One Piece: Grand Battle! 2[a] is a Japan-exclusive fighting game for the PlayStation developed by Ganbarion and published by Bandai in 2002. It is the second game in the One Piece: Grand Battle! series and the seventh game to be based on the One Piecemanga and anime. Similar to the first game, this game uses the song "We Are!" from the One Pieceanime, but with different lyrics, which is known as "We Are! Super-EX ver.".
After Luffy and his crew make it to the grand line, they are faced by an organization of bounty hunters called Baroque Works. This game covers the Alabasta Saga.
Similar to the first game, two characters will duke it out in a 3D arena with items and obstacles. However, more characters, stages and features are added.
Another One Piece game was available with this game using the PocketStation portable device, it was a role-playing game taking place during the Alabasta arc with a new original character.