I am extremely non-aggressive and end up not getting any, or very few, leaders. I try and run a science game. Basically, my building priorities run happiness (and hence culture), science, money, though the latter two are linked (more money means more science, too) and I tend to go back and forth on whether to build a bank or university first, depending on the terrain around the city. If it is by a river, for example, I’ll build the trade improvements first.
I expand pretty aggressively and into areas that are likely to nab me resources. Usually I try to form a circle around things like deserts and jungles rather than hoping to fill them in and catch something. This way I can keep the number of cities down while still stopping the AI from nabbing territory that might grant them resources.
If you understand how corruption works (and there are some excellent resources on the web explaining it) this really helps in terms of how to build your empire. Knowing the Optimal City Number also helps you know how you should grow… once you exceed this number, corruption becomes a huge nusiance. The Forbidden Palace is necessary, but if you wait too long to build it you’ll probably not get it built without a leader. Big deal if you’re aggressive, but for me I can’t count on leaders since barbarians don’t create them, and I’m usually advanced enough to keep the AI off my back.
Wonders: I shoot for the Pyramids, but on higher difficulty levels this is pretty much impossible since the AI’s production bonuses enable them to build it really quickly. So I shoot for the Collosus which lasts a loooong time (flight). JS Bach’s Cathedral and Michaelangelo’s Chapel are musts for me, because I try to keep luxury rates at 10% or even 0 if I can manage it, and these wonders help that a lot. Add to this the science wonders like Newton and Copernicus. This keeps me busy. Let them have the other wonders. Even the Great Library isn’t so great in this; by the time anyone builds it I’m one or two steps away from Education which renders it obsolete anyway. It is good for culture, though, no question.
General strategies:
– Wealth is useless. Better to build a unit and disband it in a city than to earn money to hurry production.
– Planting and chopping forests is great for free shields towards anything but wonders, though in later patches they reduced your ability to do this some. On early versions you could just stack a bunch of workers and plant and chop a few forests each turn. Still, ten shields never hurts. Give your workers something to do: you’re paying for them.
– Pay attention to corruption. After a certain point, you’ll not be able to eliminate it at all. These furthest cities will only ever produce one shield and one gold. Don’t bother with courthouses or police stations, nothing but a small wonder will help these. Just build them some temples and cathedrals and forget it. Marketplaces help if you have access to a lot of luxury resources, too, but otherwise don’t bother. Corruption depends on three things. 1) Distance “as the crow flies” to Palace/Forbidden Palace, 2) the total number of cities in your empire, and 3) the number of cities closer to the P/FP than this city.
– If you plan to utilize culture or science at all on your own, I rush to learn literature first and rely on goody huts for filling in some of the other stuff in the meantime. Then I head for construction, then the republic.
– DO NOT GIVE UP YOUR MAP. If you can possibly help it, do everything you can to get the AI’s map without giving up your own, and get their world map, not their territory map. Giving the AI your map is pretty much begging them to develop in territory you probably plan to grow into yourself. Hold them off as long as you can.
– Buy tech. The AI trades with other AI civs a lot, so they tend to be pretty balanced technology-wise and will shut you out if you don’t do the same. Luxury resources and gold will help you. I’d advise against giving them techs if you can help it, they’ll only build the wonders you thought you’d have first because of the lead in technology. That lead disappears pretty quickly when you give tech up.
– Avoid early irrigation of grasslands (you can irrigate plains, though). It is a waste of a worker’s turn since, under despotism, irrigation won’t grant you any additional food anyway.
– Finally: micromanage. Automating anything sucks. Workers will not properly utilize the land, and what you want any city to build can change from turn to turn depending on the situation. If you can’t grow past 6 yet, build a settler or worker when the city is at or near 6. Same thing when you hit the 12 ceiling.
I’ve had the best luck with industrious civs. I usually go industrious/religious or industrious/commercial, but America for some reason does really well for me, too. Might be that the early goody huts really make a difference for expansionist civs. Either way, I don’t preserve random seed and cheat my way to good goody huts anyway. If the AI is going to cheat, so will I. 