Battle of Giants: Dragons (Nintendo DS)

Long ago, war ravaged the mystical land of Tammabbukku when humans attacked the dragons, attempting to steal the beautiful gems from which they draw their power. Left weak and drained, the noble dragons withdrew into the far corners of the land, dividing the remaining gems by their elemental powers of air, earth, water, and fire. With the gems divided, a new battle has begun from within, and with it, the dark age begins.