Yu-Gi-Oh! Monster Capsule GB

Yu-Gi-Oh! Monster Capsule GB 「遊戯王モンスターカプセルＧＢ」 is a video game for the Game Boy Color.

Monster Capsule GB has only been released in Japan. The game combines a modified version of Capsule Monster Chess with some short role-playing game-like segments.

In the game, Seto Kaiba possesses the Millennium Ring and is captured by its power while he was in a coma after "Death-T." Kaiba then invites Yugi Mutou and all of Yugi's friends to the mansion.

Once in the mansion, the ring uses its power to suck away the souls of Katsuya Jonouchi, Anzu Mazaki, Hiroto Honda, Ryo Bakura, and Sugoroku Mutou.

In order to get his friends and grandfather back, Yugi has to defeat Kaiba and his minions in "Monster Capsule" (MC).

As Yugi defeats various bosses, he gains his friends' souls back to use as allies. As with Volume 7 of the manga, the names of the pieces are "Joe", "Hiroto," "Anzu," and "Bakura."