Me and my brother have both been avid Civ players for over 20 years, we've played every iteration since 1. We have a running argument about which is the best version. I'm a big fan of 2, 3 and 5 as these are either nostalgic (2, 3) or I've played it the most (5). Here's the thing. He maintains that 4 is the best, as do many people on the forums. Admittedly, 4 is the one i've played the least, and I actually bought it a few days ago to have another go after a particularly heated Civ debate with my brother, but I still don't get it!!! For me it's ok, but I don't find anything special about it. I know lots of people prefer the AI, but again, there's nithing fantastic about it. Why does he, and lots of forum goers rate it so highly? What am I missing?