Xenosaga Episode 3: Also Sprach Zarathustra Cheats - PlayStation 2
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Swimsuit mode
Beat the game once to unlock Swimsuit mode in the Memory Code event viewer.
Shions "Vector" uniform
Have a Xenosaga episode II clear game data save on your memory card, And at the title screen of Xenosaga episode III, start a new game. And it lets you load up a Xenosaga episode II save file. Once you do that, Shion will have her "Vector" costume, for the new game.