I researched as quickly as possible for navigation, then Chivalry (for knights), then Military Tradition( for cavs). Then research was set to 0% and research was done by scientists. At the end of the game I was 2 turns from entering the IA.
India was already toast at the beginning of the MA, and I took my time to finish them off while settling the continent. Once I completed Navigation and had safe passage to the other continent I was ready to ship knights and settlers to attack the Mongols. After the Mongols were pushed right back, I had cavs to take out the French, and the majority of the Dutch.
I couldn't believe how badly the AI played, hardly producing any advanced units. On my continent, Portugal produced one swordsman, and China and India only Spears / Archers / Warriors. The Mongols were no better, the French mustered maybe 3 horsemen, and only the Dutch put up any resistance with a dozen or so Swiss Mercs.
Conquest Victory 600 AD
Firaxis score: 6046
Jason score: 10834
Time played: 15:25:51
I went for Republic sling shot and then chivalry, spitting out settlers and horses. Then I made money for upgrades.
By the time I had conquered our starting continent I realised I'd need either navigation or The Lighthouse to conquer the world.
Needing the commerce for upgrades I built TGH in a 10-13spt town, it took awfully long. Emassing horses while waiting for TGH I also built Leos. And ToA to fill the spaces and prevent flips.
Some 70 horses waited for upgrade and shipping, 3500g total in my bank - I had even built markets in my core towns.
I was extremely lucky leader fishing, the first elite battle got me one, I rushed FP in a core town by the flood plains for a 1-turn-worker factory in the GA.
I researched engineering (to cross rivers more quickly) and invention (for Leos).
Then, 300 AD(?) with ten knights in range I dowed the Dutch who where about to get their UU (I had to fight a single one) and allied everbody else. Then I blitzed the Mayas and finally French and Mongols at once.
All captured and rushed workers built roads, even in swamp and jungle.
Getting knights over was easy, I had also some 30 ships. I stopped ship-chaining due to time trouble (real life struck), set ships on automove and had a decent stream of knights (8 per turn) joining the battle fields.
I rushed temples and settlers to fill the gaps and was close to domination limit when the final towns where captured.
It was a fun game and at times I even managed to focus on my goals (which is unusual).