Spoilers ahead: for the puzzle and the movies/games
This page reveals all categories and answers for this puzzle. It also discusses plot details, story endings, and other spoilers for some of the movies/games shown.
easy
Titles Naming Creatures Or Nonhuman Beings
The Princess and the Frog · The Mummy · The Fly · The Thing
The connection is right in the titles: a frog, a mummy, a fly, and a thing. The joke is that every title starts the same way, but the useful clue is what each title names after that.
medium
Adapted From Modern Fiction
The Handmaiden · The Long Walk · The Mist · The Princess Diaries
hard
Satires Of Appetite And Excess
The Taste of Money · The Wolf of Wall Street · The Menu · The Substance
Each film is about wanting too much and building a whole world around that hunger. Money, status, food, youth, beauty, and power all become things people consume until the appetite starts consuming them back.
tricky
The Real Setup Is Hidden
The Haunted Mansion · The Perfection · The Matrix · The Cabin in the Woods
Each film starts from a situation that looks easier to understand than it is: a mansion visit, a reunion between musicians, ordinary reality, or a cabin trip. The real machinery is hidden until the story lets you see who built the trap.