FifteenPuzzle can be purchased on Google Play
The application starts, as a presentation of its features, by randomly selecting a picture and with automatic animation begin scrambling the tiles of the frame of the right and showing on the left one which of them are or aren’t misplaced.
By pressing the Start a button this automatic animation stops and randomly appear a new picture which is disordered until there is none tile in its right position. That’s when the user begins to play by touching a tile that’s besides the one missing to move that one to this position.
The user can be watching his performance by looking onto the left frame which tiles are in their correct position, highlighting in full color a tile when in its right position on the right frame, but with transparency when not.
At any time, the user can commence a new puzzle by pressing the “Start” button. If the last one has no been concluded, a dialog box popup to ask for confirmation; otherwise, the new puzzle starts right away.