Changes

In Campaign Mode, the player assumes the role of Yami Yugi as he competes in a Capsule Monsters tournament. However, both Yami and Yugi have no idea on how to play the game at the time. They meet Grandpa Muto at the his new Capsule Monster Shop, where he shows them how to make an element Symbol that represents them in the game and allows them to purchase as many monsters as they can with the MP they earned making the Symbol. He also learns the eight monsters types: Light > Dark > Earth > Thunder; Fire > Wood > Wind > Water. In other words, having monsters of a single type is VERY dangerous, making victory for enemies easier. The Symbol also affects the mosnters they control; for example, Dark monsters would be weakened by a Symbol with Light as its type.

Afterwards, Yami Yugi enters the first arena and defeats Joey easily. (He choose four [[Fire Reaper]]s for his monsters and choose a land map disadvantageous to them; it floods occcasionaly, making dry land hard to find). Before heading off for his next opponent, Yami Yugi is told by Joey that if he clears all four arenas, a "new path will appear or somethin like that".

In the second arena, Yami Yugi defeats [[Weevil Underwood]], [[Rex Raptor]], [[Mai Valentine]], [[Mako Tsunami]], and [[Mokuba Kaiba]]. Rex and Mokuba also have fields that can damage monsters; however, Mokuba's is type-specific. Mai proves the hardest to beat due to her strategic choice of monster types. After defeating Mokuba, Yami Yugi learns that Seto Kaiba is in the tournament as well, giving him something to look forward to.

Now having earned his way into the third arena, Yami Yugi faces [[Odion Ishtar]], [[Marik Ishtar]], [[Ryo Bakura]], [[Bandit Keith]] and [[Maximillion Pegasus]]. No real skill is needed for facing Bakura and ; Pegasus, Odion, Maril Marik and Keith prove the strongest of the players here. Bakura and Keith's fields are rather neutral, having no special transformations. Pegasus and Marik have fields with different type advantages. Interestingly, Odion is the only player to use Earth for his Symbol.

In arena four, Yami Yugi is shocked to find the possessed versions of [[Yami Marik|Marik]] and [[Yami Bakura|Bakura]] as opponents; each saw the match their other self had with Yami Yugi, so it's best to use new strategies. Other shocking news is that [[Shadi]] has taken part in the tournament along with [[Ishizu Ishtar]]. Finally, Yami Yugi comes face to face with [[Seto Kaiba]] and defeats him; interestinly, Kaiba only plays a single [[Blue Eyes White Dragon|Blue Eyes]]. Shadi's strategey focuses on confusing his opponent and keeping his pieces from being bunched together. Kaiba and Ishizu cautiously send out monsters, keeping a guard around their symbols. Against the Yamis, it's a (litterly) pretty straight forward match, but their fields each have a nasty surprise.

As soon as this area has been cleared, lightning will strike in the sky and the clouds will become dark purple; the music also changes to become more ominousominou. Two orbs of light will twirl out of the sky and enter the ground, causing a towering fortress to emerge with a large gem on top of it. Both Yugis realise this is the new path Joey had spoken about before, meaning that the strongest opponents of the Capsule Monster Tournament wait within it.