I played both demos -- Blue Dragon and Eternal Sonata. While Blue Dragon looks kind of cool, I found it rather tedious personally and wouldn't give the game higher than a 7 based solely on the demo. I played the Eternal Sonata demo and liked it better... I'd probably give it an 8 or so. The co-op feature adds a bit to the game and I like the way the battle process is "real time" and "turn based" at the same time. It's definitely a neat way of doing things.