For anyone who likes new improvements in strategy games, go take a look at simultaneous playing in Risk II. I went to take a look with Yin's advice in one of his posts, and I have to say that simultaneous turns is quite special ad involves more advanced (and lot more realistic) strategy. And I find it more fun too. It's worth the look. They also changed a few things in Risk, such as better worldmap. Maybe simultaneous turns could be great in Civ... IV