Well played to around 300 BC ... still in the bronze age and no where near Iron. Most of the other AI players are behind me in tech. My view is that tech is too slow in terms of the passage of time in game. Just my view.
Other thing I noted is that the Barbarians are cleaning the clock of most civs, mine included (Rome). I've watched the English use 6 units against 1 barb and lose. I have never won a defensive battle no matter what the terrain or the city defenses. Everyone is bankrupt and generally unable to stop the barbarians. This may be intentional and if so fine, but tends to get old after losing 10+ units and all your wealth a couple times. May be bad luck but all AIs are having the same level of bad luck. May want to rethink the amount of damage the barb units take or other factors.
Other thing I noted is that the Barbarians are cleaning the clock of most civs, mine included (Rome). I've watched the English use 6 units against 1 barb and lose. I have never won a defensive battle no matter what the terrain or the city defenses. Everyone is bankrupt and generally unable to stop the barbarians. This may be intentional and if so fine, but tends to get old after losing 10+ units and all your wealth a couple times. May be bad luck but all AIs are having the same level of bad luck. May want to rethink the amount of damage the barb units take or other factors.