Last year, Bandai Namco revealed a One Piece game for smartphones, titled One Piece: Treasure Cruise, and the game is now available in the West. (Thanks, Anime News Network)
One Piece: Treasure Cruise uses tapping controls and utilizes tap-timing to form combos. Additionally, each character in the game has their own special abilities. If you can chain together attacks with certain characters in a specific order, it results in a Tandem Attack that deals a large amount of damage to enemies.