I dont know how many of you guys have played the total war games but a single player demo is out now for the newest game Rome Total war.
If you've never played the other 2 games:Shogun,Medievil TW
Basically the game features large 3d battles featuring thousands of units on screen at the same time.
Here's a link for official site:
www.totalwar.com
Link for demo:
http://www.3dgamers.com/games/rome/#filelist