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The Experiment is a boss from Final Fantasy X-2 fought in the Djose Temple in Chapter 5. Its stats depend on the assembly pieces dug up from Bikanel as part of the excavation minigame.


Level 1

Level 2

Level 3

Level 4

Level 5


The Experiment is no threat until it hits its maximum level, at which point it can use its powerful Annihilator ability, which can be learned as Blue Bullet. After being defeated once, it can be fought again by using a repair manual. When the player runs out of repair manuals, it cannot be fought again.


Having Protect up at the start of the battle mitigates the damage the boss can deal. Carrying Mega-Potions, and focusing around using Power Break (in the European version, it is immune) and Armor Break will go a long way.

One way to instantly defeat the Experiment is to use a Thief with the First Strike ability at critical HP, and equip her with a Cat Nip.

How to level up the Experiment[]

To get an Episode Complete for Djose, the player must first defeat the Experiment at any level below its maximum level, and then, after using a repair manual, defeat it a second time when all three of its stats (Defense, Attack, and Special) have reached level 5. To increase these stats, the player has to dig up the corresponding assembly pieces in the Bikanel Desert.

If the Experiment is defeated before it reaches Level 5 in all of its stats, the player must give the Al Bhed a repair manual to fix it. There are only five repair manuals, meaning the Experiment can be fought up to six times. If, after all the repair manuals are used, the Experiment is defeated again before it is upgraded to level 5 in all of its stats, the player misses the Episode Complete for this area. Similarly, if the player has dug up too many assembly pieces before fighting Experiment for the first time, it will already be at level 5, meaning they will miss the chance to fight it at a lower level, making them unable to get an Episode Complete as well.

Each assembly piece has a type: Z, S, or A. Each type is worth a different amount of points tallied to the corresponding Experiment's stat.

Assembly Type Point Value
Z 5
S 3
A 1

Example: Yuna has collected 1 Attack Assembly Z, 3 Attack Assembly S, and 1 Attack Assembly A. She has added 15 points to the Experiment's Attack stat.

The Experiment's level in each area will change as the assembly pieces are collected. To check their progress, the player can either check the panel in Djose Temple (the panel where one applies for raises) to see how many of each type of assembly piece they have collected, or they can ask the Al Bhed with the Experiment (the Experiment has to be repaired first).

Level Points Needed
Level 1 0-3 Points
Level 2 4-9 Points
Level 3 10-19 Points
Level 4 20-37 Points
Level 5 38 or more

Other appearances[]

Final Fantasy Record Keeper[]

FFRK Experiment FFX-2.png
Baknamy FFTA2.pngThis section about an enemy in Final Fantasy Record Keeper is empty or needs to be expanded. You can help the Final Fantasy Wiki by expanding it.


Related enemies[]

Final Fantasy X[]

Final Fantasy X-2: Last Mission[]

  • Assault Machina
  • Guard Machina
  • Machina Hunter
  • Machina Ranger
  • Machina Soldier
  • Pop Fry
  • Scout Machina