It's broken beyond belief.
I don't have time for this. To repeat all that have been said by others would be pointless. I wouldn't even know where to begin anyway. Lets just say that other than a better user interface, there is simply nothing else to *enjoy*, with heavy emphasis on the word *enjoy*.
I will limit myself to point out the 2 most embarrassing aspects of this game: The absolutely and ridiculously broken A.I. and the frustrating magic flags.
Enough of my time wasted already. The bottom line is this: avoid at all cost and if you must get it, wait for the patch that make this a game that is actually playable. Creative assembly don't deserve your money right now.