Movies that take place in real time tend to be character-driven and in many cases have become cult classics among cinephiles. Early examples of the technique from Hollywood's Golden Age include Rope and The Set-Up. Among more modern films to use it are '90s German drama Run Lola Run and 2015's Victoria - notable for being shot in only one uninterrupted 138-minute take.
Real-time movies employ a method of storytelling in which the events in the film match the audience experience. Another way to think of it is that if the real-time movie plot takes place over 90 minutes, then that's the same run time as the film. In order to maximize screen time, handy tricks like split screens may be used to demonstrate plots taking place simultaneously, along with time-measurement devices like clocks or stopwatch-style timers, which serve to reinforce the real-time film narrative to viewers.