Description from App Store:
The classic 15-puzzle game (also called Gem Puzzle, Boss Puzzle, Mystic Square) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing.
There's 4 grid sizes (3x3, 4x4, 5x5 and 6x6) to play.
The BEST free tile sliding puzzle game on the App Store. Just slide the tiles to put them in order, and try to beat your best time!