I'm keen to play my first PBEM game soon. I was wondering a couple of things about PBEM v AI games. Firstly, what features are available in PBEM games that aren't in AI games (Action Cards)?? Secondly, do you find yourself playing in a similar way against human opponents or do you play differently? And thirdly, is playing by email self explanatory or is it like changing your race in a random game

Any info would be great!
Cheers