Content rating
Everyone
10+
Downloads
Content rating
Everyone
Learn more
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About this game

Zdoku is a free Sudoku app with three ways to play.

ZEN MODE
Solve at your own pace. No account required. Long-press a cell to pencil in candidate numbers, and toggle real-time mistake checking on or off.

LEADERBOARD MODE
Solve against the clock across four difficulty levels — Easy, Medium, Hard, Expert — and see your time next to other players.

MULTIPLAYER MODE
Create or join a room with up to 4 players and solve the same puzzle together. Each player's correct entries are marked with their color. Rematch when a round ends.

FEATURES
• Four difficulty levels
• Pencil-mark notes
• Real-time multiplayer, public and private rooms
• Global leaderboard
• Pause anytime in Zen mode
• Several color themes
• English, Spanish, French, and German
• Free, no ads, no in-app purchases
Free Sudoku with real-time multiplayer races, leaderboards, and no ads.
Updated on
Aug 12, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

First release.

Zdoku is Sudoku, free and unhurried — no ads, no purchases, no account needed.

• Zen: no scoring, no account needed; just play
• Leaderboard: race the clock to compete for global rank
• Multiplayer: race up to 4 players in real time

Four difficulties, pencil notes, themes and music.
Available in English, Spanish, French and German.

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