Have fun and unwind with this traditional puzzle game. Made famous by Sam Loyd in the late 1800's, no one knows for certain when or where sliding tile puzzles were first invented. Slide Puzzle is a modern version of this ago-old classic. Challenge yourself with three levels of difficulty and configurable grid sizes. Express your own personal style by customizing the tiles with your own favorite pictures. Kick back and relax while you enjoy the default picture set, which includes tranquil and serene all-original images of beautiful Northern Arizona. Hours of fun for all ages.