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Sudoku

Sand Games · Sep 14, 2026

A casual Sudoku game that lets you draw out your reasoning on the board.

About Sudoku

Work through 100 classic Sudoku puzzles, ranging in difficulty from Easy to Master. Draw freely on the board to visualize your reasoning as you solve. No ads or in-app purchases. Key Features: Color cells and possible numbers, and draw lines between them to keep track of your reasoning right on the board Find a challenge that suits you with difficulty ratings based on solving techniques. Built-in puzzles, puzzles you enter, and randomly generated puzzles all use the same standard Have the game generate more puzzles at your chosen difficulty, with six levels from Easy to Grandmaster Progress saves automatically, so you can take a break and pick up where you left off Play entirely offline — no internet connection required Use small numbers to mark what could go in each cell, or choose to have the game list them at the start or remove ruled-out possibilities as you fill in numbers Highlight matching numbers across the board to make them easier to find and compare Turn on optional warnings to spot repeated numbers in the same row, column, or 3×3 box Undo a mistaken action, or restore an action you just undid If you're unsure about a number you've entered, check whether it's correct, up