This is the situation at the dawn of Middle Ages: it's 710 BC, Japan is already gone and India is being assimilated. After the freebie pick, there's no point in keeping Greece alive anymore so i start a second front against them. Meanwhile, having lost the Great Lighthouse, i'm spending heavily on research and using part of my resources to build libraries, with the goal of reaching Astronomy as soon as possible.
India is gone in 490 BC and Greece follows suit three turns after. A good deal of elite units have been created, but no leader has emerged so far. In the meantime, Paris has completed the Pyramids. Excellent news, since Paris is my planned future capital.
Being still around 20 turns away from Astronomy, i decide to not have my troops getting lazy and invade Rome anyway with suicide galleys. After a few turns of preparation the fleet sails. During the capture of Rome, in 270 BC, the first leader finally comes and it is used to rush Sun Tzu in Rome. The weak Roman nation is out of the game by 170 BC. Meanwhile, Salamanca has completed the first Iroquois university and is now building Sistine as a prebuild for the Forbidden Palace.
In 130 BC Astronomy is known, a harbor is rushed in Rome and i can finally benefit of a few more luxuries.
Next target is France. Paris is heavily defended but my numbers are simply too big. In 10 BC i finally get the 2nd leader, just in time to not lose shields on the FP prebuild, and next turn Paris becomes the new Iroquois capital, around a RCP 5 ring, while Salamanca becomes the FP city. The sudden outcome boost is significant, by all means a second Golden Age. France is gone by 30 AD.
Now it's Germany's turn. Firstly, i donate them a small city on the northern Greek coast, then i proceed to take over their whole mainland. In 230 AD, when all it's left of Germany is that small town i donated them earlier, i sign peace and let them live for a while longer as OCC. The pattern repeats itself later with Russia (OCC in 460 AD) and Persia (OCC in 540 AD). At this point i'm well into the Industrials and fairly near the domination limit, so i'm basically done with conquest. It could have been faster but i've spent a fair deal of shields into libraries, markets, universities and a pair of wonders in an effort to not lose ground on the scientific run.
On the research front, after Astronomy i went for Navigation and Banking at a slower pace. After going for Monarchy and Chivalry, the AS researched Invention and Gunpowder. At that point, i went for Chemistry (immediately donated), Physics (immediately donated), Gravity and Magnetism. Korea was so kind to research Metallurgy for me so i could hit the Industrials in 400 AD. I could buy Steam and Medicine, and, later on, Nationalism, which i donated to everyone except for the OCCs in the hope of speeding up the path to Replaceable Parts (success) and have the AS research a second Industrial tech (fail).
The scarcity of leaders persisted through the whole game. Copernicus, Magellan and Evolution were all built by hand. The 3rd leader was spent into Newton's and the 4th and final one was kept spare until Electronics and then used for the Hoover Dam.
A few turns before the end of the IA, Babylon decided to surprise-attack me with a frightening force of one musketman and one bowman. Consider that not only i had IA defenders, but i was also donating Babylon several luxuries. Moreover, i tried to dissuade them by defending the target city (size 12) with infantry and artillery, but none of that worked. The bowman attacked anyway, and even if it was torn into pieces i had to enter the Modern Ages with one scientific AS less to count on. Even so, i managed to snag 3 of the 4 first-tier techs, the missing one being Rocketry. I took over all the three OCCs (useless at this point) then, with prebuilds already in place, i went for Miniaturization right away and after building both Seti and the Internet i could easily afford 4-turns research for the rest of the MA.
In the final turns of the game the Ottomans, completely useless since the AA, researched Sanitation, useful to milk the game a little bit more by building a few hospitals and creating some Metros. Then, it was England's turn to try a sneak-attack with a somewhat less laughable force of cavalry and infantry units, plus ironclads to harass my coast, so i could have a little extra fun with destroyers, bombers and radar artilleries before the spaceship was complete.
The final result is a Spaceship victory in 1260 AD, with 7673 Firaxis and 11692 Jasons. I ended the game 90 tiles below the Dom limit and with a population way above the threshold and kept 99% happy since ages, a factor that probably was the key to a final score higher than expected.
Here's the complete tech log:
4000bc: Ceremonial Burial, Pottery (prerequisites)
3900bc: Warrior Code (hut)
3750bc: Alphabet (trade, India)
2900bc: Bronze Working (hut)
2430bc: Writing (research); Mysticism (hut);
2070bc: Iron Working (trade, India);
1725bc: Map Making (research);
1600bc: Wheel (trade, Japan); Masonry (trade, India);
1475bc: Code of Laws (research);
1350bc: Philosophy (research);
1075bc: Mathematics (trade, Ottomans)
1025bc: Literature (trade, Greece)
_925bc: Horseback Riding (trade, Ottomans);
_900bc: Republic (research);
_710bc: Construction (research); Currency, Polytheism (trade, Persia);
_710bc: Engineering (trade, Persia); Monotheism (trade, Babylon); Feudalism (trade, Korea);
_510bc: Theology (research);
_330bc: Education (research);
_270bc: Monarchy, Chivalry (trade, England)
_130bc: Astronomy (research);
__10bc: Invention (trade, Korea);
_110ad: Navigation (research);
_210ad: Banking (research);
_230ad: Gunpowder (trade, Korea);
_280ad: Chemistry (research);
_320ad: Physics (research);
_360ad: Theory of Gravity (research);
_400ad: Magnetism (research); Metallurgy (trade, Korea);
_400ad: Steam Power (trade, Babylon); Medicine (trade, Korea);
_460ad: Electricity (research); Nationalism (trade, Russia);
_480ad: Economics (trade, Babylon);
_500ad: Industrialization (research);
_540ad: The Corporation (research);
_580ad: Scientific Method (research);
_620ad: Steel (research); Refining, Combustion (ToE); Music Theory (trade, Germany)
_630ad: Replaceable Parts (trade, Korea);
_680ad: Atomic Theory (research);
_720ad: Electronics (research);
_770ad: Radio (research); Military Tradition, Communism (trade, Korea);
_810ad: Mass Production (research);
_850ad: Motorized Transportation (research);
_890ad: Flight (research);
_890ad: Ecology (trade, Korea); Computers (trade, Russia); Fission (trade, Germany);
_950ad: Miniaturization (research);
_990ad: Rocketry (research);
1020ad: Espionage (trade, Babylon);
1030ad: Space Flight (research);
1070ad: Satellites (research);
1090ad: Amphibious War (trade, England);
1110ad: Superconductors (research);
1150ad: Nuclear Power (research);
1170ad: Sanitation (trade, Ottomans);
1190ad: Laser (research);
1230ad: Robotics (research);
1260ad: Synthetic Fibers (research);