One Piece - Unlimited Cruise SP (ワンピース - アンリミテッドクルーズSP) is a Japan-exclusive video game for the Nintendo 3DS console. It is based on the popular One Piece anime and manga series and is the fourth installment in the Unlimited Cruise series. The game features an open world environment and allows players to explore the Grand Line and take part in various activities. Players can also battle against characters from the series, as well as take part in story-based missions. The game also features a wide variety of customization options, allowing players to customize their characters and ships. The game also features a wide variety of minigames, such as fishing, treasure hunting, and cooking. One Piece - Unlimited Cruise SP is a great game for fans of the series, as well as those looking for a fun and engaging experience.