Structure, mostly. For example, in Memento telling the story backwards. In Inception, the nested dreams. In the Prestige, presenting the plot in the style of a

Structure, mostly. For example, in Memento telling the story backwards. In Inception, the nested dreams. In the Prestige, presenting the plot in the style of a magic trick (which the book does not do). In Tenet, telling the story backwards and forwards. In Dunkirk, mirroring the chaos of the evacuation with the chaotic/non-linear presentation of events.