Cipher Post

Cipher Post is a classic cryptogram puzzle game set inside a vintage post office, where every letter arrives encrypted and waiting to be decoded. Each puzzle uses a real substitution cipher: every alphabet letter has been swapped for another. Tap a cipher letter, choose its true letter on the keyboard, and reveal the message step by step as words begin to make sense. Use helpful codebreaker tools such as frequency bars, one-letter word clues, and repeated word patterns to solve difficult dispatches without guessing. Play at your own pace in Relaxed mode, or try Challenge mode with a mistake counter for a sharper test. Solve 112 handcrafted cryptograms across 8 themed packs, including proverbs, expedition telegrams, love letters, detective notes, sea post, and more. A fresh Daily Cipher offers streak tracking, while stars, achievements, statistics, and unlockable packs give you long-term goals. The illustrated Decoder’s Manual teaches classic solving strategies, and the whole game works offline with no account required. Built with aged parchment, brass details, wax seals, and a quiet vintage atmosphere, Cipher Post turns every encrypted letter into a small logic mystery.