About
Sudoku is a number logic puzzle: fill every row, column, and 3x3 box of the 9x9 grid with 1–9 without repeats. Dogepy Sudoku is free and online with three difficulties — Easy, Medium, and Hard.
Every puzzle is generated with a unique solution, and invalid duplicates are highlighted instantly so beginners can learn easily.
How to play
- Tap an empty cell, then use the number pad or keyboard (1–9).
- Tap the same number again or 'Erase' to clear.
- Pick a difficulty (Easy/Medium/Hard) to make a new puzzle.
Rules
- Place 1–9 exactly once in every row, column, and 3x3 box of the 9x9 grid.
- Duplicates in a line or box are highlighted in red.
- Pre-filled numbers can't be changed.
- Fill every cell correctly to solve the puzzle.
Tetris
The Midnight Museum
2048
Minesweeper