Sudoku, but make it yours.

Your favourite puzzle, reimagined with beautiful themes, adorable companions and little moments of joy.

Coming soon toApp Store
Coming soon toGoogle Play

Coming to iPhone and Android. Free to play, with no ads and no lives.

Play a puzzle now

Try a theme

SUDORI on a phone: a Classic puzzle in the Pink Dreams theme, with Mochi keeping you company.

Make every puzzle feel like you.

Soft pinks, dreamy nights, cozy greens. Your Sudoku, your mood.

Prefer your own colours? With SUDORI Plus you can build a palette, and SUDORI keeps every digit readable.

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The SUDORI home screen in the Pink Dreams theme.

Tap Mochi to say hello.

Meet your little companions.

Mochi, Miso and Lumi keep you company while you solve. They cheer you on quietly and never cover the board.

MochiGentle bunny

Mochi is a shy, affectionate bunny who loves quiet evenings and soft cushions.

Try an accessory

Choose your first companion when you start. Accessories, rooms and decorations are earned by playing, and a few extras come with SUDORI Plus.

More than just numbers.

Every part of SUDORI is built around one idea: a calm, fair puzzle that respects your time.

The Sudoku Coach in SUDORI explaining a Full House on the board.

A coach that shows its work

Stuck? The Sudoku Coach looks at your board and finds the next real deduction. It starts with a gentle nudge and only explains more if you ask.

Twenty human techniques, from Full House to XY-Chains.
Checks for clashes and wrong entries are clearly labelled as checks, not deductions.
Every puzzle has exactly one solution and can be solved by logic alone.

The SUDORI home screen in the Pink Dreams theme, with ways to play.

Play the way today feels

Ask for something relaxing, a challenge, five quiet minutes or a lesson, and SUDORI suggests the right game.

Cozy mode: no timer and no mistake counting.
Focus mode: a minimal board with every advanced tool at hand.
Daily Ritual: one puzzle a day, the same for everyone.
Six difficulties, from Beginner to Master, graded by the techniques each puzzle needs.

The SUDORI Academy with the first lesson, How Sudoku works, and the skill map.

Learn techniques for real

The Academy teaches one technique at a time and lets you practise it straight away on real puzzles.

Fifteen interactive lessons on a skill map.
Practice positions come from real boards, not drills.
Your technique mastery grows as you play.

A Killer Sudoku in SUDORI with dashed cages and their sums.

Same logic, new twists

When classic Sudoku feels familiar, each variant adds one extra rule.

Diagonal: both main diagonals also hold 1 to 9.
Killer: dashed cages show the sum of their digits.
Thermo: digits rise along each thermometer.

No ads. No lives. No subscriptions.

Every puzzle, mode, lesson and hint is free, for good. Optional purchases are cosmetic and never make the game easier. SUDORI works offline, and your games stay on your device.

Made for your hands

Centre and corner notes
Plus automatic candidates when you want them.
Cell-first or number-first
Pick a cell then a digit, or the other way round.
Left-handed and one-handed
Controls move to where your thumb is.
Hardware keyboard
Everything on the board can be played with keys.
High contrast
Stronger digits and lines in every theme.
Gentle on motion
Animation can be reduced or turned off.

And a few more things

TogetherSolve the same board with a friend in a private room. Optional, and online only.
Sudoku postcardsSend a puzzle and a short note as a link. No account needed.
Scan & PlayPhotograph a paper puzzle to play it. The photo is read on your phone and never uploaded.
Progress at your paceStatistics, a calendar and achievements that never expire or punish a missed day.

A little puzzle, just for you.

Take a tiny break. Your next favourite ritual starts here.

Open the full-page board

A gentle start

On a keyboard: arrow keys to move, numbers to fill, Backspace to erase, Ctrl or ⌘ + Z to undo.

Your next favourite little ritual.

Beautiful puzzles. Cozy moments. Made for you.

Coming soon toApp Store
Coming soon toGoogle Play

SUDORI isn’t in the stores yet. It’s coming to iPhone and Android, and the puzzles on this page are yours to play until then.