Walk into any airport or train station and you’re likely to see someone with a sudoku book. The number-based puzzle game has taken the nation by storm, and now a dedicated sudoku title is coming to the Nintendo DS. Once you’ve played Sudoku Gridmaster, you’ll never go back to pen and paper again.

• 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 gameplay features to help players 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.

Special powers/weapons/moves/features: The game features puzzles in four difficulty settings (practice, easy, normal and hard), and also has a fun unlockable system where players earn stars by performing well. If they gain enough stars, they’ll be able to take a test and prove their skills. Pass the test to win a special award and open up even more.