High Seas Havoc, known in Japan as Captain Lang (キャプテン ラング Kyaputen Rangu?) and in Europe as Capt'n Havoc, is a video game that was made for the Sega Mega Drive/Genesis by Data East. The story is about an anthropomorphic pirate seal named Havoc (Lang in the Japanese version), his young sidekick Tide (Land in the Japanese version), a girl named Bridget, and an evil pirate named Bernardo. Bernardo is looking for Emeralda, a gem with powers that can cause whole armies to be toppled. A map shows where Emeralda is located, and Bernardo is looking for the map. Havoc and Tide discover Bridget unconscious at a beach. When she wakes up in a dwelling, she instructs Havoc to keep her and the map safe. Havoc hides the map in a cliff. After Bernardo's henchmen kidnaps Bridget and Tide; Havoc, the playable character, sets off to rescue them.