Double Dragon II is a side-scrolling beat-em-up released for the Game Boy in 1991 developed by Technōs Japan and published by Acclaim in North America and Europe. Although it is the second Double Dragon game released for the Game Boy, it is unrelated to the arcade and NES game Double Dragon II: The Revenge. The game is a localization of the 1990 Japanese Game Boy game Nekketsu Kōha Kunio-kun: Bangai Rantō Hen (熱血硬派くにおくん 番外乱闘編, "Hot Blooded Tough Guy Kunio: The Further Brawls), which was part of Technōs Japan's Kunio series. The graphics, music, and storyline were changed for the English version of the game.