Sudoku Classic is a free number puzzle game for your brain. Solve 9x9 sudoku grids offline, anytime - no internet, no account, no sign-up required.

Whether you're learning sudoku for the first time or training for expert-level puzzles, this offline sudoku app gives you a clean, paper-like experience on your phone or tablet.

WHY PLAY THIS SUDOKU GAME?
- 100% offline - play sudoku with no wifi and no account
- Thousands of unique sudoku puzzles generated on your device
- 5 difficulty levels: Easy, Medium, Hard, Very Hard and Extreme
- Every puzzle has exactly one correct solution
- Simple, clean design built for phones and tablets

CLASSIC SUDOKU FEATURES
- Notes mode - add pencil marks just like on paper
- Hints when you're stuck on a tricky sudoku puzzle
- Undo your last move instantly
- Clear a cell to fix mistakes quickly
- Smart highlights for row, column, 3x3 box and matching numbers
- Mistake counter keeps you focused - 5 mistakes ends the round
- Built-in timer to track your solving speed
- Second chance option if you run out of mistakes

TRACK YOUR SUDOKU PROGRESS
- Detailed statistics for every difficulty level
- Best time and average time per level
- Win rate, games played, wins and losses
- Current streak and best win streak
- Hints and mistakes tracked per level

SAVE AND CONTINUE ANYTIME
Your sudoku game saves automatically. Close the app and continue exactly where you left off from the main menu - no progress lost.

A CLASSIC BRAIN PUZZLE FOR EVERY DAY
Sudoku is one of the best brain games for logic, concentration and memory. Play a quick round on your commute, take a daily brain training break, or relax with a classic number puzzle before bed - all without an internet connection.

Download this free offline sudoku app now and start solving your next puzzle!