Rohan is a very good game to play.
There is a lot to do in it and i'm not going head on into detail.
Just search my thread on rohan japan Foreign korean section.
http://www.onrpg.com/boards/49898.html
The only problem it has is its a little hard to level the higher you go.
But, besides that, the graphics are cool and the gameplay out weighs the dull drums of higher leveling. you know you can stop leveling and do something else in the game see link.
Its a very enjoyable game and you'll have a lot of fun playing it.
I'm currently playing AOC
running through it seeing out the 30 days I paid for,
sadly its more hype than greatness.
I think for a 27 gig install, AOC has nothing on Rohan
which has better too simular gameplay definitely and more roamability, and it only has a 7 gig install.
Its free to boot!
So Play it