God, this was the game in which if anything could go wrong it did.
Heres my rather sparse 500AD map:
As usual I was aiming for space. I explored a couple of turns before settling and ended up in the SW corner of the land to get the two fish. I'm not wasting ANY food resources on an arid map! 2nd city Osaka was founded to pick up the gold, and Tokyo down south, basically because at that stage I judged all the viable northern sites to be too far away from the capital.
My first inkling of what to come was a misjudged forest chop in Osaka, which needed culture to bring the gold into my borders. So Osaka started on a granary while I researched mysticism. Id beautifully timed my forest chop to come in straight after mysticism to give me a fast obelisk, but of course forgot to change my build and saw the chop uselessly go on the granary.
Next came the exploration fiasco. I sent a workboat around our island, saw the other land to the north, and judged from the lack of AI units there when my workboat passed that it was probably empty, and that therefore (a) there was no point exploring it now, it would be guaranteed to be my land when I was ready to settle it and I had free units to explore with, and (b) that I would need optics before I could meet any other civs. Thus, my entire exploration and tech strategy went off hopelessly on the wrong foot. Until many, many turns later, my settler arrived by the marble to found Satsuma, only to discover that my northern cows had already fallen to Mongol culture. Ooops!
This of course called for plan B:
War, especially after I send a chariot to explore Mongolia and discovered his land was miles better than mine! Bloody evil Ainwood

But therein lay another problem. I had no copper or iron, having long since concluded that the sources on our island were all too far from any food to be worth settling (especially when I hadn't been expecting any wars). On a quick reassessment I still didnt fancy settling any of them and decided instead on plan C: beelining for construction and invading Mongolia with catapults and chariots (Its worked very nicely in some previous GOTMs). So after some quick building, my initial force of 4 catapults, 1 archer and 1 chariot arrived outside the gates of the very lightly defended Cimmerian and started bombarding its defences.
Two turns later, Genghiss large stack of swords, axes and spears showed up and instantly took out a catapult and the chariot. I did a quick mental assessment of his stacks strength and my likelihood of being able to capture and hold Cimmerian and
next turn all surviving members of my invasion force were back on galleys headed home.
OK, lets move to plan D. Ummm, what is plan D? Lets have another quick reassessment of the copper/iron sources. Nope, now that my other cities have eaten all the food, theres no way to settle any copper or iron without damaging my long-term economy with a long-term useless city. So instead I decided to get culture in Osaka and wait till it hits 750 culture, at which point it'll take the copper into its borders. So thats where Im at in 500AD. Still not off the starting island, and waiting, 3 turns away from being able to start hooking up copper. Im just glad this is only a prince level game.