The flag puzzle.

Sudoku with flags instead of numbers. Eight world regions, 195 countries to choose from, and a custom builder so you can play with any corner of the world.

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App coming soon. No spam, ever.

Play now in your browser — free

Currently showing: Africa

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Eight world regions
Africa, South Asia, East Asia, Middle East, Americas, Europe West, Europe East, and Pacific. A different geography lesson every game.
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Build your own
Pick any 9 countries from 195 to create your own set. Test yourself on neighbours, rivals, or countries you've always wanted to visit.
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Learn as you play
Hover any flag to see the country name. Notes mode for working through the harder puzzles. Three difficulty levels.
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Satisfying to solve
A musical trill when you complete a 3×3 box. A full fanfare when you finish. One guaranteed solution every time.

Eight regions to explore

Switch between regions mid-game whenever you like.

Africa
South Asia
East Asia
Middle East
Americas
Europe West
Europe East
Pacific

Play with any country in the world

195 countries. Search, pick nine, name your set, and play. How well do you really know the world's flags?

Start playing →

Also from the same maker:

🎨 Chromoku — colours 🐾 Animoku — animals 🎓 Knowku — knowledge