Game Description:Mastering the Sodoku grid is easier than ever with this DS game that lets you play as fast as your mind can move! Soduku Gridmaster welcomes players of all skills with four difficulty levels and performance-based rewards that lead to unlockable puzzles. The DS stylus makes it a snap to play! Just tap the square you want to fill, then select the number from the number pad, or just write your answer right on the touch screen! You can select whole columns and rows with a touch and instantly highlight every on-screen occurrence of a certain number. Soduku Gridmaster also features four tutorials you can access anytime, even mid-game.