In 2088, on the day the ninth season "Rune Era" of the global phenomenon-level game "Silver Spade" was launched, 87 million players entered the game at the same time, and the rules of the world were irreversibly distorted. The game and reality merge to form a strange space called the "Game World". Everyone is forced to participate in a real survival competition - the winner gets reinforcements and resources, and the loser pays all costs including life.
Every night, a random area will be transformed into a "temporary game world", and citizens must enter it to complete the game. Weird "draft areas", "equipment forging stations", and "chess summoning arrays" appear all over the city. The winner gets "reality enhancement" - maybe a longer life, maybe supernormal abilities. The loser will be "out" in a strange way: maybe it will turn into data fragments, maybe it will become a wandering "lost chess piece", trapped in a certain chessboard forever.