Sudoku is a logic based brain training number placement puzzle game, available for free with thousands of levels and 6 difficulties from beginner to master.

The main objective the game is to fill a 9 * 9 grid with digits so that each column, each row, and each of the nine 3 * 3 subgrids that compose the grid contain all of the digits from 1 to 9.


Features:
- Disable sleep mode to focus on puzzle and prevent device going to sleep
- Notes mode to place multiple numbers in a block
- Highlight similar numbers in puzzle
- Highlight tiles mode
- Multiple themes including background colors, app icons, and fonts
- Light and dark mode support
- Game auto saves while playing
- Statistics and Game Center leaderboards


Available Difficulties:
- Beginner
- Easy
- Medium
- Hard
- Expert
- Master