Sudoku Gridmaster is a puzzle game for the Nintendo DS that falls squarely in the brain-teaser genre. It leverages the handheld's touch screen for intuitive number placement. Players are tasked with filling a 9x9 grid with digits so that each column, row, and section contains numbers from 1 to 9 without repetition. The game features hundreds of puzzles across various levels of difficulty, catering to both beginners and seasoned Sudoku enthusiasts. Its portable nature makes it an ideal choice for mental workouts on the go.