FFXI meaning in Computing ?

Final Fantasy XI, also known as Final Fantasy XI Online, is a massively multiplayer online role-playing game (MMORPG), developed and published by Square Enix as the eleventh main installment of the Final Fantasy series. Designed and produced by Hiromichi Tanaka, it was released in Japan on May 16, 2002, for PlayStation 2 and Microsoft Windows-based personal computers in November of that year. The game was the first MMORPG to offer cross-platform play between PlayStation 2 and personal computer. It was also the Xbox 360's first MMORPG. All versions of the game require a monthly subscription to play.

The story is set in the fantasy world of Vana'diel, where player-created avatars can both compete and cooperate in a variety of objectives to develop an assortment of jobs, skills, and earn in-game item rewards. Players can undertake an array of quests and progress through the in-game hierarchy and through the major plot of the game. Since its debut in 2002, five expansion packs have been released along with six add-on scenarios. Each expansion pack and add-on brings a new major storyline to the Final Fantasy XI world, along with numerous areas, quests, events and item rewards.

In 2015, Square Enix released the final main scenario for Final Fantasy XI titled Rhapsodies of Vana'diel. Final Fantasy XI became the final active server on the PlayStation 2 online service. Support for the PlayStation 2 and Xbox 360 versions was ultimately ended on March 31, 2016, leaving only the PC platform playable. A mobile client for the game was under development by Square Enix in collaboration with Korean developer Nexon, using Unreal Engine 4, but was cancelled in late 2020. A spinoff mobile game, Final Fantasy Grandmasters was released on September 30, 2015. As of September 10, 2020, a new, episodic story series titled The Voracious Resurgence has since been added to the game.