Double Dragon

Developed originally by Technōs Japan, the franchise gained widespread international distribution through various ports and localized editions. The home computer market saw numerous adaptations, including the 1988 releases of Double Dragon (1988) and the specialized Double Dragon [Blue Label] (1988). These releases, alongside Double Dragon II: The Revenge (1988), brought the martial arts exploits of protagonists Billy and Jimmy Lee to platforms like the Commodore 64, ZX Spectrum, and Amiga.

The series also expanded through unique iterations such as Double Dragon II: The Revenge 128 (1982) and early computer ports like Double Dragon (1978), which adapted the arcade experience for early hardware limitations. The narrative typically centers on the brothers rescuing Marian from the Black Warriors gang in a post-apocalyptic setting. Later entries, including Double Dragon III: The Rosetta Stone (1982) and Double Dragon 3: The Rosetta Stone (1987), expanded the gameplay by introducing globe-trotting quests, new playable allies, and shop systems to purchase power-ups. These titles solidified the franchise's influence on side-scrolling design, establishing a blueprint for subsequent beat 'em up properties throughout the late 1980s and 1990s.