Unlock password screen and random cards
Play in Zatch's Story Mode. You have to fight with Kido/Doctor Riddles.
After beated him, jump back to the Main Menu. You should see the unlocked
Password Screen. Type here this code: UCKAHEIT
This will unlock 20 random cards. Note: You can use this code only once
Unlockable characters:
To unlock 4 Mamodo teams, you have to buy cards in the Bonus mode:
Unlock Laila / Albert - Buy all Event cards
Unlock Laila / Albert (waking) - Buy every card in all four categories
Unlock Milordo-Z / Koko - Buy all Spell cards
Unlock Victoream / Mohawk Ace - Buy all Mamodo cards
Unlock new levels and characters:
Buy cards in Omega mode. By obtaining certain cards will unlock new
stages and secret characters
Card - Unlockable
Get the Red Card no.37 "Vamoon" - Castle level
Get the Red Card no.35 "Tsuaoron" - China Temple level
Get the Yellow Card no.138 "Mikoruo ma Zegaruga" - Dr Nazonazo's level
Get the Red Card no.36 "Belgim E O" - Egyptian level
Get the Red Card no.72 "Umagon" - Forest level
Get the Red Card no.59 "Victoreem" - London level
Get the Red Card no.38 "Demoruto" - Moon Tower level
Get the Yellow Card no.172 "Baberuga Gurabidon" - River Side level
Get the Green Card no.318 "Saigo no Kissu (Last Kiss)" - Unlock Alternate
Reira/Arubeiru as a playable character
Get the Red Card no.66 "Brago VS Zofis" - Unlock Zofis/Coco as a playable
character
Unlock Maestro
If you win 300 times in Time Attack mode, the Maestro will challenge you.
Defeat Maestro to unlock him as a playable character.
(2 victories over a single opponent is counted as 1 win)
Unlock Zeon/Deufo as playable character:
Finishing Zeon's Story Mode (Level35-43)
Play as Zeno and Dufort:
Press Up, Up, Down, Down, Left, Right, Left, Right, Circle, X at the
title screen
Play as Zeno and Dufort in story mode:
Press Up, Up, Down, Down, Right, Left, Right, X, Circle at the
title screen