Official story and features:
"The story of Baten Kaitos takes place at a time when lands exist in the sky. It is an era in which the once-vast oceans have become mere legend among men. This is the world in which Kalas and Xelha meet: A world in crisis, where a conspiracy for power may lead to its destruction. Players will control a spirit that guides and advises Kalas throughout his journey and fights by his side. Over 1000 types of "Magnus" cards deliver an intense battle system combined with breathtaking graphics and a world overflowing with character detail. Enter Baten Kaitos on a journey to unlock the mystery of the lost sea in an enchanting story of friendship, betrayal, and prayer."
Story from Namco press release
"- Intense turn-based battle system: An intense and unconventional card-based RPG battle system with over 1000 types of "Magnus" cards (each with its own unique artwork) that can be combined.
- Capture essences in "Magnus Cards": Capture the essence of certain items and entrap them within blank magnus cards, then reproduce them during combat, healing, solving puzzles, and more. Magnus cards age through time: foods will ripen or rot, items will rust, gain or lose value with age.
- An epic journey with surprising twists: Experience shocking story development as you control a spirit that guides and advises Kalas throughout his journey. Enter a world overflowing with character detail, emotion, and expression.
- Breathtaking graphics. Players will be in awe of incredible graphics, including sub-worlds, towns, villages, cities, and even weather patterns bursting with amazing color and detail.
- Renowned production talent: 3D Character designs by Asami Fujita. Brilliant soothing soundtrack composed by Motoi Sakuraba."
Features from Namco press release