One Piece Kizuna Card Battle is a carddass game. It will be released on October 3, 2015, although people will be able to play it at select locations on September 19.
The player draws three cards from their deck and places one in each slot at their discretion. The two players then flip their cards over at the same time. Each player checks the number in the box on their card that corresponds with the spot they were placed on the field. The card with the higher number wins.
There are also "Kizuna Boosts" which can increase a card's points based on certain requirements. Cards can also get power-ups from having their pirate mark matched up with the card right next to them.