Introduction: on November 8, 2014, Blizzard announced that it launched a new series of “overwatch” (watch pioneer) after 17 years. The game type is mainly team FPS, which began beta testing in 2015. This is a multiplayer online shooting game and a team game. The story of the game takes place in the future Earth with highly developed science and technology. During the global crisis, outstanding soldiers, scientists, adventurers and strange people all over the world gathered together.