Mark Wahlberg didn't know anything about the game, but in order to better understand the characters and plot, he gave the original game of the film to his assistant and sat there to watch how it cleared.
Director John Moore is a loyal player of the original game.
The script of the film is written by Bao Songen, which is also his first screenwriting.
In order to better show the role of fitness hand, Mark Wahlberg, who was already very strong, took part in boxing courses.
In the film, a shootout in which Mark Wahlberg fired with two guns. Although it was only a few minutes of the scene, the stills took eight weeks to set up the scene. The shooting method was divided into multiple shots, which cost more than one shot. It was only completed in a week.
In order to play the role of a female Russian gangster killer, Mila Kunis received rigorous training and earnestly learned fighting skills and the use of weapons.
Director John Moore doesn't like CGI technology very much, so the fighting and gunfight scenes in the film are actually filmed.
