Main theme

The Main Theme of a game in the Final Fantasy series generally refers to the most recurrent theme in the game, which is sometimes the music heard while moving around the World Map.

Final Fantasy
The main theme of the original Final Fantasy is simply called "Main Theme".

Final Fantasy II
The main theme of Final Fantasy II is simply called "Main Theme". A vocal arrangement of this theme, "The Promised Land", is included in the album Final Fantasy: Pray. Both main themes, those of the original Final Fantasy and Final Fantasy II were released together on the same compilation, Final Fantasy I & II Original Soundtrack.

Final Fantasy III
"Eternal Wind" is the main theme of Final Fantasy III. A vocal arrangement is included in the album Final Fantasy: Love Will Grow.

Final Fantasy IV
The main theme in Final Fantasy IV is simply called "Final Fantasy IV Main Theme". It is included in the album Final Fantasy IV: Celtic Moon arranged in a traditional Irish style.

Final Fantasy V
The main theme of Final Fantasy V is simply called called "Main Theme of Final Fantasy V", and only plays during the opening movie. Arrangements of this theme include Four Hearts, which is played on the world map of Bartz's World.

Final Fantasy VI
"Terra", Terra Branford's theme, is the main theme of Final Fantasy VI during the World of Balance. It has become one of the most popular video game tracks ever, with several rearrangements, both fan made and official, produced over the years. It has been included as a rearrangement in the albums Final Fantasy VI: Grand Finale, Final Fantasy: Pray, and Piano Collections: Final Fantasy VI.

"Searching for Friends" is the alternative theme heard during the World of Ruin. It is first played after the player acquires the Falcon.

Final Fantasy VII
The main theme of Final Fantasy VII is simply called "Main Theme of Final Fantasy VII". It is included as an orchestrated arrangement in the album Final Fantasy VII: Reunion Tracks. The piece is played on the world map during disc 1, before being replaced by "The North Cave" after the events taking part in North Crater.

Crisis Core -Final Fantasy VII-
The main theme of Crisis Core -Final Fantasy VII- is "Theme of CRISIS CORE -Successor-". Due to its importance towards the game's theme of legacy, the tune is rearranged into numerous tracks such as "Burden of Truth", the main battle theme "Encounter", and "Melody of Agony" with various instruments ranging from piano to electric guitar. The main theme itself is also rearranged into other tracks under the "THEME OF CRISIS CORE" title, such as "Dreams and Pride", "Chaotic Battlefield", and "Truth Behind the Project". The tune is heard during significant plot events.

"The Price of Freedom" is the game's second main theme. Its tune is also rearranged into tracks like "Duty and Friendship" and "A Moment of Courtesy". It plays predominantly during cutscenes that focus on Zack and Angeal, but "The Price of Freedom" is played famously during Zack's Final Stand.

Final Fantasy VIII
"Blue Fields" is often considered the main theme of Final Fantasy VIII, although Nobuo Uematsu himself doesn't consider Final Fantasy VIII to have a main theme at all. It features a xylophone playing the central melody, this being the first time a synthesizer did not fulfill the role. The orchestrated rearrangement included in FITHOS LUSEC WECOS VINOSEC: Final Fantasy VIII does not include the xylophone, instead relying on a string section to play the central melody.

When asked about composing main themes for the Final Fantasy series, the composer Nobuo Uematsu said this regarding Final Fantasy VIII.

Final Fantasy IX
"Over the Hills" is the main theme of Final Fantasy IX. It is largely composed of the central melody of the song "Melodies of Life". The track is featured prominently in many stages of the game, including as the vocal performance during the ending. It is replaced on the world map during disc 4 with "Another Nightmare".

Final Fantasy X
"Zanarkand" is the main theme of Final Fantasy X. The theme is first played during the game's opening, which shows Tidus and the others at the ruins of Zanarkand. "Zanarkand" shares the greatest importance in the soundtrack, along with "Suteki da ne", being played at various significant plot events, typically rearranged and under different titles, such as "Movement in Green", "The Truth Revealed", and a large part of Final Fantasy X's "Ending Theme".

Final Fantasy X-2
"Eternity ~Memory of Lightwaves~" is the main theme of Final Fantasy X-2. It plays during the cinematic introduction before the title screen. A vocalized arrangement, called "Morning Glow," is released in the Final Fantasy X-2: Vocal Collection - Yuna album. "Eternity ~Memories of Lightwaves~" is also included in the Final Fantasy X-2 Piano Collection album.

Final Fantasy XI
The main theme of Final Fantasy XI is the "Vana'diel March". It plays during on the start menu of the game's original version.

Final Fantasy XII
"Opening Movie (Theme of FINAL FANTASY XII)" is the main theme of Final Fantasy XII. It is one of the longest main themes, reaching almost seven minutes, and it plays during the game's cinematic prologue. Many other tracks on the soundtrack use the leitmotifs from "Theme of Final Fantasy XII".

Final Fantasy XIII
Due to its recurrence and importance in the game, "FINAL FANTASY XIII ~The Promise~" can be considered the main theme of Final Fantasy XIII. It plays in the title screen and several themes carry the theme's tune, the most notable being "Serah's Theme".

Final Fantasy XIII-2
The main theme of Final Fantasy XIII-2 is "FINAL FANTASY XIII-2 ~Wish~". Many tracks from the soundtrack use its melody as their base - notably "Serah's Theme ~Memory~", "Noel's Theme ~The Last Travel~" and "FINAL FANTASY XIII-2 ~Future~".

Final Fantasy Tactics
The main theme of Final Fantasy Tactics is called "Hero's Theme". The tune can be heard in several battle themes and cutscenes throughout the game.

Final Fantasy Tactics Advance
The main theme of Final Fantasy Tactics Advance is simply called "Main Theme". A part of this song had been played at the songs "Vanishing World" and "The Place We Should Return To".

Final Fantasy Tactics A2: Grimoire of the Rift
"Summer Vacation" is the main theme of Final Fantasy Tactics A2: Grimoire of the Rift. It was made into "Putting Words Together", "Unfold the Map", "Premonition of Origin", "The End of The Tale", and "Words Put Together".

Dissidia Final Fantasy
Dissidia Final Fantasy's main theme is called "The Messenger", and has two alternate versions, "Chaos" and "Cosmos". The main themes of the first ten games in the main series all play as "stage board" themes for each of the correspondent character's storyline.