Pros and aspects improved and added: metropolis and charts scenarios, troops, battles, movements, destructions of realistic buildings, the hero with a skill, the gameplay of being attentive to things is much better than the 2 etc
and with the expansion asían of dinastyes with 3 new civilizations: Chinese, Indians and the Japanese (my favorites)
It is not the best but it is not the worst
The bad: the campaign is something well done but it would have been better if it had been something real like the conquest of the Spanish or European fights etc
AI is very challenging that is good for more time and more entertainment if it could have been better than age of empires 2 but well I have also played many strategy games and there are worse, how many times have we expected something so great from a game of a saga good and we disappointed good age of empires 2 will remain the best game in the saga but the 3 is not the worst, well everyone has their preferences and tastes but we must recognize that at least fill a part of the story with the colonies (if there had been campaigns of the conquests ...) it is good to
you play with all civilizations. I recommend it if you want to play a strategy game as I described it is also difficult to get used to a game like that if most strategies are more of melee fights swords arrows spears horses (most of the games I would say) well that's it and I hope that the 4 is better even if you take into account that if the game is like that, it is because the creators created it, not the game. Greetings
PD: I prefer the 3 because I expected a more real game and more personalized troops etc and also be the age of the colony