Double Dragon is a beat ’em up video game series initially developed by Techn?s Japan and released as an arcade game 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 blockbuster hit arcade 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. Due to the popularity of the game series, a 1993 animated series and 1994 live-action film adaptation were produced; these adaptations were widely-panned by critics and audiences. Gameplay: The gameplay in most of the games takes place in a pseudo 3D perspective like in Renegade and later beat-’em-ups, in which the player character can move in four directions but are always facing left or right. The player can perform a variety of unarmed fighting techniques against their enemies, as well use melee weapons such as baseball bats and throwing knives normally obtained from enemies. In some installments, there are techniques that can be done in combination with another player.