Round 5, 600 AD - 1100 AD (30 turns):
I started out by switching tech from Aesthetics to Alphabet to better assess the situation.
640: GG #12 BIDL.
I decided I had had enough of waiting for barbs to spawn to unlock a HE unit and sent my settler to settle my 7th city to claim the sheep.
660: UoS BIDL.
I finish Alphabet and decide to go for Optics next, first tech on the way: Iron Working. I feel I'm likely too far behind at this point to win this game unless I can expand beyond my island and so I decide to bulb my great scientists rather than settle them in the capital for the short time advantage of getting the necessary military techs faster, sacrificing post-rennaisance research. I use one of my GSs to bulb part of Education but hold on to the other as I'm not ready to build universities anywhere yet and not sure if I should self-research the rest of Edu or make a sub-optimal bulb to finish it faster.
SB has not gone for Optics yet at this point which validates the decision to push for that asap.
680: I found my 8th and final city for now. (I might get around to city 9 and 10 as marked on the map if I get corporations but otherwise they seem pointless).
700: I finish research on IW and go for Metal Casting next in case I need a trireme for a remaining barb galley. Is there iron on my island?
Indeed there are 3 sources, 2 within my borders.
720: GS#4 is born in Thebes, I save him for later.
760: Sistine Chapel BIDL.
I decide to bulb the rest of Education with GS #3 as Athens is now ready to build a university and I'm generating new GPs fairly rapidly without the NE or Pacifism thanks to being Philosophical.
As my cities finish up markets they begin on universities. Meanwhilst SB has gotten Compass and Optics so I anticipate some trades.
800: MC finish and I start on Compass. My workers start to build as many workshops as I can support with food.
860: Compass finish and I start on Machinery.
880: Angkor Wat BIDL.
I decide that SB has been illiterate for long enough the por sod and I sell him Alphabet for some gold to ensure I get something out of it.
960: I finish Machinery and start on Optics but..
I meet 3 of the unknown civs at once. Julius Caesar and his two vassals, Sury and Vicky. JC is in a monster lead with over 3000 in score to my 800 (18 cities to my 8), he seem to have spent most of his energy fighting though so he's not yet completely runaway in techs.
Sury has taken a dislike to SB making the chief his worst enemy while JC is the worst enemy of SB.
With this in mind I trade some techs with SB first which he is now willing to share.
Then I trade with JC.
With Calendar and Optics aquired I can instead start teching Astronomy directly, however I have an unused GS and decide to bulb him for part of Printing Press and research that first. My 5th GS is on his way and can then bulb part of Astronomy.
I open borders with JC and Vicky who are confucian since neither of them have Astronomy, which will help relations and give the possibility of confu spreading to one of my heathen cities.
1000: PP finish and I start on Astronomy. Vicky gets the circumnavigation bonus (she's the one that got first to Liberalism as well).
1020: I meet Zara Yaqob. He's ahead of SB (1800 to 1500 on score) and the tech leader. He's in free religion and friendly with everyone.
1030: GS #5 born in Sparta, I bulb him for part of Astronomy.
1080: I finish Astronomy and start on Aesthetics to get Drama for the GT. I open borders with Zara who is the only other civ with Astro thus far, forgetting that I need to find one of his cities in order to get the trade bonus. This is unfortunate as SB switches to Mercantilism around this time leaving me with only internal trade routes. I had not been building any caravels since I was contacted by a score of civs anyhow and I prepare to switch some builds to get some scouting done.
1090: Finish Aesthetics start on Drama.
1100: Drama finish, I end the round with Construction in queue. I start on Oxfords in Athens and start to chop the last forests to speed it along.
Shot of empire:
There's only 1 foggy tile left and 8 turns until that is revealed by my culture. In addition to this SB has been fogbusting it with his horse archer for most of the time since I founded Mycenae. It would truly be a stroke of luck if a barb spawns there in the last 8 turns so that I unlock the HE before going to war.
Tech situation:
JC just came out of a golden age that served him well. I'm afraid that he'll focus on his economy and become unstoppable. OTOH at the end of the turnset he became WHEOOHRN, hopefully he's gearing up for war with someone else than me. He might have declared at the unknown civ also. He demanded gold tribute from me once that I gave him but I'm woefully weak and must be a tempting target.
I could trade Drama for Literature but I don't see the point as I think I'm past the stage where the NE would have been really useful and I'm probably not going to unlock the HE before warring. It's unfortunate that SB and JC don't want to trade the techs I really want (Construction and Gunpowder). I'm finishing up GS #6 in Argos then I'll only focus on GP generation in Thebes. I think I can get 2 GSs in time to instabulb Chemistry unless I can trade for it before then. I haven't looked at the GS priority for bulbing Steel.
Demographics:
I've moved up to 4th in land behind JC, Zara and SB (probably). If I capture SBs lands I think I'll be just a little bit smaller than JC in size. Other stats are quite bad still.
The relations:
SB hates everyone which I hope means he'll stay backwards in tech. He's looking like the only viable target to invade right now unless the unknown civ turns out to be even weaker. Sury hates me since I traded with SB but he's a vassal of JC and of no concern right now.
On the to-do list: Get caravels out and scouting. Get the GSs for some last bulbing, tech towards Steel. Get theatres and the GT up as well as observatories, forges and barracks. A golden age from a GP might be nice if we want to switch out of Caste later for Slavery along with switching from Bur to Nationhood (or is the CS workshop bonus more important?). Perhaps it's better to save a GA for after the war. Hopefully we can trade for Nationalism.
We need to decide what units to use beside cannons. Meeting the last civ is also important, scouting should take care of that.
Right now the danger is JCs WHEOOHRN state but there's nothing to be done about that other than pray we're not the target.
Anything I'm forgetting? Please chime in.