By way of a change, I have just played a couple of OCCs - using the classic approach, rather than choosing an OCC game. I play a "normal" game, but restrict myself to a single city. This means a number of national wonders and a few other buildings are not available and there is no possibility of a cultural victory. I had a relatively easy victory at settler and chieftan, but I suspect that things will become more difficult at Warlord. Money is not an issue but various buildings (particularly the religious ones) have less significance. I wonder what the highest level is at which a victory can be achieved and who is the best leader. Perhaps there are some tricks and techniques I should learn. Has anyone else tried this?