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 often used as the background theme for the World Map.

The main theme of the series itself is considered to be "Final Fantasy," also known as "Opening Theme" in older iterations.

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. The main themes of both 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 Celtic style.

Final Fantasy V
The main theme of Final Fantasy V is simply called "Main Theme of Final Fantasy V" and only plays during the opening movie and when Bartz, Faris, and Lenna travel to Galuf's World. Arrangements of this theme include "Four Hearts," which is played on the World Map of Bartz's World.

Final Fantasy VI
Terra Branford's theme, simply called "Terra," 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 being made over the years, both fan made and official. 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 "CRISIS CORE Theme." 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 "CRISIS CORE THEME" title, such as "Dreams and Pride," "Chaotic Battlefield," and "Truth Behind the Project." The tune is heard during significant plot events.

Final Fantasy VIII
"Blue Fields" is often considered the main theme of Final Fantasy VIII, although Nobuo Uematsu, composer of the game's soundtrack, does not agree with that definition and places "Liberi Fatali" and "Eyes on Me" as the main themes of Final Fantasy VIII.

Final Fantasy IX
The main theme of Final Fantasy IX is simply "Main Theme," though this theme is not featured in the game's original soundtrack, but instead in Final Fantasy IX Original Soundtrack PLUS. A variation of this theme, "Over the Hills," serves as the Overworld theme for the first three discs of the game, later replaced by "Another Nightmare." "Melodies of Life" is the game's vocal theme, as well as a more orchestral variation of the main theme, featured during the closing credits. Yet another track, "A Place to Call Home", serves as the game's title theme.

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
"KUON: Memories of Waves and Light" 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. "KUON: Memories of Waves and Light" 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
"FINAL FANTASY XIII - The Promise" is the main theme of Final Fantasy XIII. It plays in the title screen, and several variations carry the theme's tune, including "Sunleth Waterscape" and "Archylte Steppe," but most notable being "Serah's Theme."

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

"Paradox" is another important theme of XIII-2. It serves as the base of tracks like the frequent battle theme "Paradigm Shift," "The Story So Far...," "Oracle Drive," "Eyes of Etro," "Oathbrand," "Yeul's Theme," "Song of the Farseers," and "Time's Master."

Lightning Returns: Final Fantasy XIII
The main theme of Lightning Returns: Final Fantasy XIII is "Blinded by Light". Used to emphasis Lightning's central role in the game, it appears both in its original Final Fantasy XIII form and through the majority of tracks. Among them are the battle themes "Crimson Blitz" and "Savior of Souls", and other tracks in the game such as "Last Resort", the two segments of "Song of the Savior", "Humanity's Tale" and "Epilogue".

"Almighty Bhunivelze" is a secondary theme representing Bhunivelze. It is used a few times in the game, most notably in the theme for the Ark, a crucial location in the game.

Final Fantasy XIV
The main theme of Final Fantasy XIV is "Answers." It is played in the opening of each storyline, as well as in the End of an Era video. At seven minutes and eleven seconds, it is the longest main theme to date in the series.

"Answers" returns to Final Fantasy XIV: A Realm Reborn as it is featured in the opening movie.

Final Fantasy XV
The main theme of Final Fantasy XV is "Somnus." It was first released on the composer Yoko Shimomura's album Drammatica.

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 during 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."

Final Fantasy Type-0
"We Have Arrived" and various alternative versions of it are the main theme of Final Fantasy Type-0.

Dissidia Final Fantasy
Dissidia Final Fantasy's main theme is called "The Messenger," and has two alternate vocal versions, "Chaos" and "Cosmos," as well as various other arrangements. 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.