Under Jolly Roger is the third studio album by Running Wild. This album marked a stylistic turning point in which the group dropped the Satanic imagery they had previously used and adopted the pirate theme they would become known for, creating and influencing the later named Pirate metal subgenre of heavy metal in the 2000s in the process. The album's title comes from the famous Jolly Roger, the flag used by pirates to identify their ships. The album has sold over 1.6 million copies worldwide.