we created this innovative sudoku free game with several various key features:
?Variation sudoku such as X and Color
?Career statistics documentry informations about your gaming history
?Game center provides global leaderboard and achievement after sign in with Google account, which you can share or compete with your friends or others
?Online puzzle offer you to update your puzzle from the server at any time, without re-installing the game
?Custom puzzle can let you create your own sudoku as composed by yourself, or from the papers
?More than 15000 puzzles are waiting for you

during the game, you will be able to
?Auto highlighted numbers for intelligent hint
?Use pencil marks
?Double-click the cell to erase numbers
?Use various kind of items, like check the errors
?Unlimited redo & undo

you can also found more useful functions like
?You can share to your friends via Google+, twitter and facebook
?Auto-save, you can pause at anytime you like without losing any progress
?Timer, you can also disable it in settings
?Selected cell highlighting
?Incorrect digits mark
?Enchanting visual effects
?Various numerals like Chinese or Roman
?Give us feedback in the game, with your help we'll make it better

We hope you will enjoy the stunning designs of our sudoku, it's really a brainteaser game which help to workout your brain! All for FREE!