This is a version of Samuel Loyd's fifteen puzzle, or as some like to call it, a sliding block puzzle. In this game you can play using both numbers and pictures. The game comes with five beautiful pictures by Mike Bonnell you can play with, or you use your own pictures if you want to! You can choose different board sizes (e.g 3x6 or 7x5). If you would like to continue playing the same puzzle the next day, the game will let you save your progress.