u/FarCharacter7797

Is this a bug?

Basiacally past the first week the AI isn't a challenge at all. They don't stack units like at all, they avoid taking your cities as well for some reason, like literally walk past your cities. When you set the AI to the highest difficulty it just suicides into you in the first week and there isn't much you can do but beyond that it doesn't really change the way it acts.

When the game goes on for more than few weeks the AI just gets outmatched and it doesn't build a big army at all, it's like at some point it just stops buying units?

I don't know but it's not very fun.