I love playing Civ IV! Danielle and I play it together over LAN, and it's great fun. But I will happily concede I'm useless on the medium to high difficulties. I think we're far too interested in exploring the world and building wonders to bother with challenging gameplay. I can't remember the ranks off the top of my head, but I think we use the third easiest one when playing on the same team. It's almost like cheating, but we don't care, because exploreexploreexplore! Once we have discovered the world and need to go to war, Danielle generally gets bored. I only get bored when I know that the rest of the world domination is nothing short of a formality.