Main theme

The Main Theme of a game in the Final Fantasy series generally refers to the most recurrent theme in the game or to the music heard while moving around the World Map. In Dissidia Final Fantasy, all the main themes of the games it represents appear as the "stage board" themes.

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 was 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 was included in the album Final Fantasy: Love Will Grow.

Final Fantasy IV
The main theme in Final Fantasy IV is fittingly called Final Fantasy IV Main Theme. It was included in the album Final Fantasy IV: Celtic Moon.

Final Fantasy V
"Ahead on our Way" is the main theme in Final Fantasy V and plays during the opening of the SNES version. A different version, Four Valiant Hearts, is the overworld theme that plays on the world map of Bartz's World.

Final Fantasy VI
"Terra", also known as "Tina", Terra's theme, is the main theme of Final Fantasy VI during the World of Balance. It is 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 main theme 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 was included as a orchestrated arrangement in the album Final Fantasy VII: Reunion Tracks.

Final Fantasy VIII
"Blue Fields" is the main theme of Final Fantasy VIII. 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 did not include the xylophone, instead relying on a string section to play the central melody.

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.

Final Fantasy X
"To Zanarkand" is the main theme of Final Fantasy X.

Final Fantasy X-2
"Eternity: Memory of Lightwaves" is the main theme of Final Fantasy X-2.

Final Fantasy Tactics
The main theme of Final Fantasy Tactics is called "Hero's Theme".

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
Also simply called "Main Theme", this song is the remix of Final Fantasy Tactics Advance's "Main Theme".

Dissidia Final Fantasy
Dissidia Final Fantasy's main theme is called "The Messenger", and has two alternate versions, "Chaos" and "Cosmos".