It should be pointed out that the average netizen’s concept of online games basically remains in the stereotyped impression of entertainment. But in fact, the internal structure of online games has developed to a considerable extent and has rich connotations. For example, functional games are an extremely important part of online games and are a type of game whose main purpose is to solve social and industry problems, but they are rarely known in the mainstream.

In 1994, based on the experience of the Gulf War, the U.S. Marine Corps established the world's first functional game military training institution, using functional games as an auxiliary means for military simulation training. After the explosive development of the Internet field at the turn of the century, functional games gradually expanded into the civilian field after 2006, playing an important role in education, medical care, transportation, emergency management, environmental protection, corporate management, cultural inheritance, etc., providing irreplaceable governance exercises and experience for government departments and social institutions in many countries to solve various problems in social public life.