One Piece: Grand Battle is a great game, and Grand Adventure kind of continues the tradition. I say kind of because most of the stuff featured in the sequel is in the original game, with the exception of some interesting new characters and a decent (yet repetitive) Adventure mode. Those who already own Battle won't be motivated to drive to the store just to drop $40 on a couple of additional features. However, if you don't own a One Piece game yet, Grand Adventure is a safe investment.