In my last epic style game with 7 opponents on a large map (ridic/callenge) with spawning monsters and the adventure pack mod, I encountered only 2 AI players after fully exploring the map by turn 400+. Tarth had 5 cities, and another faction had only 1 undeveloped city. No other AI's were encountered. I did find what appeared to be many start locations, where food + 2 other resources were clustered. Large stacks of monsters roamed, sometimes 12+ in a stack, many with damage.
I'm encountering something similar in my current game, this time set to ridic/hard with all other modifiers constant. I've encountered 2 start locations, but the only sign of a potential AI is a light green tile where a city would have been founded. Again, large damaged monster stacks nearby.
What I am wondering is if the monster spawn is too tough for the AI to handle when NOT set to ridic/ridic? Is the early onset of a tough zombie/floating weapon/skeleton wandering in, much less a stack, overpowering to the AI factions?
Has anyone else experienced something similar?