This is sadly a very poor game. The idea of it being "made" by The History Channel drew me to look further into it, but please don't make the same mistake. This is really just an old PC real-time strategy game (that wasn't so good back then) changed to appear like a History Channel documentary.
The History Channel parts are good, but they are few and far between. The battles in the game in reality have very little historical relevence. Parents hoping to buy this game as an educational tool steer clear.
Play.com also sell History Channel DVDs, as well as the PC game "Rome: Total War". Altogether, these will provide far more entertainment and have a much higher educational value than this trash.