Which Sudoku mode should I play?
Start with Classic if you are new to Sudoku. Try Mosaic (Jigsaw) for a fresh layout, Rainbow Bridge (Thermo) for extra clues, Morning Mist (Fog) for a puzzle that opens as you solve, Boulder Garden for obstacles to break, and Duel to race another player. Every mode uses the same rule: each row, column and region holds every colour once.
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Classic
Classic Sudoku
The standard rules: every row, column and 3×3 box holds each colour once.
See the rules -
Mosaic
Jigsaw Sudoku
The boxes become irregular shapes. Each shape holds every colour once.
See the rules -
Rainbow Bridge
Thermo Sudoku
Bridges start at a ringed hole, and marbles rise in tray order along them.
See the rules -
Morning Mist
Fog Sudoku
Clouds hide the board. Each correct marble lifts the clouds around it.
See the rules -
Boulder Garden
Boulder Garden
Boulders block holes. Every marble cracks the boulders in its row, column and box.
See the rules -
Duel
Sudoku Duel
Race a rival on the same puzzle. A wrong marble stuns you for 3 seconds.
See the rules
Sudoku variants FAQ
What Sudoku variants are there?
Popular variants include Jigsaw (irregular shapes), Thermo (rising thermometers), Killer (sums in cages), Diagonal (the two diagonals count too) and Fog (hidden cells). Marble Sudoku has Classic, Mosaic (Jigsaw), Rainbow Bridge (Thermo), Morning Mist (Fog), Boulder Garden and Duel.
Which Sudoku variant is best for beginners?
Classic Sudoku. Once its rules feel natural, Jigsaw and Thermo are good next steps because they change only one thing.
Do the solving techniques work in every mode?
Yes. Singles, pairs, X-Wings and the other techniques work in every mode. In Mosaic you use the shapes where you would use boxes.
Can I play Sudoku against someone?
Yes. In Duel you race a rival on the same puzzle, and the first to finish wins.
PLAY IT IN MARBLE SUDOKU
Play every mode in Marble Sudoku
Hand-crafted puzzles, soothing ASMR sounds and zen music, on a wooden board full of marbles.
