15 Puzzle is an entertaining mind game and is a sort of jigsaw with a sliding tiles. The goal of the game is to move a set of tiles on a grid to arrange them in an increasing order from 1 to 15. Tiles can be moved by clicking on them but the movement takes place only if the adjacent tile is empty.
The app also tracks time and number of moves involved to solve the puzzle.
The game is mobile implementation of the classic 15 Puzzle which was quire popular in the US in the 1880s.