Final Fantasy/The Crystal of Fire

Treasure: 10 Gil, 160 Gil, 180 Gil, 500 Gil, 575 Gil, 1455 Gil, 1455 Gil, 1520 Gil, 2000 Gil, 2750 Gil, 2750 Gil, 5000 Gil, 5454 Gil, 7340 Gil, 7900 Gil, 9500 Gil, 9500 Gil, 9900 Gil, 10000 Gil, 12350 Gil, Cottage x2, Tent, Gold Needle, Flame Sword, Shirt, Ice Armor, Ice Shield, Mythril Gloves, Healing Staff, Ice Brand, Steel Gloves, Gauntlets, Ruby Armlet, Rat's Tail

Cardia Islands
Take your new airship to the Cardia Islands and look in each hole for some treasure. After that, land on the islands with two holes and then enter the one on the right. Look around and you'll find your way to Bahamut, the king of the dragons.

Citadel of Trials
Take your airship to the northwest corner of the north-eastern continent. If you look around with your ship, you'll find a small river, go down it with your canoe, then walk south until you see a castle. Use a tent then enter.

Floor 1
Walk up and the old man blocking the path through the pillars will ask for the Crown (the one you got after defeating Astos). Once you show him the crown, he'll disappear, so continue up and enter the small throne room to the left. It's a dead end, right? Of course not. Sit on the throne and you'll get transported to the next floor.

Floor 2
This floor is pretty confusing. First, exit the room and enter the teleporter in the lower corner of the adjoining room. Next, enter each of the next three teleporters until you end up in another room with another teleporter and a door. Don't enter that teleporter, instead, exit the room, and enter the teleporter near the door in the corridor. In the next room, enter the teleporter on the right side of the room. After that, walk to the left, then up, but ignore all the teleporters for now. Instead, continue up and get the chest in the room in the corner. Now, walk down and enter the first teleporter you came across when you first warped to this area.

Floor 3
Go up and enter the room, then head to the right and grab the chests at the dead-end. Now, head all the way to the left, and follow the path around until you reach another group of chests, you'll find the Rat's Tail in one of them. After that, head towards the throne, but like almost every other important spot in this game, you'll run into another spiked square, with a fortunately easy sub-boss.

Dragon Zombie
I guess this guy can be considered a sub-boss, but he's really easy compared to the others. Warriors and Monks should attack, Red Mages should and Black Mages should use Fire2, and White Mages should use Dia2 and Cure2 when necessary. He'll go down for the count in one or two rounds.

Cardia Islands
Sit on the throne in front of you to get warped outside. Go back to Bahamut's Cave and talk to him to have your classes upgraded. You won't notice any immediate changes (besides your looks), but you can now equip better weapons and spells.

Chapter 8: The Crystal of Water >>