Short answers, pulled from the story.
Final Fantasy: Unlimited is a 2001-2002 anime television series produced by Gonzo, TV Tokyo, Dentsu, avex mode, and GDH, based on the Final Fantasy franchise. It aired on TV Tokyo every Tuesday at 6:30 PM starting on the 2nd of October 2001 and ran for 25 episodes.
The planned 52-episode run was reduced to 25 due to low ratings in Japan combined with the financial failure of the film Final Fantasy: The Spirits Within. The shortened run left the main story unfinished.
Mahiro Maeda of GONZO directed Final Fantasy: Unlimited. Atsuhiro Tomioka wrote the scripts, and Square Enix game designer Akitoshi Kawazu served as base concept planner.
Nobuo Uematsu, Shiro Hamaguchi, and Akifumi Tada composed the music. Uematsu wrote the opening theme "Over the FANTASY," with its single released on the 5th of December 2001.
ADV Films licensed the series for North America and the United Kingdom on the 1st of May 2003. The North American release reorganized the 25 episodes across five discs labeled Phase 1 through Phase 5.
The story continued through novels published by Kadokawa Shoten, a web serial titled FF:U After Spiral, audio dramas on TV Tokyo's Anime-X mobile service, two drama CDs from Avex mode, and a radio drama released on the 26th of December 2002 that concluded the Lisa and Soljashy conflict.