**COME and PLAY the best Classic Sudoku game! Train your brain, Kill time and get arter, for FREE! ** This is the BEST app to train your brain and have fun with your family and friends, at the same time! To help keep you occupied during your idle time, we tested dozens of games with great user reviews to find the best ones that will work even in Airplane Mode . Aside from that, our only criteria was that the game could be downloaded for free from Google Play, so anyone can use the Sudoku to the perfect time-waster. Number puzzles appeared in newspapers in the late 19th century, and developed into this famous and classic Logical game of Sudoku. It has been one of the most popular and classic logical puzzle games since appearance, for free! The rule for the Sudoku number puzzle game is quite easy to master, the goal of this logical game is to fill a 9*9 grid with numbers so that each row, column and 3*3 section contain all of the digits between 1 and 9, without repeating. In your android devices, just navigate the grid with the gesture of clicking on the screen and input the number in the grid you have confidence with. So, is this all with our Sudoku ? Not at all! Features: - Beautiful minimal design with relaxing music. - Save your progress & continue playing. - Four perfectly balanced difficulty levels - Two beautiful grid styles - Choose light or dark grid fonts with adjustable size - Pencil marks with automatic insertion and deletion. - Useful statistics to keep track of your progress - Unlimited Undo/Redo - Auto-Fill Notes Option - Auto-Clear Notes Option - Auto Error-Checking Option - Duplicate digit and error highlighting options. - Timer, to see how fast you are solving various difficulty puzzles. - Keep your screen awake while playing the game. - Casual mode and Classic Mode Enjoy a clear, easy to read, and customizable Sudoku board with visual guides that make glancing at the possibilities a breeze. Except the traditional fun, we have got more tricks to help you enjoying the time of training your brain with this classic logical number puzzle game. Highlights: 2000 Levels From beginners to professionals, all of the users who want to try with Sudoku - logical number puzzle game - can find their interests in this game. Set a goal everyday, such as 10 levels, and challenge them, you can find your logical thinking ability can be improved quite quickly through passing the levels. And all levels are for free! Smart Guidance Not as dull as the offline number puzzle game, our Sudoku game has its own intelce to help you passing different levels. The optional error checker would send information to you when you input an incorrect number into the grid or chose a wrong grid for the number. Clue Marker Not sure about the number in this grid? 3 number options existing for the moment? Can not remember the choices just now? Use our clue maker function, write down all numbers that are possible in one grid, and you would not miss any chance to win. Also, time would not be wasted as you won’t turnover all your number choices made many steps ago. Multiple Themes Tired of the boring black and white grids and numbers? Don’t be upset, we have multiple themes of grids and numbers. Colorful and HD pictures are waiting for freshening your brain. The only thing you need to do is to chose the one you like, for free! Also it is changeable if you feel bored with one theme. Don’t waste time in decision making, just download this super number puzzle game for free, you would enjoy and love it! Feel free to contact us: gamesfeedback@outlook.com