In the Gameboy Advance version of Final Fantasy 6, the Vanish-doom trick used to kill Intangir in the SNES and Playstation 1 will no longer work.However you can still kill Intangir, first go to Triangle Island and walk around until you encounter Intangir, once you're in the battle, cast the Confuse spell on the character you will use, then wait until your character gets hit with the Confuse spell, while the Confuse spell is cast, quickly go to the item menu and select the Smoke Bomb item.Due to a glitch in the game, Your character will be confused and will use the smoke bomb item on Intangir which will kill Intangir but, it will counter attack with Meteor.Use this trick to quickly earn 10 AP magic points for your characters magic spells early on in the World of Balance.
Defeat the 8 Dragons in the World of Ruin. This dungeon is located at North-West of the world map
At the end of the game, it is possible to duplication equipment en masse. Note that you must have this duplicated equipment on Terra. During the tiered, sequence battle at the end of the game, end each battle such that only Terra is alive. When the final battle starts, you'll find that there are two Terras in the fight. The equipment of this second Terra can be removed without affecting that of the first, although you must also unequip the first. (You only need to do the unequipping before the end: you can do this just before the battle's end if you know the final boss's HP and then estimate when he is near-dead and unequip then.)
This glitch can be used to reset a character's level in a given save file: however, note I say only "level". Only the character's level will reset, and all their other stats and anything about them - other than Level and EXP. - will be unaffected. This in turn makes it very possible to maximize a character's stats without intense optimization of Esper stat growth as you only need to continue leveling up. This is because leveling up is only based upon stat increments rather than pre-set statistics.
To begin this glitch, you must save and then quicksave your game. Return to the title screen and start a New Game and continue along it for a while. This length of time must be as long as it takes to recruit the character whose level you wish to reset on the originally-saved file, and you cannot save during this entire interval: thus, it is most practical to do this with early characters, such as Terra and Locke. Once the desired character joins the party, you now need to earn a Game Over. This will send you to the last time you saved (that is, the initial save), with the joined characters at the level they were at in the New Game file. However, only their level will be overwritten, making it possible to continue upgrading their level and further increasing their stats from the original stats pre-glitch.
To be able to use this glitch, Sabin must know the Blitz Mantra. You should have Sabin input the command sequence for Mantra and then, as soon as possible, have someone else Confuse him, preferably an ally for the sake of keeping the situation controlled. When Sabin does use his Blitz, it would, under most circumstances, be intended to heal the foe rather than the party because he is Confused; however, due to poor coding, it will actually deal damage to the foes: most importantly, if there is only one foe, for example, then 65,535 damage will be dealt (though it is shown as 9999). Otherwise, the damage calculation is as normal: Sabin's HP divided by the number of foes minus one, although the "one foe" instance causes a division by zero which forces maximum damage.