Rocky X Hopper 2 is just like it's prequel, a party game. Consisting of 12 mini games. The stars of the game are two penguins, Rocky and Hopper who run a detective agency. One day they get hired by Pinky the penguin to search for her lost cat. Seeing a possibility to earn a quick buck, Brownie joins in the search. During their adventure, the cat is kidnapped by an evil scientist, which happens to be a poodle.