some play styles aim to create a specific kind of narrative. In those games, the players and the referee (if there is one) enter play with a shared idea of the kind of story they want to tell, and they choose a system and style that supports that outcome.
Other play styles don’t work that way. The narrative emerges from the unfolding events of the campaign, without being shaped by the out-of-game expectations of the players or referee. The story is discovered through play, not authored in advance.