Man
Once Upon a Time… Man
Originally produced in 1978, this series is the original series of the franchise, detailing the overall history of mankind. It was directed by Albert Barillé.
Space
Once Upon a Time… Space
Produced in 1982, this series was a science fiction follow up to the last episode of "Man", which was futuristic in scope. Several episodes of this series were made into a movie. It was directed by Albert Barillé.
Life
Once Upon a Time… Life
Produced in 1987, this series focuses on the workings of the human body, and has the children shown as the archetypes of various parts of the organism (cells, bacteria, etc.). It was directed by Albert Barillé.
Americas
Once Upon a Time… The Americas
Produced in 1991, this series focuses on the history of the American continent through all its settlements and their historical events. It was directed by Albert Barillé.
Discoverers
Once Upon a Time… The Discoverers
Produced in 1994, this series focuses on various thinkers and inventors throughout history, from the ancient Chinese, through Henry the Navigator, Gutenberg, Leonardo Da Vinci, Galileo, Newton, Marie Curie, until "tomorrow". It was directed by Albert Barillé.
Explorers
Once Upon a Time… The Explorers
Produced in 1996, this series focuses on various explorers, from "The First Navigators", through Vasco de Gama, Cabeza de Vaca and Humboldt, to Lewis & Clark and Alexandra David Neel. It was, as all the series before it, directed by Albert Barillé.
Earth
Once Upon a Time… Planet Earth
Produced in 2008, this series focuses on the preservation of the natural environment, and warnings about global warming, the greenhouse effect, pollution, and others. It features very different animation compared to earlier series. It was the last film directed by Albert Barillé, and the last series in the franchise to date. Unlike the others, this series has not yet been released in English.