The following is a list of cryptograms from Gravity Falls. There is a cryptogram during the credits of each episode. They use Caesar ciphers, Atbash ciphers, A1Z26 cipher and the keyed Vigenère ciphers. Episodes 1-6 use the Caesar cipher, episodes 7-13 use Atbash ciphers, episodes 14-19 use the A1Z26 cipher, episode 20 uses a combined cipher (a combination of any given cipher), and episodes 21-present use a Vigenère cipher. Note: Hover mouse over &#x27;i&#x27; icon for more information: