Chadwick Boseman stated in an interview that he based his accent he uses for the Marvel character Black Panther from a film he was working on where he played a man from South Africa. This is the film to which he was referring.
After playing in festivals and small venues for a few years, Netflix decided to acquire the film.
In addition to the video game "Payday 2" being explicitly featured in this movie, the game and the movie share some themes beyond organized crime and gratuitous violence, such as an important character who is a dentist but not only such.