One Piece Pirate Warriors 2 is a side-scrolling action game developed by Tecmo Koei and Bandai Namco Games. The game is based on the One Piece franchise, which follows the adventures of Monkey D. Luffy and his crew, the Straw Hat Pirates, as they search for the ultimate treasure known as One Piece. The game features a wide range of characters from the series, including Luffy, Roronoa Zoro, and Boa Hancock, each with their unique abilities and playstyles.