Shuffler Challenges is a free sliding puzzle game designed to frustrate the player with two puzzles every month - a not quite easy one and an (almost) impossible one - starting with the puzzles 'Gravity' and 'Gravity 1-X-O'. Don't try to directly move the tile in the middle (you can't).
The first two puzzles will stay active for a few weeks and will be replaced by two new ones afterwards.

For the unlikely case a huge number of players download this app and try to solve the puzzles - the one with the highest score who solves everything will get a special reward.

Good luck!