After reading about the developer's roadmap to the "new" FFXIV and how the transformation of the world map would be explained by in-game storyline, it hit me: the apocalypse that is going to happen that will change the whole world is referred to as the Seventh Umbral Era. Now in the game, during character creation, when you choose your nameday, the "months" proceed as the first astral, first umbral, second astral, second umbral, and so on, meaning that we are currently in the seventh astral era (the 14th metamorphosis of Eorzia) and the seventh umbral era will be the 15th version of Eorzia. This is final fantasy 14, and if i'm not mistaken final fantasy 1-13 all took place in different worlds (although, of course XII and tactics took place in the same world, as have other main-line sequels.) So my point is... are the developers insinuating that all final fantasy games essentially have taken place on the same planet, a planet that somehow routinely goes through metamorphoses? An interesting thought, regardless.