The well known tile puzzle invented in 1880 by Chapman Noyes. It has a natural feeling when moving tiles and acts just like the real one.
It starts with the 4x4 game. After shuffling you can move the tiles one or more at once. Whenever you want you can start over by pressing the shuffle button.
After each solved puzzle you have the opportunity to challenge friends to beat your score.
Two more games(3x3 and 5x5) and two more themes can be selected from the settings.
Have fun!