WEBSep 22, 2011 · This is a very simple 15 Puzzle game, created as a Rainmeter skin. You can find the description of the game here: http://en.wikipedia.org/wiki/Fifteen_puzzle. This skin have a shuffler application, which respects the solvability criterium, described here: http://mathworld.wolfram.com/15Puzzle.html, so every game is solvable.