I just finished a game where I was the Byzn on a island, actually it was an archipelago map on diety level...
I got pretty high up trading techs with all and building embassys every where joining wars for tech. I was the only power to discover all the ai players (a huge map with all players) loading and saving to make sure that I don't lose my ships
Anyways ai was such great a cheat! I landed in the Aztec lands, with 20 drooms (wow I had luck in that game) and double the number of swordmen, I was able to conquer one city, but then from no where million of troops, I swear to god they were millions! just so many for such a small and pathetic Island blocked me and forced me to retreat. Just so many forces! they should go bankrupt!!!!
I loaded of course, and declared war, before hand bombarding all their roads and making sure I will have time to ruin some of their city before hand. well I was dum struck, I really was. I never so such stupid actions, not even from AI! Instead of defending the city they take out half the forces with a settler to go build a new city on the ruins of one I destroyed.
If you want the save I can add it, I just hope I have the current one...
In the end I quit the game, it was to bad, to stupid, ai had so many troops just impossible and invented itself techs so fast I couldn't keep up...