This is useful when you are trying to obtain the Excalibur 2, as the clock is always ticking.
Reach the terrace in Memoria in under 12 hours (total game hours, you don't have to do it in one go), and a boss should be there. Defeat Lich and check the second pillar from the right. A ! should appear over Zidanes head if the game is still under 12 hours. Press X and you will find Steiner's most powerful weapon! Using the Skip FMV Sequences cheat will help you to do this.
Either: during Vivi's ATE "How He Ended Up Here", choose not to go home or choose not to watch ATE "How He Ended Up Here" (and do not choose any of the other ATEs on the list).
Then the ATE "Hippo's Prize" appears; choose to watch it and you will play against Mario of the Slums in the second round of the card tournament and he will use the Namingway card, but watch out! because it is a good card and you may want to save your game first!
There are a total of 3 cracks, and 4 areas with bubbles on the world map. Also, there are places where you have to dig into a crack to get in, ie. Mognet Central and Chocobo's Paradise.
On Disc 4, use Choco's SEA ability to head to where the Shimmering Island once stood. There are no bubbles on the sea as a guide, so keep moving until Choco is positioned exactly on the dot where "Shimmering Island" is still indicated on the World Map (when you press the SELECT button). The area in which you can find the treasure is much smaller than the dot indicates, so you might have to try many times. When you use a Dead Pepper, Choco uncovers the greatest cache of them all! This stash includes Zidane's Ultima Weapon, the strong Maximillian armour, and the ultra-rare Invincible Card!