Is the AI not implemented yet?
The reason I ask is because I have now played 3 different games with large map, multiple continents and the AI does nothing. I've seen a few civilizations now and they have just one city, don't expand further and their units just keep traveling around the city area that's it. I saw two civilizations that had groups of 4 pioneers who just sat there and did nothing. They never try to found other cities. They don't produce any soldiers and have not gone farther than getting to a lvl 2 town. There is enough food plots near them but they also don't build on them so perhaps they aren't doing any research?