Fifteen Classic app for iPhone and iPad

This is a classic puzzle game that was invented in the late 1870s in the
USA. The goal of the game is to arrange 15 tiles inside the 4 by 4
square in the correct order with the empty square in the bottom right
corner.You can do this by sliding the squares into the empty space. The
final score is calculated, based on how quickly the puzzle is solved and
also the aim of the game is to do the puzzle with the least amount of
slides possible.

Features:
- automatic feature does not display unsolvable puzzle
- You can change the digits,images and board skin (the colour or the
font of the picture)
- high scores are also a great feature of the game, compete with friends
and other people.
Enjoy the game.