Blue Dragon Plus
A direct sequel to Blue Dragon, set a year after the events of the first game. The game uses a real-time strategy style, moving characters around a map with the stylus on the lower screen and fighting enemies when they are close enough to attack.
Story
From Wikia: "A year after the events of the original game, the world continues to embrace and explore the cube worlds created by the opening of the planet's core. One day, King Jibral and Zola encounter a mysterious evil dragon shadow on one of the cubes. Zola has a bad feeling about it and after informing Shu and the group, they are on another adventure to discover this new threat."