xkcd #3324: Ultimate Movie Series
Title text:
Sadly, none of the 14 Land Before Time films manage to make the list, although a small but devoted fan contingent argues that The Great Longneck Migration should beat out Guardians of the Galaxy.
Transcript:
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Source: https://xkcd.com/3324/
It’s not one installment per franchise, it’s the best Nth installment regardless of franchise. JJ Trek actually appears twice with Star Trek Beyond at 13, for instance.