All Cards
Beat every duelist 20 times, then at the title screen press L, R, Select, A, B, Left, Right, Up, Down, Start
View the staff credits again.
To do this, you must have already viewed the staff credits at least once. To view the credits again, input the old famous Konami code by pressing Up, Up, Down, Down, Left, Right, Left, Right, B, A at the selection menu.
Unlock Boosters
To unlock these boosters, you must have ten wins against the specified duelist.
Blue Millennium Booster - Beat Rare Hunter ten times
Blue Premium Booster - Beat Yami Yugi twenty times
Blue/Green Millennium Booster - Beat Strings ten times
Dark Ruler Hades Booster - Beat Bandit Keith ten times
Gold Millennium Booster - Beat Odion ten times
Green Premium Booster - Beat Simon twenty times
Guardian Sphinx Booster - Beat Pegasus ten times
Jinzo Booster - Beat Weevil ten times
Orange Premium Booster - Beat Yami Marik twenty times
Pink Premium Booster - Beat Yami Bakura twenty times
Purple Millennium Booster - Beat Umbra and Lumis ten times
Purple Premium Booster - Beat the Duel Computer twenty times
Red Millennium Booster - Beat Arkana ten times
Relinquished Booster - Beat Rex Raptor ten times
The Masked Beast Booster - Beat Maku Tsunami ten times
Thousand-eyes Restrict Booster - Beat Bonz ten times
Toon Summoned Skull Booster - Beat Espa Roba ten times
Yamata Dragon Booster - Beat Joey Wheeler ten times
Zombrya the Dark Booster - Beat Mai Valentine ten times
