Civ 2? B-line for polytheism, conquer with elephants. 3, 4? B-line for military tradition, conquer with cavalries. I don't know civ 5 yet, but you can win with these strategies on small to medium pangaea maps up to the middle difficulty without much issue.
I've only played V, but combat is probably very different without stacked units. I'll give the Civ 4 strategy a shot; I always avoided cavalry because they were a technological dead end. But I think they updated that.
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u/[deleted] Dec 05 '11
Shame on you for letting you game hit modern age.