Double Dragon (??? Daburu Doragon - So Setsu Ryu) is a beat 'em up video game series originally developed and published by Technos Japan. It began with the release of the arcade game Double Dragon in 1987. The series features twin martial artists Billy and Jimmy Lee as they fight against various adversaries and rivals. The original Double Dragon was a hit arcade video game ushering in a "Golden Age" for the beat 'em up genre resulting in a flood of beat 'em ups during the late 1980s to 1990s that followed the conventions set by Double Dragon. A 1993 animated series and 1994 live-action film adaptation were produced; these adaptations were widely-panned by critics and audiences.