Final Fantasy X is a developed and published by as the tenth main entry in the series. Originally released in 2001 for , the game was re-released as for and in 2013, for in 2015, in 2016, and for and in 2019. The game marks the Final Fantasy series transition from entirely backdrops to fully areas (though some areas were still pre-rendered), and is also the first in the series to feature . Final Fantasy X replaces the (ATB) system with the "Conditional Turn-Based Battle" (CTB) system, and uses a new leveling system called the "Sphere Grid".
Set in the fantasy world of , a setting influenced by the , and , the game's story revolves around a group of adventurers and their quest to defeat a rampaging monster known as Sin. The is , a star athlete in the fictional sport of blitzball, who finds himself in Spira after Sin destroyed his home city of Zanarkand. Shortly after arriving to Spira, Tidus becomes a guardian to to destroy Sin upon learning its true identity is that of his missing father, .
Like previous games in the series, Final Fantasy X is presented in a third-person perspective, with players directly navigating the main character, Tidus, around the world to interact with objects and people. Unlike previous games, however, the world and town maps have been fully integrated, with terrain outside of cities rendered to scale. As Tidus explores the world, he randomly encounters enemies. When an enemy is encountered, the environment switches to a battle area where characters and enemies await their turn to attack.
The gameplay of Final Fantasy X differs from that of previous Final Fantasy games in its lack of a . Earlier games featured a miniature representation of the expansive areas between towns and other distinct locations, used for long-distance traveling. In Final Fantasy X, almost all the locations are essentially continuous and never fade out to a world map. Regional connections are mostly linear, forming a single path through the game's locations, though an becomes available late in the game, giving the player the ability to navigate Spira faster. Like previous games in the series, Final Fantasy X features numerous , most notably the fictional underwater sport "blitzball"
