Super Sudoku has been polished to perfection and boasts an intuitive, touchscreen game board that’s easy to navigate and fun to play!Take advantage of Automatic Annotation for effortless calculations of your achievements. Track your patterns with helpful stats and improve your game as you progress. Game Features:1. Totally FREE and No Ads.2. 5 levels of difficulty3. Undo/Redo and Autosave4. Standard Sudoku, Sudoku-x, Hyper Sudoku, Percent Sudoku, Color Sudoku and Squiggly Sudoku.5. Global Leaderboards support. Our rating system awards you points for each puzzle solved based on difficulty. Please kindly note that the permissions needed for this game is only used for the online leader board. Thanks.