Making multiple films together. Normally Hollywood waits until it knows it's got a hit before ordering up a sequel, but that approach has problems. If they're lucky, the original writers will have left {{Sequel Hook}}s, but the seams [[ExpansionPackWorld will still be visible]], and they've got to get the original cast back together.

It's so much simpler to make the sequel before the first film is released. The stories can be written to fit together smoothly, and none of the cast are going to disappear, or demand more money.

Movie multipacks come in three varieties.

''[[TwoPartTrilogy Two sequels for the price of one]].'' Following a hit film with a two-pack of sequels, to complete the trilogy. Examples:
* ''Franchise/BackToTheFuture''
* ''Franchise/TheMatrix''
* ''Franchise/PiratesOfTheCaribbean'' (before the TrilogyCreep set in)
* ''Franchise/StarWars''
* ''{{Franchise/Avatar}}'' is going UpToEleven with four concurrently filmed sequels, creating a Two-part ''Pentalogy''.

''One story in N parts.'' When the story is too long to fit in just one part it can be split over several films, all but the last typically ending in a CliffHanger. Examples:
* ''Film/TheThreeMusketeers1973'' (even though this version was shot as one film, it was eventually released as two. This resulted in its director (Richard Lester) getting sued by some of its cast, who had only been paid for one film and felt they should have been paid for two.)
* ''Film/KillBill''
* ''Film/{{Superman}}''; written as a 5-hour epic, shot as two movies, though the second was mostly reshot after its director (Richard Donner) was fired.
* ''Manga/DeathNote''
* ''Film/TheLordOfTheRings'' and ''Film/TheHobbit''
* ''Film/AvengersInfinityWar'' and ''Film/Avengers4'' form a two-part story that caps off the entire ''Franchise/MarvelCinematicUniverse'' up to that point, with the first movie ending on a major cliffhanger. They were originally marketed as ''Infinity War: Parts One and Two'' before the second received its own (as-yet-undisclosed) title.
* ''Film/JusticeLeague2017'' was initially intended to be shot in this way, but was released as a single film that doesn't count as this trope outside the larger scope of the Franchise/DCExtendedUniverse.

''String of stories.'' Particularly with [[TheFilmOfTheBook book adaptations]], the story may naturally come as a multi-volume epic. Each individual film has closure, not a cliffhanger, but together they form a greater whole. As of late, adaptations have also been subjected to the above ''One story in N parts'' phenomenon by splitting the final book into two films, essentially doubling down on this trope. Examples:
* ''Literature/HarryPotter''
* ''{{Literature/Twilight}}''
* ''Literature/TheHungerGames''
* ''{{Literature/Divergent}}''. In this case, adapting the final book ''Allegiant'' into two films resulted in disaster when the first part flopped at the box office. Lionsgate currently intends to produce ''Ascendant'' as a TV movie and/or miniseries to resolve the cliffhanger, but lead actress Shailene Woodley may not be participating because that wasn't what she was hired to do.

All the varieties are often sold as {{Boxed Set}}s.