Shi Sen is a Games & Entertainment::Puzzle & Word Games software developed by Big Fish Games. After our trial and test, the software was found to be official, secure and free. Here is the official description for Shi Sen: Use patience and careful strategy to clear the board of Mah Jong tiles in this stimulating puzzle game! Discover the most prudent paths by which pairs of tiles can be matched and removed from the board. Any matching tiles that can be connected by three or fewer uninterrupted lines can be removed. Clear the board; impress your friends; attain enlightenment. you can download Shi Sen free now.