Sudoku Gridmaster Nintendo DS

After introducing sudoku puzzles in Brain Age, Nintendo focuses on a standalone release with Sudoku Gridmaster. The game features approximately 400 puzzles spread across four challenge levels: practice, easy, normal, and hard. A touchscreen interface has players either writing numerals with the stylus or tapping on a list of numerals to enter them on the grid. In addition, the game includes an option to highlight an entire row, a 3x3 block, or all instances of a specific numeral for easier viewing. Four builtin tutorials will help new players learn strategies for solving puzzles quickly and efficiently as they attempt to earn stars, which unlock new puzzles and other surprises. Best times are also tracked for each puzzle, allowing players the chance to revisit completed challenges to improve their overall score. ~ Scott Alan Marriott, All Game Guide