Final Fantasy X[a] is a 2001 role-playing video game developed and published by Square for PlayStation 2. The tenth main installment in the Final Fantasy series, it is the first game in the series to feature fully three-dimensional areas (though some areas were still pre-rendered), and voice acting. Final Fantasy X replaces the Active Time Battle (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 Spira, a setting influenced by the South Pacific, Thailand and Japan,[2] the city of Samarkand in Uzbekistan has been cited as an inspiration for Zanarkand.[3] the game's story revolves around a group of adventurers and their quest to defeat a rampaging monster known as Sin. The player character is Tidus, a star athlete in the fictional sport of blitzball, who finds himself in Spira after Sin destroyed his home city of Zanarkand. Development of Final Fantasy X began in 1999, with a budget of more than $32.3 million ($61 million in 2024 dollars) and a team of more than 100 people. The game was the first in the main series not entirely scored by Nobuo Uematsu; Masashi Hamauzu and Junya Nakano were signed as Uematsu's fellow composers. Final Fantasy X was both a critical and commercial success, shipping over 8.5 million units worldwide on PlayStation 2. It has been cited as one of the greatest video games of all time. It was followed by Final Fantasy X-2 in March 2003, making it the first Final Fantasy game to have a direct game sequel. As of September 2021, the Final Fantasy X series had sold over 20.8 million units worldwide,[4] and at the end of March 2022 had surpassed 21.1 million.[5] A remaster, Final Fantasy X/X-2 HD Remaster was released for the PlayStation 3 and PlayStation Vita in 2013, for PlayStation 4 in 2015, Windows in 2016, and for Nintendo Switch and Xbox One in 2019.