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
Living dinosaurs inhabit a remote world
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Each film sends its characters somewhere isolated and inconveniently full of living dinosaurs: an island, the Earth's interior, another dimension, or prehistoric Earth.
medium
Ballroom or Latin dance drives the story
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Ballroom and Latin dance are not decoration here. Lessons, rehearsals, and competitions push each story forward and force the leads onto the floor.
hard
Technology records or replays memories
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The machines in these films capture human experience and play it back. That sounds useful until grief, surveillance, commerce, and death get access to the controls.
tricky
Single-word titles that name foods
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Milk, cake, chocolate, and butter make a respectable shopping list. Their films contain politics, chronic pain, romance, and competitive sculpture, which is less tidy.