The Marvel Cinematic Universe enjoyed several experiments in translating comic book storytelling techniques to the big screen. Cross-over events weren't unheard of in blockbuster cinema, but Marvel elevated the concept to a sprawling saga with gradually vanishing distinctions. Gigantic ensemble pieces and team-ups between ostensibly unrelated characters remain rare outside the superhero genre. However, this all-consuming routine has gradually created a comic book-style roster, which could be too much for the films to handle.