==Plot and setting==
:Map of Spira:

The world of Final Fantasy X is known as "Spira". It consists of one large landmass divided into three subcontinents, surrounded by small tropical islands. It features diverse climates, ranging from the tropical Besaid and Kilika islands to the temperate Mi'ihen region to the frigid Macalania and Mount Gagazet.
Although it is predominantly populated by humans, Spira features a variety of races. Among them are the Al Bhed, a technologically advanced but disenfranchised sub-group of humans with distinctive spiral-green eyes and unique language. The Guado are somewhat less human in appearance, with elongated fingers and other subtle differences. They also have a natural propensity for magic and conjuring monsters. Still less human in appearance are the large, lion-like, one-horned Ronso, and the frog-like Hypello.
Spira's wildlife population introduces several new concepts into the series. Although most creatures are drawn from real animals, such as cats, dogs, birds and butterflies, a few fictional species appear, such as the gigantic, amphibious shoopuf and the emu-like chocobo. Both are used primarily for transportation purposes. Most other unusual creatures encountered in Final Fantasy X are fiends.
Spira is very different from the mainly European-style worlds found in previous Final Fantasy games, being much more closely modeled on Southeast Asia, most notably with respect to vegetation, topography, architecture, and names. Nomura has identified the South Pacific, Thailand and Japan as major influences on the cultural and geographic design of Spira, particularly concerning the geographic locations of Besaid and Kilika.[4] He has also said that Spira deviates from the worlds of past Final Fantasy games most notably in the level of detail incorporated, something he has expressed to have made a conscious effort to maintain during the design process. Though a southeast Asian theme is dominant, like other games in the franchise, Final Fantasy X borrows elements from many other cultures, featuring references to demonology, Hindu, Norse, Arabic and other mythologies. Psychology is also represented, with Carl Jung referenced by the aeon Anima.