Warning: This post contains spoilers for all of the movies in the Marvel Cinematic Universe.

Marvel Studios has completely changed the way we watch movies. Every single one of their films is part of a “cinematic universe,” an interconnected set of stories that is incomplete unless fans watch each entry in the studio’s output. An essential part of Marvel’s successful strategy to build the world’s biggest film empire has been teasing future movies in mid-credit or post-credit scenes at the end of each film. These post-credit scenes stoke excitement for the next movie and tease how it might relate to the one you just saw.

This strategy has been so successful that just about every big-budget movie — be it spinoff, sequel or prequel — is now part of a “cinematic universe,” whether it be a DC Comics universe, a Lego universe or a Fast and Furious universe. And it’s now the norm to sit through the credits of these films waiting for some sort of teaser that will preview what movie is coming next. This even applies to non-superhero movies like Vice.

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