The Final Fantasy series has sometimes had its own title, Final Fantasy, alluded to, or used as a term by characters, within its fictional universes. An ultimate illusion is a phrase used to allude to the title, as well.
There is a Band ability named "Final Fantasy". It is used by combining Cecil (Attack) + Rosa (White Magic) + Kain (Jump) + Rydia (Black Magic) + Edge (Throw). Final Fantasy takes 75 MP to perform and is offense/defense mix combining the powers of all five fighters. It exceeds damage limit and heals allies. Despite its power, the casting time is long, and it is possible a player character could die before the party finishes.
An item called Final Fantasy appears within the game's data, but cannot be found within a normal playthrough. It doesn't have any purpose or usefulness, just like the Dragon Seal and Omega Badge.
- "I shall dance for eternity as the witch who brings you dread! You and I. Together, we shall create the final fantasy. Within are life and death and sweet dreams."
When Yuna tells Nooj about her plan of using love as plan B in stopping Shuyin, he calls it "an ultimate illusion", a synonym for "final fantasy". Another reference to the term Final Fantasy are the two Alchemist mixes, Final Phoenix and Fantasy Phoenix.
Gilgamesh's special attack is called Ultimate Illusion. In the International Zodiac Job System version, a number of new weapons are added, each with a letter at the end of their name, such as Blood Sword A and Masamune I. If the player is to collect all the new weapons, in order from the weakest to the strongest weapon, the letters spell out FINAL FANTASY.
Mewt creates an illusory version of Ivalice using a Gran Grimoire and a game referred to as Final Fantasy. Marche mentions that this Final Fantasy is a computer game, instead of any consoles that supports the real games (although this is technically correct, as by definition, all consoles are purpose-built computers). It is unknown which Final Fantasy installment they are referring to, although it is most likely the original Final Fantasy Tactics.
The final part of Inward Chaos is titled The Ultimate Fantasy. Additionally, the final blow of Chaos's Utter Chaos attack is called Brink of Delusion. Both are synonyms for "final fantasy". The words final fantasy are also repeated during the game's narration.
- "Beyond harmony and discord, ten warriors gather. The final fantasy is written here."
- —Shade Impulse
- "The ultimate chaos has almost been achieved. Everyone's role is set. The final fantasy begins..."
- —Shade Impulse 4-2
- "So let us set out. Now that you have been chosen to reign over the living world, we shall journey on the road that continues to the final fantasy..."
- —Cid of the Lufaine in the secret ending
In the Japanese version, when defeated, Exdeath references the Final Fantasy series by saying, "Is this my final fantasy?" In the English versions, this line is translated as, "Will I end like a mirage?"