Sudoku Gridmaster uses intuitive Touch Screen controls that make solving the puzzles faster and easier than ever! Simply touch the square you want to fill in, then touch your answer on the number pad! You can also choose to forgo the number pad and write your answer directly on the Touch Screen.

Sudoku Gridmaster has plenty of helpful gameplay features to help you solve even the most complicated puzzles. Beginners will love the four in-depth tutorials that can be accessed at any time—even in the middle of a game!. Experts will appreciate the ability to highlight entire rows and columns with a single touch. And everyone will wonder how they survived without the ability to highlight all instances of the same number at once!

No matter what your experience, Sudoku Gridmaster has a puzzle for you! The game features puzzles in four difficulty settings (practice, easy, normal, and hard), and also has a fun unlockable system where you earn stars by performing well. If you gain enough stars, you'll be able to take a test and prove your skills. Pass the test to win a special award and open up even more puzzles!

GAME FEATURES
* Sudoku Gridmaster uses intuitive touch-screen controls that make solving the puzzles faster and easier than ever. Players simply touch the square they want to fill in, then touch the answer on the number pad. They also can choose to forgo the number pad and write answers directly on the touch screen.

* Sudoku Gridmaster features more than 400 sudoku puzzles, all of which were hand-picked by the sudoku masters at Nikoli the original creators of sudoku.

* How to progress through the game: Sudoku Gridmaster has plenty of helpful game-play features to help players solve even the most complicated puzzles.