Cipher Desk: Cryptogram

Cipher Desk is a classic cryptogram set on a 1940s spy's desk. Under a green banker's lamp, beside an old typewriter and a red wax seal, a famous saying waits on a cream sheet of paper, every letter swapped for a number. Crack the code and the whole saying appears, and then the typewriter reveals its author.

HOW TO PLAY
• Every letter of the saying has been replaced by a number; the same number always hides the same letter
• Tap a box and every box with the same number lights up
• Type a letter on the typewriter keyboard and it fills all of those boxes
• Some letters are revealed at the start; short words, double letters and apostrophes are your best clues

CASE FILES
Solve case after case, ten cases to a file, and rise from Rookie to Agent, Spymaster and Legend. Files start with short, simple sayings and grow longer and harder: on Easy almost half of the letters are given, on Expert fewer than a fifth.

THE DAILY CIPHER
One saying for everyone each day: easiest on Monday, hardest on Saturday. Solve it to grow your streak, and solve it again for a better score.

STUCK? REVEAL A LETTER
Every case comes with three free letter reveals. Prefer the classic pencil-and-paper way? Turn on Pencil to write freely and use Check when you are ready. Undo is always free.

NO GAME OVER
There are no lives and no energy. With instant check, a wrong letter simply turns red and lowers your score a little; a right letter locks in. Mistakes never end the game.

REAL SAYINGS, FAIR BY DESIGN
Thousands of well-known proverbs and quotes by great writers, thinkers and leaders, all in the public domain: every author died more than 70 years ago, and every quote was checked against the author's Wikiquote page. No modern quotes, no song lyrics. Each case's code comes from a seed, so everyone sees the same cipher, and the saying's SHA-256 seal is printed on the paper before your first letter: the answer never changes to suit you. See it all in "How is it fair?".

A REASON TO COME BACK
• Three daily missions, easy, medium and hard, plus a bonus for finishing all three
• Three stars for a perfect solve, best times and detailed statistics
• Levels and XP
• Desks and wax seals that unlock as you play: Radio Room, Night Train, Bosphorus Terrace, Alpine Chalet, Secret Archive; Navy Blue, Emerald, Midnight Black, Gold, Velvet Purple, Telegram, Silver
• Halloween, October 23 – November 3: solve a case and keep the Halloween Night desk and the Pumpkin seal forever
• At most one reminder a day, and only if you want it

COMFORTABLE FOR EVERY PLAYER
Big, clear letter boxes (even bigger if you like), a crisp typewriter font, a calm jazz soundtrack and the soft clack of typewriter keys. Plays offline, no Wi-Fi needed. Sayings in English and Turkish; menus in ten languages.

NO FORCED ADS
Ads play only when you choose one: three more letter reveals, double XP after a solve, saving a broken streak, swapping a daily mission, or trying a desk or seal for 24 hours. No banners, no interstitials, no in-app purchases. Free to play.