You can play 5 types of Sudoku games. It provides ease of use and almost every feature you can imagine. Enjoy an infinite number of sudoku games with powerful features all your life. Everyday world sudoku competition Features - 5 type of Sudoku games Original sudoku Compare sudoku Killer sudoku Calculation sudoku Symbol sudoku - Daily Sudoku Playing the same sudoku puzzles with worldwide users every day - Provides an infinite number of puzzles. Provides an infinite number of puzzles and you can play it all your life. - You can choose a game level among 5 different levels - Autosaving Always the status of games will be saved and then you can see the last screen when you restart the game. - Memo for candidate numbers You can enter candidate numbers in a cell that you don't know the answer to immediately. It will help you to play the game. - Unlimited undo/redo You can go back to the previous status using the undo/redo function. - Unlimited bookmarks You can move to a saved position using a bookmark. You can save Unlimited bookmarks. - Supporting 5 languages (English, Korean, Japanese, 2 Chinese) - Hint function Hint function tells you the answer to a cell when you meet a difficult cell. - Display duplicate numbers When you enter a duplicate number, the number will be displayed in a different color. It will help you to play games. - Full support for Retina display Provides a clear screen with supporting Retina display - When you double-tap the screen the mode will be changed to memo mode - Display with the different colors where you need to compare the numbers. The cells that you should compare the numbers will be painted with different colors. It will help you to play games. - Various settings Sound Effects On / Off, change the language, etc. - Feedback function You can report a bug or your opinion and are able to communicate with the developer.