Doku is the trivia sudoku: a 3×3 grid where each cell is filled not with a digit, but with an answer that matches both its row criterion and its column criterion. Several universes, one same joy of play.

▶ THE UNIVERSES
• Metrodoku: the Paris metro sudoku. Lines, terminus stations, neighborhoods, arrondissements… test your knowledge of the network.
• Moviedoku: the movie doku. Films, actors, directors, genres, decades… a true cinema trivia quiz.
• Footdoku: the soccer doku. Players, clubs, national teams, positions, World Cup, honours… from yesterday's legends to today's stars.
• Géodoku (early access): the geography doku. Countries, capitals, continents, flags… the whole world in a grid.

▶ HOW IT WORKS
Criteria on rows and columns, one answer to find at every intersection. A puzzle that is easy to understand, fiendish to master.

▶ A DAILY CHALLENGE
A new grid every day in every universe, the same for everyone. The rarer your answer, the more it scores: aim for the best originality score.

▶ TIME, STREAKS AND LEADERBOARD
Time yourself, play day after day to build your streak, and climb the community leaderboard.

▶ PLAY WITH FRIENDS
Add your friends, challenge them on the daily grid and compare your scores. Who really knows the metro? Who is unbeatable on movies or soccer?

▶ UNLIMITED FREE PLAY
Want to practice? Generate as many grids as you like, in every universe, even offline.

▶ DOKU+
Play ad-free and get early access to new universes.

▶ IN ENGLISH AND FRENCH
The app is fully translated: play in English or in French, your choice.

▶ WHO IS IT FOR?
For Paris metro lovers, film buffs, soccer fans, geography nerds, and everyone who enjoys puzzles, quizzes, sudoku and trivia.

No intrusive ads, no account required to play: open a grid and off you go.

Ready for today's challenge? Download Doku, the sudoku of the metro, movies, soccer and much more.