I know, it's deity. It should be hard. It was probably a bit to easy before. But this is just unplayable. It's very enjoyable for the first 150ish turns or so. That is about for as long as I have managed to keep up in a couple of games now cause after that the snowball is real and it's just unbeatable. There was some kind of tech, policy, wonder parity up until that point. During the next 100 turns or so the snowball just starts rollin' cranking out techs, policies and wonder like there was no tomorrow.
In the next 100 turns, slighlty less, their (Morroco, I don't know if it's just them or what is up but I don't think so -- India isn't far behind in this game either but the rest of us are just eating dust) capital almost triple in size to 27, India isn't far behind at 25. The third largest capital in the world is 15. They only build two more cities (from 5 to 7), but go from 27 to 123 pops. Morroco complete almost an entire policy branch as others gain two-three policies. Morroco builds 8 wonders during this period. The tech span was all civs within four techs of each other. Morroco wasn't even the leader -- Siam had constructed the great library and was on top. So in less then a hundred turns they research 24 new techs on top of what they already had. That is almost a tech every fourth turn, on epic speed (there is no tech trading or brokering or anything of the sort). I would say it's impossible to keep up with it. When I, and the "normal" civs, do one tech -- they will have done 3-4.
Not being satisfied with this, Morroco manages to spread their faith to 30 cities making it larger then all other religions in the world combined. They didn't even get the first religion, it was the third. They now cover themselves, three others civs and seven city-states. Also they somehow also managed getting defensive pacts with five other nations.
I tried being a bastard and do an early war start, running around hunting settlers etc. I captured three of them. Did that even put a dent in the AI and their settling spree? Nope.
I could play on a lesser level but I'm not sure there is much point to it. The snowball is there to, just not as hard. But from what I can tell here fairly hard.