There is no phase shift. In the game of shooting ducks, the phase shift is called "walking through the wall", which is against the rules of the game, which will not only ban the account, but also destroy the game experience. It is a multiplayer online game, and it requires at least three players to start the game. Players need to play different roles in the game to reason and play. Players need to find the murderer together and vote to arrest him. The winner of the game is determined by the survival of killers, policemen, civilians and other characters.