so the latest IGN preview had some very interesting information about ciV's AI system: Spoiler : having four different AI sub-systems per each AI player seems a brilliant solution to me. it has potential for many varying levels of difficulty, and more unpredictability than previous civ games. i wonder if you will be able to adjust the difficulty on each AI individually, even if just through a mod. it could be very interesting to have an AI with a brilliant strategic AI that is great at building a solid stable empire that is an economic and technological powerhouse, but the tactical AI is dumb as a box of rocks . i think people interested in peaceful games would be interested in that. you could also make one with an incompetent operational AI that always picks the wrong battles to fight, and rarely gives the tactical AI the forces it needs, but the tactical AI is a genius and manages to pull victory from the jaws of defeat. i dunno, could be an interesting element to modding.