Sonic Chronicles: The Dark Brotherhood is different from any previous Sonic effort for the DS. Rather than being a straight up platformer like the Sonic Rush games, Chronicles focuses on a more traditional role-playing style. A new enemy has emerged in Sonic's world, and it's up to the blue hedgehog and his allies to band together as a battle party and put it out of business. Could Dr. Robotnik be behind it, or is there another force responsible for the forming of the Dark Brotherhood? You'll have to play to find out.