I'm in the middle of a game and I've started to wonder about the meaning of this repeated playing. I don't mean that this game is boring me but that it's not challenging as it used to be. From the day when I've learned the city spamming tactic almost all games of Civ has waned in their re-playability value. Giving that it seems that except for extremely unlucky situations, using a combination of an aggressive and expansive tactics ensure victory, no matter what. The only Civs that pose threat are those that use this tactic themselves. I know that what I've written was obvious but when I read that some players don't even try to play at Prince level or higher, even after 20 years from original release, then maybe it's worth summarizing. So, how to keep this game interesting and challenging? Drop random maps and only use an EARTH map. Have you tried to play with every civilization? Some are harder then others. While both American Civs have plenty of space for undisturbed development, others are constantly attacked by their neighbours. Not until recently, I was able to survive as Greece. It seemed almost impossible to expand when after building second unit you get blocked by Stalin and Gengis Khan. Please, write your list of countries that you consider hardest and explain why. Propose your tactics how to overcome difficulties. Also, you can add other proposals challenges. Somehow I've came to the conclusion that I've beaten the game. It's a terrifying perspective.