher - R PINES FOREVER Bill's Symbol Substitution Cipher
“One Crazy Summer” featurette Bill's cipher - LBill's cipher - EBill's cipher - FBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - TBill's cipher - EBill's cipher - EBill's cipher - TBill's cipher - H LEFT AT TEETH Bill's Symbol Substitution Cipher
Bill's cipher - LBill's cipher - EBill's cipher - FBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - CBill's cipher - HBill's cipher - EBill's cipher - CBill's cipher - HBill's cipher - EBill's cipher - RBill's cipher - S LEFT AT CHECKERS
Bill's cipher - RBill's cipher - IBill's cipher - GBill's cipher - HBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - ZBill's cipher - OBill's cipher - O RIGHT AT ZOO
Bill's cipher - LBill's cipher - EBill's cipher - FBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - CBill's cipher - RBill's cipher - YBill's cipher - PBill's cipher - TBill's cipher - OBill's cipher - GBill's cipher - RBill's cipher - ABill's cipher - MBill's cipher - S LEFT AT CRYPTOGRAMS
Bill's cipher - RBill's cipher - IBill's cipher - GBill's cipher - HBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - TBill's cipher - ABill's cipher - TBill's cipher - TBill's cipher - OBill's cipher - O RIGHT AT TATTOO
Bill's cipher - RBill's cipher - IBill's cipher - GBill's cipher - HBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - CBill's cipher - LBill's cipher - OBill's cipher - CBill's cipher - K RIGHT AT CLOCK
Bill's cipher - RBill's cipher - IBill's cipher - GBill's cipher - HBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - SBill's cipher - TBill's cipher - IBill's cipher - CBill's cipher - KBill's cipher - EBill's cipher - RBill's cipher - S RIGHT AT STICKERS
“The Hirsch Twins" featurette Bill's cipher - LBill's cipher - EBill's cipher - FBill's cipher - TSymbol cipher - SpaceBill's cipher - ABill's cipher - TSymbol cipher - SpaceBill's cipher - TBill's cipher - RBill's cipher - IBill's cipher - ABill's cipher - NBill's cipher - GBill's cipher - LBill's cipher - EBill's cipher - S LEFT AT TRIANGLES Bill's Symbol Substitution Cipher

References

  1. Dipper's and Mabel's Guide to Mystery and Nonstop Fun! by Disney Book Group. October 7, 2014. Published by Disney Press. Page(s) 127. ISBN: 978-1484710807.

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