I could've finished the game much earlier than my domination victory at 1570, but I had a hell of a time against a weird bug. I had finished taken over all the French cities, and yet somehow the AI still think France existed. I had to hell of a time keeping the French people happy and even had a city switch back to France even tho there are no France left!!!
berserks01, it sounds like France had boat people somewhere out there.
I expect most participants will opt for early Middle Age domination/conquest victories, so I'm probably going to be one of the few who even
reach the Industral Age, let alone the Modern.
I didn't take careful notes while I played, so this writeup was mostly reconstructed from analyzing my old saves with CivAssist.
Here's my Ancient Age post. As the Ancient Age ends in my game, I was bringing to an end a Pyrrhic victory over Greece at the dawn of the Middle Ages. I missed out on all the ancient Wonders except the Colossus, but the Athenians had left me the Great Library when Babylonian bowmen and swordsmen came marching in.
The world was so densely settled by this time that I never saw any barbarians past the Ancient Age, not even the random marauding galleys that prowl the coasts around cities.
New York, a city that was very poorly placed by the Americans and flipped to the Greeks, was razed in 470 AD, leaving the Greeks one tundra-bound retreat in Pharsalos. Uruk was refounded on the ruins of New York in 540 AD. In 570 AD Pharsalos is taken. Exit Greece, stage left. Alexander's head is put on display on the end of a newfangled defensive weapon the soldiers called a "pike".
Babylon has won her first war and gained the living space she has so desperately longed for, but the war has left the nation stunted. Our Golden Age was squandered in despotism, and all the AIs went to Republics early. Babylon couldn't follow suit until Greece was destroyed as the war weariness would have been crippling without infrastructure. But while we've been building swordsmen and spearmen to smash against Greek hoplites, the AIs have been building cities, culture, farms, roads, and wonders. Babylon's new lands are large in area, but lacking in all of those things. The Middle Ages are a battle for commerce, culture, and production. We have a lot of work to do to catch up.
After the war ends, Babylon undergoes a revolt and emerges a Republic. It's shaky going at first without military support for happiness, but some of the unhappy citizens were rounded up into worker bands and sent to till the fields for a thousand years, and when cathedrals and marketplaces go up soon after, the unrest subsides.
I squeezed in a few more cities as the culture boundaries of France and India started to clash with mine. Eridu is founded in 670 AD on the far tip of the north peninsula. Samarra is founded in 830 in a culture gap near Pharsalos; Lagash is founded in 870 north-northeast of Athens and west of Cornith to plug another culture gap. By 930 AD the entire continent had been carved up by the six civilizations on it.
The Forbidden Palace had been commissioned in Athens in 610 AD, just after the Greek War, but was not completed until 870 AD, thanks to not getting a leader because my units died too fast to get many elite victories. The mainland empire immediately surges in productivity when it is at last complete.
In 1070, Babylon builds Sun Tzu's in the capital to keep anyone else from getting it.

, I know.
Washington finishes Leonardo's in 1150, setting off a instant wonder cascade. France gets Copernicus's Observatory in Paris and Babylon unveils the Sistine Chapel in Sparta. I'm about 3/5 of the way of the way through the MA tech tree at this point, having just finished Chemistry and aiming for Military Tradition.
Caravels sent out to explore the seas finally find the lost-lost Iroquois around the year 1170, on an isolated island continent far to the northwest of our homeland. The Iroquois had built the Oracle so I knew they were out there. They were a backward people, as expected after over 5000 years of isolation. But they control all the wine and gems in the world. Literally.
There are several tiles with wines on the Iroquois homeland, and a single source of gems on a mountain on their lands. They would generously trade their wines (at first) but would not part with these gems for any price. With the fact that there are
no silks anywhere in the whole wide world, this means no other civilization could secure more than six luxuries for their people.
Maybe it was a blunder to let slip any contacts with the Iroquois to the outside world. Should have kept him isolated to keep him stupid as long as possible, but another AI would have found him eventually, and then
they'd have the contact to barter with. Contact was passed around in short order, and soon Hiawatha was wheeling and dealing with the whole world. I surmise he put his wine monopoly to good use and traded it for techs, as he soon started catching up in the tech race surprisingly fast.
Knowledge of the world beyond the main continent spread fast as a result. France put a fishing village on a half-hill-half-mountain island with iron north of Eridu, and further north of that lay the last bit of unclaimed dirt on the planet, a half-frozen little island far removed from everyone else. Any city put up there would be corrupt to the point of uselessness, so Babylon didn't bother to stake a claim. But the AI is wont to settle every last square inch of land, even if it means sending a settler halfway around the world to put a fishing village in a inhospitable wasteland at the ends of the earth, and so the AIs would all set out to colonize this final frontier as soon as they could reach it.
In 1355 France completes Magellan's Voyage and starts their Golden Age.
In 1380 the city of Babylon builds Newton's. This was the first wonder we'd completed before the AIs even got to start on it, as we're finally pulling ahead a bit in tech.
I reach the Industrial Age in 1395 AD, getting Nationalism as my free tech. France, India, and America all got there at practically the same time I did.

Spain is 3 techs from the IA, Korea and the Iroquois have over half the Middle Age tech tree unfinished.
Minimap at the end of the Middle Ages. It's not quite entirely uncovered, but there's no more land left to reveal at this point.
The Middle Age passed fairly uneventfully, but the Industrial Age will be plenty explosive enough. I'd built up over a dozen cavalry, ten spare riflemen (in addition to the 40 or so on city garrisons), and ten cannons, and I'm planning to invade France next. I had just gained a very narrow tech lead at this point, after trailing France for much of the game. The big three AIs are only one or two techs behind; Korea and the Iroquois are still backward. I need to move fast before the other civs get riflemen, or it's going to take artillery to crack AI cities open.
Read the epic conclusion!