Rieze Maxia is the world of Tales of Xillia. In this world, spirits, monsters and humans coexist. These Spirits cannot be seen by humans unless they take a solid form, wanting to appear to the humans. The Lord of Spirits is Maxwell, accompanied by the Four Great Spirits Gnome, Undine, Efreet, and Sylph.
Rieze Maxia is powered by Spirit Artes, which is their electricity. This entire world uses these. It is used to power lightbulbs and other such appliances.
This world is split into two major countries - Rashugal and Auj Oule. Two countries with high tensions between them. Throughout the course of the game, a war develops between the two which eventually leads to the unification of Rieze Maxia.