In the 2009 science-fiction film Avatar, director James Cameron conceived a fictional universe in which humans seek to mine unobtanium on the fictional habitable moon Pandora.

The fictional universe of the Harry Potter series of novels contains two distinct societies: the "wizarding world" and the "Muggle world".

a 2010 novel by American writer Charles Yu.

In Agatha Christie's mystery novels, several characters cross over different sagas, creating a fictional universe in which most of her stories are set.