Phantasy Star Online

Hidden Artwork:
To access the hidden artwork, insert the Phantasy Star CD into your PC CD-ROM and go to the Extras directory.
Inside the folder you will find various images.

Unlock Hard and Very Hard Mode:
Finish the single-player version of the game (offline version) and you will unlock Hard and Very Hard mode.
You will get more XP and better items playing the game in these modes.

Hidden costumes:
The following passwords are entered into the "charatcter name" field to unlock two hidden costumes for that character.

Fomarl:    DNEAOHUHEK
Fonewearl: XSYGSSHEOH
Fonewm:    ASUEBHEBUI
Hucast:    RUUHANGBRT
Humar:     KSKAUDONSU
Hunewearl: MOEUEOSRHUN
Racaseal:  NUDNAFJOOH
Racast:    MEIAUGHYSN
Ramar:     SOUDEGMKSG