So, the only game I've actually lost so far (back on King Difficulty) was with the Mongols. I'm now on Emperor difficulty, have handily won a few games on this difficulty, and I randomly got the Mongols again, and I think I'm going to lose this game.
How the hell do you use these guys?
All the extra free cities sounded awesome, but it never works out that way. They start at 1 population, and that means they don't have any production for the first however many turns of their existence it takes for them to grow. They tend to be positioned terribly (one of my cities will never have any production supplied from the landscape, period. Almost all food, with a tiny bit of trade). Barbarian cities are always on top of a resource, and now that they are my cities they don't get the resource. They rarely have any other resources in range either.
In the early game, especially at these higher difficulty levels, I'm just producing troops like crazy to defend my over extended empire. Since I don't get gold from the sacked barbarian cities (or troops, or tech, just the city), I have no money to rush anything (and no free settler to position a good city). I tend to generate WAY less trade than I do with any other empire, so I'm in last place in Tech (almost always in first, or at least the top two).
Anyway, anyone have good success with these guys yet? I can't imagine winning anything BUT a domination victory with them, and even that seems out of reach on these higher difficulty levels, due to my much slower tech than my opponents (and it probably doesn't help that I started next to the Aztec and Zulu, with China the tech-meisters in the game).