The game also has a password system. Input the correct 8-digit password and you will be given a card – however you must pay in star chips that you acquire during game play but each fight only gives you a maximum of 5 chips at a time and most of the cards that are effective to use require an insane amount of chips (eg all signature monsters, such as the Dark Magician, Red Eyes Black Dragon and Blue Eyes White Dragon cost the maximum amount of 999,999 chips!) Playing story mode, after you return form the real world, the game becomes suddenly and alarmingly difficult. The fields have been changed to suit the opponent, making their already strong cards nearly invincible!
So with weak cards, the inability to acquire stronger cards, and frustratingly powerful opponents, this game can become very annoying, very quickly and even though the card battles can be viewed in 3D, the fights become very boring, quickly – always watching the same animations.
If a decent Yu-Gi-Oh! game is what you seek, look to the GBA.