So here’s some feedback of the 3,4 version, emperor level , just the points I can actually demonstrate — there would be many more.
Joao, first place in the rankings, with only
one city and a
small army, at just
20% into the game, already leading in technology. It’s interesting to see how the first place (Joao) and the third-to-last (Mongolia) have armies of the same size — something rare, because in 3.72 you only reach first place if you have the largest army or at least one of the largest (see screenshot 1).
After a few more turns, Joao is still first in the rankings, first in technology, with a single city. Robert the Bruce is in third place with just three cities. All civilizations remain hyper-active from the first to the last. Look at how civilizations with little territory and small armies are among the top spots in technology (screenshot 2).
After another 200 turns, Joao is still second, still with just one city, still first in technology, only surpassed by Zara. Notice how Hannibal is very advanced in technology and among the leaders, as are the Khmer — both still fully in the game even as vassals.
Pericles, for example, is small in numbers, but still competitive for victory — second in technology ranking even with a small army. No zombie civilizations: look at Ashoka or Frederick, both vassals but still technologically advanced, making them very useful in war, both for defense and offense.
Even Genghis Khan, under attack, has a very high technological level.
Look at Hammurabi — a true city-state back in 3.4, competing with a single city . In 3.72, after 600 turns, he would already have disappeared or been “zombified” long ago.
I’m showing two statistics: score and power screen 5. Later I’ll provide more feedback.
the A.I. is no longer just “annoying,” it simply plays better. For example: slaves spawned and started moving toward my city, but there was a river between me and them. What did they do? Instead of attacking directly, they crossed the river, entered a fort that I use as a canal, and attacked me from the fort.
I don’t show this to “prove” anything, but simply to contribute something useful for the development of future versions.I don’t want to create any controversy, and I have no interest in “cheering” for one version over another. For me, 3.4 or any of the 3.x versions are the same — the author is the same — and I gain nothing by saying that one version is better than another. So please, no fanboy talk. I’m only doing this out of love for the mod and for Civ 4.
edit: Here it happens: on turn 631, the leader in both score and technology decides to become a vassal of the Spanish (screen 7), So João, who at the moment would be winning in a technological race and is first in score if we exclude Ethiopia’s vassals, decides to become a vassal of a civilization that is clearly inferior in many respects—except for military strength.This is a very smart move, one that would never happen from version 3.6 onwards but one that would actually allow Portugal to win the game.This is an example of what a useful vassalage system means — exactly how a human player would use it in a technological race if they were weaker in terms of military units, and this is why, for me, version 3.4 represents the very peak of all Civilization IV mods.
This is also why, for the next versions, I would
recommend starting from 3.4 — because I would never lose such a balance; as I’ve already said, it’s an extremely precious asset.
edit 1: Spain declares war on France (screen 8).With a vassal like Portugal, Spain will definitely have an easy time. Look, after only 2 turns, Portugal, with a technologically superior army, is already ready to cooperate with Spain. It’s going to be very tough times for France (screen 9)
edit 2: Poor France — Portugal conquers one of its cities (screen 10), but it was obvious: Portugal is too technologically advanced. And it returns to first place or near in the score rankings, even as a vassal

— but it will surely break away from Spain when the time comes.
edit 3:
As I anticipated, Portugal has broken away from Spain and is once again leading on its own ((screen 12 ).
Portugal, with a strength comparable to Hannibal in third-to-last place, is in first — executing what I would call a perfect strategy.