This game has a really special AI. I'd go so far as to say it's the best AI in any game offered by Matrix - yes, even better than the AI in the Airborne Assault series of games. That alone greatly improves replayability, and of course the card play makes things interesting too.
Hannibal is not the same as Steel Panthers. Very few games have such incredible replayability as that old classic. However, if you are interested in ancient warfare and enjoy playing against a very challenging (often brutal) AI opponent, buy Hannibal. It's an excellent wargame with no annoying micromanagement at all and it has rules that make sense. I bought it as soon as it came out and have been playing it ever since. Not every day, but quite regularly. Definitely worth the money.
I'm sure the developers will appreciate all the support they get. My hope is that Hannibal will be start of a great series of enjoyable and original wargames. Something different from the typical hex-based WW2 strategy.
"But here we are in a chamber pot, about to be ****ted upon."
-French General Auguste Ducrot before the Battle of Sedan, September 1870