dual blades is a fighting video game published by metro3d, inc. for the game boy advance. it is a fighting game with single player and player versus player modes. it features a "power combining system" which was very new for the genre at that time. this system allows players to create their own fighting style. characters include ninjas, knights, and american adventurers, an ottoman warrior named efe and nagasapa, an innocent-looking old lady who is in fact a khazak sorceress.