Mega Drive: Double DragonTwin brothers Billy and Jimmy Lee learned to fight before they could walk. Martial arts and street smarts carved them into the baddest fighting machines in the big city. But now Billy is faced with his greatest challenge to save his girlfriend Marian from the evil clutches of the mysterious Shadow Boss and the lethal gang of thugs known as the "Black Warriors": As a master Ninja you'll punch, head butt and high kick gutter slime into submission.