I did the Game of the Month (as Byzantine with Dramatic ages). Classical I was dark as was one of my neighbours, recovering from that and warring to take him worked very well, he was sufficiently weakened by the loss of a city and the redirection of troops to try take it I was able to sweep him. The free cities getting 2 highest available units is very powerful Medieval I was gold, and all other Civilizations were Dark. It completely crippled them, they spent most of the era recovering their lost cities (some never did recover as my armies went on a tour... but that is another story). I easily pulled up to and passed them. Renaissance all were golden, but my lead was so well established that I swept them away before they could make use of their new age. I've no idea if AI Civ's make use of the gold/dark policy cards.