Apocalypse (ability)

Apocalypse (アポカリプス) is a recurring ability in the series, oftentimes being used by extremely powerful enemies, and is generally one of the strongest attacks or spells in the game.

Crisis Core -Final Fantasy VII-
Apocalypse is Zack's ultimate Limit Break in Crisis Core -Final Fantasy VII- obtained after the defeat of Genesis in Modeoheim. Zack begins to levitate high into the air while casting a giant seal on the floor of the battlefield under all enemies. He gathers energy in his hand and raises it above his head, casting powerful lightning across the battlefield, causing heavy damage to all enemies, eventually igniting the seal. The power of the attack varies depending on its level, and with 120 power at Level 5 is has the highest strength of all Zack's Limit Breaks:

Genesis is also capable of performing this attack, only using it in his final battle with Zack in the Banora Underground, after his Avatar Form was defeated. Genesis's version of the attack is performed opposite of Zack's; where Zack floats and casts the spell to smite those below, Genesis summons the seal above him to have it shower the attack onto Zack from above.

Final Fantasy VIII
Apocalypse Ce_mQ0z5hDU Apocalypse is a magical spell from Final Fantasy VIII. It is only available if it is drawn from the bottom half of Ultimecia's final form. It does massive non-elemental damage, approximately twice as much as Ultima. It does around 4,000+ minimum.

While in the main game it is impossible to draw Apocalypse before the final battle with Ultimecia (and therefore junction it), it is possible to junction it to stats if a Gameshark or other device is used to place a stock of it in a party member's magic. However, there are occurrences where it does not raise any stats at all, being given this spell was never meant to be available before the very final battle, and therefore would have never been junctioned.

Final Fantasy Tactics A2: Grimoire of the Rift
Apocalypse is an enemy ability, used by Neukhia, which inflicts Confusion on all units in a small area.

Vagrant Story
Apocalypse is an enemy ability used by the final form of Guildenstern, and by the optional boss Asura.

Dissidia Final Fantasy
Apocalypse is a HP attack for Ultimecia, tracking the opponent and exploding on them.

Trivia

 * All instances of Apocalypse feature a magical seal appearing. In Crisis Core, parts of the magic seal contain scriptures from the final act of LOVELESS, the poem that Genesis often reads and is obsessed with.
 * Genesis' usage of Apocalypse in Crisis Core is a reference to the Bible - Genesis marked the creation of the world, and the Apocalypse marks its end.