"Sudoku world is an interesting number puzzle game, a classic brain game for free. Sudoku allows you to relax and focus at the same time. There are 4 levels in the game, you can choose simple puzzles or challenge experts. Puzzles are created randomly to ensure that every game has new fun. Sudoku world can also count your game data: the number of puzzles completed, the average completion time and the fastest completion time. Each time you finish, you will get a ""tip"" for the next game.
How to play Sudoku:
1. Fill in all the blanks with numbers from 1 to 9.
2. The number in each row, column and 3x3 block cannot be repeated.
3. You can undo the previous operation.
4. Note taking function can help you solve puzzles better.
Features:
-Simple UI, easy to operate
-The sound of relaxation
-Four difficulty levels
-Unlimited undo operations
-Note taking can be turned on and off at any time
-Number of free tips
-Auto save
-Game statistics
-Offline play
-It's completely free"
