Observed arrival · 2026-10-24
Worlddoku turns country boards into a stamp-collecting logic game
A free browser puzzle asks players to place one stamp in each colored region of a country board without sharing rows or columns—or touching, even diagonally.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Players who enjoy deduction puzzles with a geography theme
- Worth noticing
- The site says hints explain the next logical step, and that every level has a step-by-step guide.
Field notes
The rules combine one stamp per colored region with one per row and column, plus a no-touching constraint that also covers diagonals. The listed levels are divided evenly among three board sizes, and the site links to both general solving tips and step-by-step level guides. The homepage says collected stamps fill a passport and that progress stays on the player's device.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue