Sudoku Zen is a classic sudoku puzzle game built for calm, focused solving: a fresh Daily Sudoku, four difficulty levels, and 12,000+ solver-verified grids in the Zen Pass Puzzle Vault. New games, the Daily Sudoku and the Weekly Tournament are all generated right on your device, so classic play works with no signal and no account. And no ad ever interrupts a puzzle in progress: just you, the numbers and the logic.
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🧩 CLASSIC SUDOKU, DONE PROPERLY
• Easy, Medium, Hard and Expert levels — or let The Climb pick for you
• Every puzzle is solver-verified with exactly one solution
• Pencil notes with colour-coded marks, undo, error-check and auto-save
• Error, same-number and row/column/box highlighting, all switchable
• Three mistakes ends a game, the classic way — watch an ad to carry on, or continue ad-free with Zen Pass
Whether you are learning sudoku or chasing a harder logic challenge, you set the pace.
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✈️ PLAY SUDOKU OFFLINE, ANYWHERE
New games, the Daily Sudoku, the Daily Archive, The Climb and the Weekly Tournament are generated on your device — no sign-up needed. Play sudoku:
• Offline
• In airplane mode
• Without mobile data
• Without Wi-Fi
• Without an account
Only the leaderboard, cloud save and ads use the network.
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📅 A NEW DAILY SUDOKU EVERY DAY
• The same daily grid for every player worldwide
• Streak milestones at 7, 30 and 100 days
• Monthly challenge: clear every day of the month for a Perfect Month badge
• Daily Archive to replay puzzles you missed
• Comeback reminders with quiet hours
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🏆 WEEKLY SUDOKU TOURNAMENT
One shared Hard puzzle for everyone, every week. The puzzle itself plays offline; sign in with Play Games when you want your time on the global leaderboard.
No real-time multiplayer — just one sudoku puzzle, one week, one worldwide board.
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⛰️ THE CLIMB — ADAPTIVE SUDOKU
An endless, adaptive ladder generated on your device. It opens on Easy, steps up after three wins in a row, and eases back when your lives run out, keeping it just past comfortable.
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🗄️ 12,000+ PUZZLES IN THE PUZZLE VAULT
Themed sudoku packs, each with its own mood:
• Speedster Drills: 3,000 Easy
• Holidays: 3,000 Medium
• World Tour: 3,000 Hard
• Summit Ascent: 3,000 Expert, the steepest climb in the Vault
• Daily Archive: every past daily, one more added each day
Curated packs unlock in order, so solving one opens the next. The Vault is part of Zen Pass.
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📱 A SUDOKU APP BUILT FOR TABLETS
Not a stretched-out phone screen. On a tablet in landscape the board and number pad sit side by side. Plus full-screen play, a widget with your game in progress and your streak, and four long-press app-icon shortcuts.
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📊 BRAIN TRAINING YOU CAN MEASURE
Best times per mode, win rate, games solved, total time played, current and longest streak. Finish a grid for an instant new-best-time or flawless-run callout, plus a result card to share.
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🎨 MAKE IT YOURS
Light, Dark and System are free; nine more colour themes come with Zen Pass, 11 in total. Clean Material 3 design, plus adjustable text size, sound, haptics and highlights. Fully translated into English, Spanish, Portuguese (Brazil), German, French and Hindi.
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🌿 ZEN PASS
✓ Ad-free play
✓ Opens the Puzzle Vault
✓ Unlimited hints and error checks
✓ Continue on extra lives without watching an ad
✓ Nine premium themes
✓ Advanced stats: hourly play, weekly trends, a solving calendar
Monthly, yearly with a free trial, or a one-time lifetime purchase. Sudoku Zen is free and ad-supported; the pass removes the ads.
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Ten quiet minutes with a classic number puzzle is some of the best brain training there is: no luck, no timer pressure, just a pure logic game. Start your first offline game in seconds, no account needed.
Classic Sudoku Zen number puzzle, logic drills, brain training, weekly challenge