Lucis

a location from a game The Kingdom of Lucis is a city in the upcoming game, Final Fantasy XV, ruled by Regis Lucis Caelum CXIII. A nation said to keep the last known existing crystal in the world of Final Fantasy XV, it is described as a nation both highly advanced and developed, and culturally intact, with tradition vibrant and still alive with the "songs of swords and sorcery".

The city is a sprawling metropolis. Despite this, all trailers to date have depicted the city as being largely deserted. In the January 2011 trailer, toll gates located outside the city were seen stopping incoming traffic. It is unknown as to why the city may have been on lockdown. Locations within or around the city include Vallis Acerba (Latin for "Harsh Valley") and Nihilsomno (Latin for "Sleepless").

Story
Through the power of its Crystal, the city has risen as a modern-day metropolis and First World-esque power, putting it in conflict with the foreign "barbarians" that wish to claim the Crystal's power as their own, leading to a cold war. Prince Noctis has been described as the last heir to the kingdom's throne, responsible for defending the kingdom from outsiders. The royal family has been compared to a mafia crime family, and said to have reigned and protected the kingdom since its ancient beginnings.

During the 2011 Square Enix Conference trailer, the kingdom is attacked by the army of enemy kingdom Niflheim, its soldiers clad in medieval armor and wielding guns. Noctis and his companions are seen to be fighting them in various environments from hallways, streets and various rooms in a building. At one point in the trailer, Noctis and the others fight on moving aircraft that are controlled by the invaders. Suddenly, a mysterious woman wielding a large spear resembling a Dragoon appears, jumps onto Noctis's aircraft and prepares to battle him.

Etymology
Lucis, "of the light" or "belonging to the night", is the genitive form of the Latin Lux, "Light".

Trivia

 * Lucis is based off of.