Library

This is a game. A game that has been passed down through the ages but no one knows how to play. The world does not know why it appeared or when it appeared. All I know is that every time the game appears, it will cause huge waves and change the world structure. Some people say that this is God's game, watching every move of the players for a laugh. Some people say that this is not a game, this is a conspiracy, a conspiracy to change the world structure. Some people also say that maybe the original founder of the game just made it casually and did not expect it to develop like this. No matter what everyone says, this game, no, or this "game", has never been unveiled. Now, a group of people have been selected into this "game". Will the final secret be revealed? If it will be revealed, what is the ultimate secret of this "game"?