Final Fantasy XIII.org  Final Fantasy XIII World / Locations Cocoon: Built by a great entity, it is a society floating in the sky, enclosed in a "shell" - Cocoon. It flourishes, protected by the great machines and living creatures invented by the Crystal.
The inhabitants of Cocoon, in a long period of tranquility, fear infection from the outside. Outside the shell, an underworld -- Pulse's entity awakens. Fearing this faceless invader, people begin to suspect one another, and hatred takes root.
Cocoon's government, wishing for stability, takes emergency measures. They arrest large numbers of citizens who were suspected of being "infected from the outside", and announced that they would be compelled to migrate to the underworld "Pulse".
Pulse: Final Fantasy XIII take place in the world called Pulse. In this world, those who live on land are hostile to those who live in the sky. So in the beginning of the game, the sky city named Cocoon is attacked by
people from the ground.
| 
