Nintendo chose this summer to be the “summer of sudoku”.

This summer, on June 26, Sudoku Gridmaster launches exclusively for Nintendo DS. More than 400 sudoku puzzles will be available for you.

“The Nintendo DS touch-screen controls make it easy for players to write, change and save their answers,” says George Harrison, Nintendo of America’s senior vice president of marketing and corporate communications. “Sudoku Gridmaster is one of the many ways Nintendo is getting new audiences involved in video games.”

Sudoku Gridmaster contains four levels of difficulty, giving sudoku novices and experts alike a variety of challenging puzzles. Players use logic to fill a grid with numbers. It sounds simple, but its addictive nature has helped to make sudoku one of the most popular puzzle games in the world.

Sudoku Gridmaster also adds some features to enhance the experience in ways not possible when doing the puzzle on paper. With a touch, players can highlight an entire row or column. Or they can highlight all instances of numbers at once. And of course, a grid can be saved for hours or days before the player plays again.

Also, Sudoku Gridmaster is one of the first titles in Nintendo’s new Touch Generations brand. The distinctive Touch Generations logo helps gaming newcomers identify which titles might be the most fun for them.