I searched the forums first to see if anyone else has posted anything about this yet, but I didn't find anything. But it might just the games I've played.... I've played a few games so far a prince/standard size/continents map. One thing I've noticed is that the AI doesn't seem to explore the world at all. They basically stay on their continent (or jump to a small island nearby). I've never met another civilzation by them sending a boat across the ocean. I always find them. As a test, I stayed on my continent the whole game and then starting sailing around after 1950 or so. I found small islands with barbarians still on them, and also met the rest of the (surviving) civs and city-states in the game. Has anyone else found the AI civs to be rather weak at exploring the world via the oceans?