Has anyone played this all the way through? My friend just rented it (because he's a bit short on money) And had me come over and play it. How would one explain the battle system? (I mean, besides "cool".) Strangely, the game reminded me A LOT of golden sun. Why is that? ("well, they're both really cool games..") I mean besides that. Its gotten really good reviews too - check it out if you have a GC.