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The Cartographer's Lie: now on Android

One hex on this chart is a lie. Find it. A new map daily.

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A daily deduction puzzle on a nautical chart. One hex on today's island is drawn as something it is not. Every survey note is true, and only one hex can satisfy them all. Find it and file your correction; you get three. New since our first launch: the Android app, spoiler-free share cards with a beat-my-time challenge, and Google sign-in. Casual and Standard charts are free in any browser, no account needed. Hard and Fiendish, streaks, ratings and duels live in the iOS and Android apps.

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PH · launched Oct 20, 2026 · 2 upvotes (top 23%)

Similar launches

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Could you build this?

Yes A daily hex-map deduction puzzle with a unique-solution generator and a mobile app is a game a solo builder can make with a constraint solver and standard game frameworks.

Competitors

Other products that read as similar to this one : 62 launches clear the similarity bar, closest 8 shown.

Attention rank: #7 of 63 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 277 days after the earliest competitor.

Other launches for this product