The save, GGF4 1625 AD
Pre-flight, 1575 AD OK, we have a massive number of cities and Im going to assume the build orders are just fine. Ill work with what I get. I do fail to see the advantage of the civil engineer and cannot find anything in the civopedia.
Sumerians are three techs behind us in getting to Motorized Transport so Im inclined to save the army for tanks. But that is about 30 turns of waiting. Hmmm, well, the Sumerians are not going to be hitting us w/ tanks anytime soon, if ever, so well go for another cavalry army and continue the ransackery of the infrastructure.
IBT: Sumerians want peace. Nope. Yep, Isin was retaken.
Turn 1, 1580 AD
Isin was held by two cavalry. Was. We move a SoD into the city, bomb some infantry and kill some of them off. Cav army pillages three more railed tiles. Ships to the East of the Sumerian/Mayan continent are going to come all the way around to port. Theres not enough on these ships to land and take a city.
A Sumerian flotilla (two frigs and a galleon) comes out of port and heads West. The first frigate is killed off and two other units take an angle to send the others to the bottom.
Working mountains, swamps and jungles.
Neither the Maya or Persians have coal or saltpeter. And neither want a gpt deal. I think it was me that trashed our rep. Sorry.
IBT: Holy cow! The Sumerians take forever, about two score units and retake Isin.
Turn 2, 1585 AD
Intercepting ships get the short end of the stick.
Now this gets really bad. The army loads up w/ three cavs to take out the two infantry in Isin, the defenders are bombed to 3 and 2 hp, yet our army dies. This sucks. The lone cavalry on the continent takes out the Rambo Infantry and then we turn a load of captured arty on all targets until all 6 are bombed down to 1hp.
Move the pillaging army back to Isin or disconnect Lagash? Let them dash against the infantry, the army disconnects Lagash and then grabs 4 workers and kills them out of frustration.
Hovers in 1. No trades.
IBT: Isin holds! 5 infantry and one guerilla are parked on our doorstep. We get a palace expansion. The façade on the palace looks lovely. Hoovers has arrived.
Turn 3, 1590 AD
We bomb the 6 fools on our doorstep to one hp each. Attacking w/ two cavalry we slaughter the first infantry and then the second cav manages to die and make his opponent a 2 hp elite unit. Again, this sucks.
Loading up cavs and infantry to port across the pond.
IBT: Sumerians throw cavalry at Isin until it is recaptured. Zitlapecblahblah is lost to Berserkers.
Turn 4, 1595 AD
Isin is retaken w/ 4 infantry.
Viking ships off of the Celtic coast have me concerned. We move in the cavalry army and reposition forces. We also hit up the more populated city with a draft.
Use our cash reserves to buy up factories. Should have waited a turn or two for US to finish.
More cavalry land on our Sumerian beachhead. Cavalry army continue to wreak havoc on the Sumerian infrastructure.
Persians want saltpeter to backstab the Sumerians. Not a problem.
Rushed several frigates on the western Celtic coast to intercept Viking ships.
Research pulled back to gather some coin.
IBT:

A 1hp cavalry I left stranded takes out 5 weakened Sumerian cavalry. I feel better about the loss of the army now.
Isin is not attacked. Sumerians land an infantry.
Turn 5, 1600 AD
Sumerian infantry is dispatched by our mixed cav/knight army. The AI just does not know how to conduct a good landing.
Moving artillery in position to pound the snot out of Marad.
IBT: Thank goodness
Nothing! Except we built US.
Turn 6, 1605 AD
Alright, now we have some serious forces ready in Sumeria.
Costco needs an entertainer. Actualy, they need a market.
Cant bring myself to pull the trigger on mobilization.
IBT: Ha! Again. Vikes try a Zerk assault on August (renamed) but we placed two infantry there last turn. Sumerians moved in some cavalry to pillage roads but they will never get the chance.
Columbus riots. Their football team must have won the national championship.
Turn 7, 1610 AD
Sumerian frigate sunk. Next turn the lone galleon runs into two privateers and a frigate.
Marad is ours.
Three Sumerian cavalry bombed silly and killed.
Columbus gets an MP. No trades.
IBT: Sumerian galleon sinks our privateer.
Turn 8, 1615 AD
Our frigate sinks the Sumerian galleon.
IBT: Sumerians lose cavalry attacking our infantry. Berserker kills off our musket on Nagsu.
Turn 9, 1620 AD
Trade frigates with the Vikings. Pick off another Viking frigate.
Rails, mines and clearing of mountains, swamps and jungles.
Sumerian workers have hooked up their capitol again.
We get a MGL mopping up units around Isin and make an army.
No trades.
IBT:
Sumerians
Viking frigate pulls away from bombing Nagsu to sink an approaching frigate.
A couple Viking flotillas are heading towards our West coast.
Lost our supply of furs from the Maya
Turn 10, 1625 AD
We sink another Viking frigate and then another.
New Ameins is founded in former Sumerian territory and has an infantry Army forted there.
Kill a berserker outside of Nagsu.
We trade Corporation to the Maya for furs, Espionage, WM, 28gpt and 540g.
We have a monster SoD head towards Ur.
Top 20 cities are building stock exchanges, cavalry and a temple.
We never mobilized. Was too keen on continueing building stock exchanges and other infrastructure.