Do you Zudo?
A new dimension
in SUDOKU!
ZudoCube is Sudoku, rebuilt as a cube or squished flat. Six faces share edges and corners — every number you place echoes across three faces at once, turning each cube into one giant puzzle.
The puzzles
Three shapes of Zudo.
The ZudoCube
Cubes
Six full Sudoku faces folded into one object — every edge shared, every corner three puzzles at once.
Explore
The ZudoFlat
Flats
Three faces joined at a single corner, laid flat — all the cross-face logic with everything in one look.
Explore
The ZudoTrad
Traditional
The traditional single grid, sized for everyone — from a kids' 4×4 up to this 12×12, where letters join in.
ExploreThe idea
What if the puzzle on the page had a back?
Sudoku is one of the most beloved puzzles on earth. We thought it deserved another axis. Every face of a ZudoCube is a complete Sudoku grid — but the edges and corners share the same numbers. Solving one face nudges three others.
Read the story
Three ways in
Pick your medium.
Object
The physical cube
Premium cardstock, a simple cardboard cube you can hold in your hands: 4×4, 6×6, 8×8, 9×9, 12×12 and 16×16.
From $19
ShopSoftware
Web & mobile
Play, save progress, and get hints from the same engine. Free to use.
Free
Play nowRitual
Subscribe
One new puzzle delivered to your inbox every morning. Monthly subscription.
From $4 / mo
Subscribe
Morning ritual
A puzzle with your coffee.
Subscribe and a new puzzle arrives every morning — in your inbox or physically delivered to you in your hands. Built around the rhythm of your day, not a streak counter.
- New 9×9 daily puzzle, hand-curated for difficulty
- Pause anytime; cards keep coming in the mail
- Free physical cube every quarter
- Solve in the browser, on iOS, or with pencil and paper
The app
In your pocket.
The same wave-based solver, the same hand-tuned hints. Free in your browser, offline on iOS. No streaks, no ads, no nudges.
Engine
Rust + WebAssembly
Web app
Free
iOS app
Free + IAP
Desktop
Coming soon
Do you Zudo?
The cube is patient. It will wait.
Try the web game free, or order your first cube. Either way, no streaks, no notifications, no nudges. Just a quiet hour with a puzzle.