Double Dragon 1989 By: Taito

Overview:

It's classic Double Dragon action for your portable system. As always, you get to watch helplessly while your girlfriend is kidnapped, then (after a boost of liquid courage?) you go after the bad guys with all your street-fighting skill, and grim determination. Making the world safe for martial artists' girlfriends, one gang at a time...
Essentially the same game as the NES version, but with no color and somewhat simplified graphics, and shorter levels. And in this version you don't have to earn your move list by defeating enemies.