I've owned Civ 3, all expansions and now Civ IV. I like IV alot - and even better with the first expansion so I'll probably buy the second as well. Now that I think about it, I did try multiplayer with 2 guys from my sim racing group and it was OK. You can set it for a maximum time per turn so it moves along pretty well and you can save the game, pick up later, etc. If someone is disconnected, the AI takes over that person until they reconnect or you can pause/stop the game. It worked pretty well - the hardest part getting the same people together at the same time to complete the game.