Fifteen puzzle - Free game

Summary
The 15-puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and many others) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The puzzle also exists in other sizes, particularly the smaller 8-puzzle. If the size is 3×3 tiles, the puzzle is called the 8-puzzle or 9-puzzle, and if 4×4 tiles, the puzzle is called the 15-puzzle or 16-puzzle named, respectively, for the number of tiles and the number of spaces. The object of the puzzle is to place the tiles in order (see screens) by making sliding moves that use the empty space.
(from Wikipedia, the free encyclopedia)

Features
+ High quality graphics and smooth gameplay
+ Ability to pick grid size of the puzzle from 3x3 up to 12x12 or more
+ The game is completely free
+ Different "maps" of the puzzle
+ Built-in chip's themes
+ Statistics
+ Ability to make puzzle from an image
+ Sound effects

Future plans
+ Fix possible bugs