Cipher methods

Every method used in CipherChronicle is documented here: origin, principle, worked example, known weaknesses and links to the grids that use it.

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Difficulty

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164 method(s) shown

seven-segments
Beginner
7-Segment Display
The alphabet on your clock, your calculator, your microwave.
SymbolsRead the page
a1z26
Beginner
A1Z26 cipher (alphabet rank)
A = 1, B = 2, …, Z = 26. The most intuitive letter-to-number cipher.
CodeRead the page
abyss
Beginner
Abyss (Genshin Impact)
The Abyss Order's script in Genshin Impact, carved on Khaenri'ah's ruins.
SymbolsRead the page
acere
Beginner
Acéré (sharpened blades)
An alphabet of sharp shapes, sibling to Daggers.
SymbolsRead the page
adfgvx
Advanced
ADFGVX cipher
Six-letter extension of ADFGX, covering digits 0-9.
GridRead the page
adfgx
Advanced
ADFGX cipher
First used on the German Western Front, 5 March 1918. Broken by Painvin.
GridRead the page
affine
Intermediate
Affine cipher
Each letter runs through ax + b mod 26. The algebraic cousin of Caesar.
SubstitutionRead the page
al-bhed
Beginner
Al Bhed (Final Fantasy X)
The Al Bhed language in *Final Fantasy X*.
SymbolsRead the page
alberti
Intermediate
Alberti cipher
The first mechanical cipher. Rotating two-ring disk (1467).
PolyalphabeticRead the page
futurama
Beginner
Alien Alphabet (Futurama)
Futurama's hidden alien alphabet, scattered across the signs of New New York.
SymbolsRead the page
alpha-angle
Beginner
Alpha Angle (cattle branding)
The hot-iron numeration of American ranches.
SymbolsRead the page
magi
Beginner
Alphabet of the Magi
Paracelsus' alphabet: a Hebrew-angelic variant from Agrippa's family, with different phonetic folds.
SymbolsRead the page
alternian
Beginner
Alternian (Homestuck)
The script of the Trolls of planet Alternia in *Homestuck*.
SymbolsRead the page
asl
Beginner
American Sign Language (ASL)
The manual alphabet of American Sign Language.
SymbolsRead the page
amphibia
Beginner
Amphibia (Disney)
The alphabet of the frogs, toads and newts of the Amphibia kingdom.
SymbolsRead the page
amsco
Advanced
AMSCO cipher
Alternating 1-2 transposition. Harder to reconstruct.
TranspositionRead the page
stargate
Beginner
Ancients (Stargate)
The Lantean script on Stargates and the City of Atlantis.
SymbolsRead the page
atbash
Beginner
Atbash
A full alphabet flip. A ↔ Z, B ↔ Y.
SubstitutionRead the page
atlantean
Beginner
Atlantean (Disney's Atlantis)
Marc Okrand's Atlantean alphabet: 26 letters + 10 digits in 'dots and bars' notation.
SymbolsRead the page
aurebesh
Beginner
Aurebesh (Star Wars)
Star Wars's official alphabet. 1:1 substitution on the Latin alphabet.
Pop cultureRead the page
autokey
Intermediate
Autokey cipher
Vigenère without a period: the key self-extends using the plaintext.
PolyalphabeticRead the page
ave-maria
Intermediate
Ave Maria cipher (Trithemius)
One Latin word per letter. The ciphertext reads like a prayer.
CodeRead the page
babyloniens
Intermediate
Babylonian numerals
Base 60, two signs (wedge + hook). The first positional numeral system.
NumeralsRead the page
bacon
Beginner
Bacon cipher
Every letter → sequence of 5 A/B symbols. A precursor to binary.
CodeRead the page
ballet
Beginner
Ballet Alphabet
The dancer-silhouette alphabet: each letter is a ballet pose.
SymbolsRead the page
bazeries
Advanced
Bazeries cipher
Reversed plaintext + substitution via a spelled-number keyed square.
PolyalphabeticRead the page
beaufort
Intermediate
Beaufort cipher
An involutive Vigenère: encryption = decryption.
PolyalphabeticRead the page
beaufort-variant
Intermediate
Beaufort variant (German)
Subtractive Beaufort. Not involutive — easy to mistake for the original.
PolyalphabeticRead the page
bellaso
Intermediate
Bellaso cipher
Direct ancestor of Vigenère. Polyalphabetic text-key (1553).
PolyalphabeticRead the page
betamaze
Beginner
Betamaze (maze alphabet)
An alphabet whose letters connect into mini-mazes.
SymbolsRead the page
bibi
Beginner
Bibi-binary (Boby Lapointe, 1968)
Boby Lapointe's hexadecimal system as graphical syllables.
SymbolsRead the page
bifid
Advanced
Bifid cipher (Delastelle)
Polybius + fractionation. Rows and columns split then recombined.
GridRead the page
bill
Beginner
Bill Cipher Alphabet (Gravity Falls)
The trickster-demon's alphabet from Gravity Falls: 26 glyphs, one per letter, purely visual rendering.
SymbolsRead the page
birds
Beginner
Birds on a Wire
The birds-on-a-wire alphabet: an innocent frieze hiding a message.
SymbolsRead the page
book-cipher
Advanced
Book cipher
Coordinates in a shared book: page, line, word. Arnold and Beale.
HomophonicRead the page
braille
Beginner
Braille
6 dots in a 2×3 grid. Tactile alphabet, also readable as a cipher.
SignalsRead the page
caesar
Beginner
Caesar cipher
A fixed alphabet shift. The classic — easy to grasp, easy to break.
SubstitutionRead the page
caesar-square
Beginner
Caesar square
Text written in rows in a square, read back in columns. The most minimal transposition.
TranspositionRead the page
celestial
Beginner
Celestial alphabet
Agrippa's angelic alphabet: Hebrew-derived glyphs with circle-tipped strokes.
SymbolsRead the page
chaocipher
Advanced
Chaocipher
Two alphabet discs permuted after every letter. Stayed secret for 90 years.
PolyalphabeticRead the page
chappe
Intermediate
Chappe optical telegraph
Articulated-arm tower, 196 positions. Telegraph before electricity.
SignalsRead the page
chinese-code
Beginner
Chinese Code (pseudo-sinograms)
A decorative alphabet that imitates the look of sinograms.
SymbolsRead the page
circular-glyphs
Beginner
Circular Glyphs
An alphabet where each letter fits inside an engraved circle.
SymbolsRead the page
cisterciens
Beginner
Cistercian numerals
One glyph for 1 to 9999, built around a staff. Alphabet encoded by rank.
NumeralsRead the page
columnar
Intermediate
Columnar transposition
Text in rows, read in columns ordered by a keyword.
TranspositionRead the page
copiale
Beginner
Copiale Cipher (Germany, 1730-1760)
The secret 18th-c. oculist manuscript, decrypted in 2011 after 250 years.
SymbolsRead the page
covenant
Beginner
Covenant (Halo)
The tangram-triangle script of the Halo antagonists.
SymbolsRead the page
dni-numerals
Beginner
D'ni Numerals (Myst)
The D'ni civilisation's base-25 numeration in *Myst*.
SymbolsRead the page
dada-urka
Beginner
Dada Urka (Russian beggars' marks)
The discreet marks of 19th-c. Russian beggars, repurposed for cryptography.
SymbolsRead the page
daedric
Beginner
Daedric Alphabet (Skyrim)
The alphabet on Skyrim's daedric weapons and armour: 26 runic glyphs, direct Latin mapping.
SymbolsRead the page
daggers
Beginner
Daggers alphabet
Dagger-shaped alphabet: one glyph per letter, no phonetic folds.
SymbolsRead the page
dancing-men
Intermediate
Dancing Men cipher
Stick figures = mono substitution. Sherlock Holmes, 1903.
Pop cultureRead the page
dinotopia
Beginner
Dinotopia (J. Gurney, 1992)
The script of the utopian island where dinosaurs and humans coexist.
SymbolsRead the page
dorabella
Advanced
Dorabella cipher (Elgar)
87 arcs of a circle from Elgar to Dora. Unsolved since 1897.
Pop cultureRead the page
dotsies
Beginner
Dotsies (Craig Muth, 2012)
Binary-dot column writing, designed for fast reading.
SymbolsRead the page
double-transposition
Advanced
Double transposition
Two columnar transpositions in a row. Held unbreakable for short messages.
TranspositionRead the page
dovahzul
Beginner
Dovahzul (Skyrim Dragon Language)
Skyrim's dragon language: 26 claw-marked runes, the foundation of the Shouts (Fus Ro Dah).
SymbolsRead the page
hieroglyphs
Intermediate
Egyptian hieroglyphs
Egyptian pictograms + phonograms. Champollion as the reading key.
SymbolsRead the page
elder-futhark
Beginner
Elder Futhark
The runic alphabet of the pre-Viking age — 24 Germanic runes.
SymbolsRead the page
elian
Beginner
Elian Script (conceptual art)
C.C. Elian's geometric alphabet: straight strokes and squares on a grid.
SymbolsRead the page
enigma
Advanced
Enigma machine
The famous WWII German machine. Breaking Enigma founded modern computing.
PolyalphabeticRead the page
enochian
Beginner
Enochian alphabet
The angelic alphabet revealed to John Dee — 21 letters with their names (Un, Pa, Graph…).
SymbolsRead the page
fez
Beginner
Fez (Polytron, 2012)
Fez's puzzle-alphabet: 24 glyphs, two folds (Q→K, V→U), decoded via ARG.
SymbolsRead the page
semaphore
Beginner
Flag semaphore
Two arms × 8 directions = 1 letter. Line-of-sight maritime signalling.
SignalsRead the page
four-square
Advanced
Four-square cipher
Digram cipher on four 5×5 grids. Double-keyed.
PolygraphicRead the page
lsf
Beginner
French Sign Language (LSF)
The manual alphabet of the French-speaking deaf community.
SymbolsRead the page
friderici-windows
Beginner
Friderici (window-shutter alphabet)
A 17th-century alphabet where letters are open shutters.
SymbolsRead the page
futhark
Beginner
Futhark runes
Germanic runic alphabet. Scandinavian stones, amulets, inscriptions.
SymbolsRead the page
rot
Beginner
Generic ROT
The mother family of shift ciphers: ROT-N for any integer N. ROT-13 and ROT-47 are the iconic ones.
CodeRead the page
gerudo
Beginner
Gerudo (Zelda BoTW)
The script of Hyrule's desert warriors, completes our BoTW trio.
SymbolsRead the page
goblin-tolkien
Beginner
Goblin (Tolkien)
The script of Middle-earth's goblins and orcs.
SymbolsRead the page
goron
Beginner
Goron (Zelda)
The alphabet of Zelda's rocky people.
SymbolsRead the page
grandpre
Intermediate
Grandpré cipher
10×10 word grid. Per-letter coordinates — naturally homophonic.
HomophonicRead the page
falls-alchemy
Beginner
Gravity Falls — Alchemy Cipher
The alchemical alphabet seen in the margins of Journal 3 in Gravity Falls.
SymbolsRead the page
falls-author
Beginner
Gravity Falls — Author's alphabet
Ford Pines's alphabet (the Author of Journal 3) in Gravity Falls.
SymbolsRead the page
falls-bros
Beginner
Gravity Falls — Bros' Code
The Pines twins' secret alphabet in Gravity Falls.
SymbolsRead the page
falls-color
Beginner
Gravity Falls — Color Code
An alphabet where each letter is a colour.
SymbolsRead the page
falls-journal
Beginner
Gravity Falls — Journal 3
The alphabet of Ford Pines's investigation notebook in Gravity Falls.
SymbolsRead the page
falls-rune
Beginner
Gravity Falls — Rune Cipher
The runes seen in Gravity Falls next to Journal 3.
SymbolsRead the page
falls-theraprism
Beginner
Gravity Falls — Theraprism
The alphabet of the prison where Bill Cipher is locked up.
SymbolsRead the page
gronsfeld
Intermediate
Gronsfeld cipher
Vigenère with a numeric key (0-9). Easier to apply by hand.
PolyalphabeticRead the page
hexahue
Beginner
Hexahue
2×3 mosaic of 6 colours per letter. Mono substitution by colour code.
SymbolsRead the page
hill
Advanced
Hill cipher
Block cipher by matrix multiplication (1929). Cryptography meets linear algebra.
PolygraphicRead the page
homophonic
Advanced
Homophonic cipher
Multiple symbols per letter. Aims to flatten frequencies.
HomophonicRead the page
hylian
Beginner
Hylian (Breath of the Wild)
Hyrule's BoTW-era alphabet: 26 runic glyphs, one per Latin letter, no folds.
SymbolsRead the page
hymnos
Beginner
Hymnos (Ar tonelico)
The sung magical language of *Ar tonelico*.
SymbolsRead the page
illageralt
Beginner
Illageralt (Minecraft Dungeons)
The runic script of Minecraft Dungeons' Pillagers, Vindicators and Evokers.
SymbolsRead the page
iokharic
Beginner
Iokharic / Draconic (D&D)
The script of D&D dragons, readable on draconic armour and grimoires.
SymbolsRead the page
zapf-dingbats
Beginner
ITC Zapf Dingbats (Hermann Zapf, 1978)
The canonical dingbat font of the typesetting industry.
SymbolsRead the page
jefferson
Advanced
Jefferson cylinder (M-94)
36 rotating discs on an axle. Invented by Jefferson, picked up by the US Army in 1922.
PolyalphabeticRead the page
kaktovik
Beginner
Kaktovik Numerals (Iñupiat)
The Inuit base-20 numeration created by Alaskan high schoolers.
SymbolsRead the page
kirby
Beginner
Kirby (Forgotten Land)
The alphabet of the first full-3D Kirby (2022).
SymbolsRead the page
klingon
Beginner
Klingon pIqaD (Star Trek)
Star Trek's official Klingon alphabet. 1:1 substitution, warrior aesthetic.
Pop cultureRead the page
kryptonian
Beginner
Kryptonian (Superman)
Krypton's alphabet with its iconic S: 26 letters + 10 digits, one-to-one substitution.
SymbolsRead the page
kryptos
Advanced
Kryptos (CIA sculpture)
Sculpture-puzzle installed at the CIA. K4 has held since 1990.
Pop cultureRead the page
lingua
Beginner
Lingua Ignota (Hildegard of Bingen, 12th c.)
The alphabet of the 12th-c. mystic saint, codified in her great codex.
SymbolsRead the page
lunar
Beginner
Lunar (Leandro Katz, 1978)
Leandro Katz's moon-phase alphabet: Argentine conceptual art (1978).
SymbolsRead the page
malachim
Beginner
Malachim alphabet
Agrippa's angular angelic alphabet — the "messengers' script" derived from Hebrew.
SymbolsRead the page
maritime-signals
Beginner
Maritime Signals (ICS)
The official maritime signaller's code — 26 flags + 10 pennants.
SymbolsRead the page
mary-stuart
Advanced
Mary Queen of Scots cipher
Homophonic + nomenclator. The cipher that cost Mary Stuart her head.
HomophonicRead the page
matoran
Beginner
Matoran (LEGO Bionicle)
The circular Matoran alphabet, secret code of early-2000s Bionicle fans.
SymbolsRead the page
mayas
Beginner
Mayan numerals
Base 20 with dot, bar and shell. One of the earliest positional zeros.
NumeralsRead the page
mirror-digits
Beginner
Mirror Digits
Digits and letters seen in a mirror.
SymbolsRead the page
substitution
Intermediate
Monoalphabetic substitution
A free permutation of the alphabet. 26! options — but frequency gives it up.
SubstitutionRead the page
moon
Beginner
Moon alphabet (W. Moon, 1845)
The braille alternative for adults who became blind later in life.
SymbolsRead the page
morbit
Intermediate
Morbit cipher
Morse grouped in symbol pairs, each pair becomes a digit 1-9.
PolygraphicRead the page
morse
Beginner
Morse code
Dots and dashes. Born of the telegraph, still alive on radio.
CodeRead the page
mourier
Beginner
Mourier alphabet
A 19th-century stylised alphabet of geometric shapes.
SymbolsRead the page
multiplication-vigenere
Advanced
Multiplicative Vigenère
Vigenère where the key multiplies instead of adding. Bijective only for odd keys ≠ 13.
PolyalphabeticRead the page
music-notes
Beginner
Music notes cipher
Each letter → note + octave. Ciphertext that reads as a score.
CodeRead the page
nato
Beginner
NATO phonetic alphabet
Alpha, Bravo, Charlie, Delta, Echo, Foxtrot… One word per letter, for unambiguous spelling.
CodeRead the page
navajo
Intermediate
Navajo code talkers
Unwritten Navajo language. The only major WWII code never broken by the enemy.
CodeRead the page
nihilist
Intermediate
Nihilist cipher
Polybius + additive numeric key. Born among Russian revolutionaries.
GridRead the page
ninjargon
Beginner
Ninjargon (ninja alphabet)
The puzzle-book ninja alphabet: stars, blades and crossed lines.
SymbolsRead the page
nyctography
Beginner
Nyctography (Lewis Carroll)
Lewis Carroll's nightwriting: dot-and-stroke alphabet on a 2×2 grid, derived from the Latin letters.
SymbolsRead the page
ogham
Beginner
Ogham (Celtic alphabet)
Notches along a stone's edge. Alphabet of the Irish druids.
SymbolsRead the page
outer-rim
Beginner
Outer Rim Basic (Star Wars)
The alphabet of Star Wars's galactic fringe.
SymbolsRead the page
phillips
Advanced
Phillips cipher
Eight cyclic 5×5 grids. Each 5-letter block uses the next grid.
PolyalphabeticRead the page
pigpen
Beginner
Pigpen cipher (Freemason)
Geometric glyphs from a 3×3 grid + X. Classic masonic code.
SymbolsRead the page
playfair
Advanced
Playfair cipher
Digram cipher on a 5×5 grid. British Army (1854).
PolygraphicRead the page
pollux
Intermediate
Pollux cipher
Morse + homophony: ., – and / are replaced by multiple digits each.
PolygraphicRead the page
polybius
Beginner
Polybius square
Every letter becomes a pair of coordinates in a 5×5 grid.
GridRead the page
porta
Advanced
Porta cipher
Thirteen involutive tables. Each key pair picks a distinct mirror.
PolyalphabeticRead the page
ragbaby
Advanced
Ragbaby cipher
Each letter is shifted by its position WITHIN ITS WORD, not in the message.
PolyalphabeticRead the page
rail-fence
Beginner
Rail Fence (zig-zag)
Zigzag transposition across rails. Simple, visual, pedagogical.
TranspositionRead the page
rata-alada
Beginner
Rata Alada (The Batman 2022)
The Riddler's alphabet in the film *The Batman* (2022).
SymbolsRead the page
rosicrucian
Beginner
Rosicrucian cipher
Glyphs from a four-arm cross grid. 17th-century esoterica.
SymbolsRead the page
rot-13
Beginner
ROT-13
A special case of Caesar (shift 13, involutive).
SubstitutionRead the page
rot-47
Beginner
ROT-47
ROT-13 extended to the 94 printable ASCII characters. Fixed shift of 47.
SubstitutionRead the page
rotating-grid
Intermediate
Rotating grille
A perforated grille rotated 4 times. Visual and tactile.
TranspositionRead the page
scytale
Beginner
Scytale (Spartan rod)
The Spartan rod. The oldest known military cipher device.
TranspositionRead the page
semaphore-clock
Beginner
Semaphore Clock
Naval semaphore re-dressed as a clock face.
SymbolsRead the page
semaphore-trousers
Beginner
Semaphore Trousers
Semaphore retransposed onto the legs of a pair of trousers.
SymbolsRead the page
sheikah
Beginner
Sheikah (Breath of the Wild)
The script on BoTW shrines and guardians: squares and dots, pairs with Hylian.
SymbolsRead the page
simlish
Beginner
Simlish (The Sims)
The script of the *Sims* franchise — since 2000.
SymbolsRead the page
slidefair
Advanced
Slidefair cipher
Vigenère that ciphers digrams — each pair is shifted by a key letter.
PolyalphabeticRead the page
solitaire
Advanced
Solitaire (Pontifex)
Stream cipher with a 54-card deck. Portable, no computer required.
PolyalphabeticRead the page
spiral
Intermediate
Spiral cipher
Cleartext drawn as a spiral inside a grid, then read back row by row.
TranspositionRead the page
standard-galactic
Beginner
Standard Galactic Alphabet
The alphabet on Minecraft's enchanting table. 26 angular glyphs + the period.
SymbolsRead the page
stray
Beginner
Stray (Walled City 99)
The script of Stray's post-apocalyptic world, readable on the Companions' signs.
SymbolsRead the page
symbol-font
Beginner
Symbol (Greek font)
The font that turns A into α and B into β.
SymbolsRead the page
tap-code
Beginner
Tap code
Polybius transmitted by taps. Used by POWs in Vietnam.
GridRead the page
templar
Beginner
Templar cipher
Geometric glyphs from the Templar cross. Seals bills of exchange.
SymbolsRead the page
tenctonese
Beginner
Tenctonese (Alien Nation)
The alien language from *Alien Nation*.
SymbolsRead the page
teyvat
Beginner
Teyvat (Genshin Impact)
Teyvat's sacred script on the Statues of the Seven and Genshin Impact's temples.
SymbolsRead the page
theban
Beginner
Theban alphabet
Curved esoteric alphabet, medieval grimoires and Wicca.
SymbolsRead the page
three-square
Intermediate
Three-square cipher
Three 5×5 grids, two of them keyed. Digram encryption by rectangle rule.
PolygraphicRead the page
tic-tac-toe
Beginner
Tic-Tac-Toe cipher
Pig Pen's playful cousin — 3×3 grid + crosses/circles. Each letter is a graphical fragment.
SymbolsRead the page
tifinagh
Beginner
Tifinagh ⵜⵉⴼⵉⵏⴰⵖ
Ancient Berber / Amazigh alphabet still alive. Official in Morocco since 2003.
SymbolsRead the page
trifid
Advanced
Trifid cipher (Delastelle)
3D bifid. 3×3×3 cube, three coordinates per letter.
GridRead the page
trithemius
Intermediate
Trithemius cipher
The first polyalphabetic cipher. Progressive shift, no key.
PolyalphabeticRead the page
two-square
Intermediate
Two-square cipher
Digrams on two grids. Simplified Four Square.
PolygraphicRead the page
unown
Beginner
Unown Alphabet (Pokémon)
The Pokémon alphabet: 26 creature-letters with a central eye and arcs, popularised by Gold/Silver/Crystal.
SymbolsRead the page
vernam
Advanced
Vernam cipher (One-Time Pad)
The only provably unbreakable cipher. Random key, used once.
PolyalphabeticRead the page
vic
Advanced
VIC cipher
Straddling checkerboard + double transposition + numeric key. KGB in the field.
PolygraphicRead the page
vigenere
Intermediate
Vigenère cipher
A Caesar whose key changes at every letter. Long thought unbreakable.
PolyalphabeticRead the page
vulcan
Beginner
Vulcan (Star Trek)
Star Trek's Vulcan script: 26 geometric glyphs, one per Latin letter.
SymbolsRead the page
wakanda
Beginner
Wakandan Alphabet (Black Panther)
The script of the fictional kingdom of Wakanda, inspired by African writing systems: 26 letters + 10 digits in 1↔1 substitution.
SymbolsRead the page
webdings
Beginner
Webdings (Microsoft, 1997)
Microsoft's web pictograms by the Comic Sans designer.
SymbolsRead the page
wingdings
Beginner
Wingdings (Microsoft, 1990)
The iconic Windows pictogram font since 1990.
SymbolsRead the page
wingdings-2
Beginner
Wingdings 2 (Microsoft, 1995)
Second volume in the Wingdings family (Microsoft, 1995).
SymbolsRead the page
wingdings-3
Beginner
Wingdings 3 (Microsoft, 1995)
The Microsoft font entirely dedicated to arrows.
SymbolsRead the page
xor
Intermediate
XOR cipher
Exclusive-OR between plaintext and key. Foundation of modern symmetric crypto.
ModernRead the page
zodiac
Advanced
Zodiac Killer ciphers
Mixed-symbol homophonic from the Zodiac Killer. Z408 in a week, Z340 in 51 years.
Pop cultureRead the page

Cipher methods

7-Segment Display

A1Z26 cipher (alphabet rank)

Abyss (Genshin Impact)

Acéré (sharpened blades)

ADFGVX cipher

ADFGX cipher

Affine cipher

Al Bhed (Final Fantasy X)

Alberti cipher

Alien Alphabet (Futurama)

Alpha Angle (cattle branding)

Alphabet of the Magi

Alternian (Homestuck)

American Sign Language (ASL)

Amphibia (Disney)

AMSCO cipher

Ancients (Stargate)

Atbash

Atlantean (Disney's Atlantis)

Aurebesh (Star Wars)

Autokey cipher

Ave Maria cipher (Trithemius)

Babylonian numerals

Bacon cipher

Ballet Alphabet

Bazeries cipher

Beaufort cipher

Beaufort variant (German)

Bellaso cipher

Betamaze (maze alphabet)

Bibi-binary (Boby Lapointe, 1968)

Bifid cipher (Delastelle)

Bill Cipher Alphabet (Gravity Falls)

Birds on a Wire

Book cipher

Braille

Caesar cipher

Caesar square

Celestial alphabet

Chaocipher

Chappe optical telegraph

Chinese Code (pseudo-sinograms)

Circular Glyphs

Cistercian numerals

Columnar transposition

Copiale Cipher (Germany, 1730-1760)

Covenant (Halo)

D'ni Numerals (Myst)

Dada Urka (Russian beggars' marks)

Daedric Alphabet (Skyrim)

Daggers alphabet

Dancing Men cipher

Dinotopia (J. Gurney, 1992)

Dorabella cipher (Elgar)

Dotsies (Craig Muth, 2012)

Double transposition

Dovahzul (Skyrim Dragon Language)

Egyptian hieroglyphs

Elder Futhark

Elian Script (conceptual art)

Enigma machine

Enochian alphabet

Fez (Polytron, 2012)

Flag semaphore

Four-square cipher

French Sign Language (LSF)

Friderici (window-shutter alphabet)

Futhark runes

Generic ROT

Gerudo (Zelda BoTW)

Goblin (Tolkien)

Goron (Zelda)

Grandpré cipher

Gravity Falls — Alchemy Cipher

Gravity Falls — Author's alphabet

Gravity Falls — Bros' Code

Gravity Falls — Color Code

Gravity Falls — Journal 3

Gravity Falls — Rune Cipher