One Piece: Mezase! King of Berry is a single-player adventure, strategy, collectible card game in which players build decks and strategize to progress through the story. In this game, players follow the storyline from the first arc to the Baroque Works Saga, experiencing key events and battles from the anime. It stands out with its unique combination of card-battling mechanics, strategic deck building, and its faithful adaptation of the anime's humor and fantasy themes, offering an engaging experience for fans and strategy enthusiasts alike.