I can tell otogi and otogi 2 were the reason why I bought a xbox ( I hated that machine to that date) these games are by far some of the most underrated games Ive ever seen.
the genre is hack n slash with a lot of rpg elements like powering up and a missions kinda style of levels. ok if I can recommend you one game you dont know it would be otogi 2.
perfect graphics, perfect soundtrack, perfect gameplay
here a lil glimpse
http://www.youtube.com/watch?v=LzEW2...eature=related
one of the most mesmorizing levels atmospheric till it bursts
http://www.youtube.com/watch?v=gF9kb...eature=related
even if the quality sucks you will get a glimpse of the most fun destruction you could ever play

you can trash every level ad even get rewards for it if you trash them more then 90%
http://www.youtube.com/watch?v=Zf3Mt...eature=related
the hardest battle in game history