At the beginning of the new century, the country is facing collapse, the unemployment rate continues to be as high as 15%, the whole society is in turmoil, the society is out of control, and campus violence continues, and even more than 1000 teachers are unemployed. Adults who lost confidence, fearing that teenagers would get out of control, decided to join hands with the government to suppress the riots and pass the "education reform in the new century" bill, that is, the "Royal War".

Rules of "BR method" survival game:

From a total of 43,000 junior high school students in China, a class is randomly selected to participate in a game of killing each other until only 1 life is left; Otherwise, kill them all ... The selected classes will be sent to the uninhabited island to play games.

Everyone got food, water, maps, flashlights and a self-defense weapon.

Everyone must wear a specially designed neck ring, which is waterproof and shockproof and can be used to detect whereabouts and eavesdrop. If the neck ring is forcibly destroyed, it will explode.

Some areas in the playground are listed as restricted areas, and intruders will be killed by neck ring explosion.

The restricted area changes its position every 1 hour or 2 hours.

There will be a broadcast every six hours to broadcast the list of dead people and announce the location of the restricted area in the next six hours.

The playground will be closely surrounded by soldiers, and there is no chance to escape.

The game time is limited to 3 days. There will be 1 more people alive and all the collars will explode.