I've played 4 C3C games so far and each time I get the same AI civs. I play standard size with 7 AIs, all random. I've played as the Incans, Mayans, Byzantines, and Dutch. Each time my opponents (obviously except when I was playing as them) were the Incans, Mayans, Aztecs, Iroquios, Americans and some others (Chinese at least twice). Is there a reason for this? On the first screen, where you choose the world settings, the random seed is set to 0. I've never changed it. Is that the cause?