Black Rocks are obstacles in Mario & Luigi: Superstar Saga. They are found throughout the Bean bean Kingdom, serving as hurdles for Mario and Luigi. They can only be obstructed by Ultra Hammers. Several Black Rocks obstruct the entrance to Joke's End, requiring these Ultra Hammers if the brothers proceed.
In Mario & Luigi: Superstar Saga + Bowser's Minions, they appear as light brown in color rocks instead.