I don’t know if you heard, but Avengers: Infinity War is out on Friday, the first film in a two-movie event that is the culmination of over 10 years of the Marvel Cinematic Universe. No one knows what’s going to be left in place once the dust settles after Infinity War and its still untitled 2019 sequel. Will Captain America still be alive? Will Spider-Man still be Peter Parker? Will… the universe still exist? It’s honestly all a toss-up.

The cast list for Infinity War is intimidating, as is the sheer amount of knowledge required to (presumably) understand what the hell’s going on in Marvel’s wildly ambitious flagship blockbuster. With 18 films already under its belt, Marvel Studios have crafted an intricate franchise with information spread near and far about the Infinity Stones, the Mad Titan Thanos, and whatever the hell a “Kree” is. We’ve already put together a list of the films you need to watch before the big one. Here’s where to find them.

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