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Life & fun · August 25, 2026

CipherBreaker

A deduction game with a verifiably random daily puzzle

What it does

A pure-deduction code-breaking game. The global Daily Challenge is provably fair: each day's code comes from drand, a public randomness beacon nobody controls — not even the dev. 7 modes, no-account challenge links, playable on web too.

A four-digit code, feedback after every guess, and no luck anywhere. Play a round here, then get CipherBreaker free on iPhone.

Every code can be cracked by logic alone: read the feedback, eliminate the impossible, close in. The display runs the app's own evaluator, so the round below is the real thing. 10,000 codes are possible. Deduction is how you cut them down. Two of the classic modes report the same truth in different languages. One paints it. One counts it. Green sits in the right slot. Gold is the right digit in the wrong slot. Grey is not in the code. No colours. Two numbers: how many digits are exactly right, and how many are right but misplaced. Digits never repeat, so 5,040 codes are in play. Two digits nailed. One digit present, wrong slot. One not in the code at all. Each mode changes what the code…from cipherbreaker.app

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