I should be playing Deus Ex: Human Revolution, which is simply fantastic, but I can't stop playing Civ V. Just completed a playthrough on King, which is the first difficulty level that the A.I. Civ's starting receiving unfair resource and cultural advantages, and am currently in the middle of an Emperor run, which is kind of ridiculous. I can't imagine what the Immortal or Deity difficulty levels will be like in terms of A.I. advantages. On Emperor the A.I. cities growth is double my own and their culture, resource and unit generation advantages are kind of absurd.
The A.I. in the higher difficulty settings is pretty easy to figure out though. If there's a large body of water between you and it, you're generally pretty safe, if it's on the same landmass, it's only a matter of time before it declares war on you. I got nuked, 3 times, by Suleiman in my last game. When that asshole sued for peace, I steam rolled his entire damned nation and nuked his last city three times before crushing him. It didn't matter that I was going for the science victory and hadn't antagonised anyone, I was just there on the same landmass. My Emperor run is proving this out. Friendly for a few turns, even ask for resource assistance or open borders, then attack out of nowhere with some crazy overwhelming, advanced force that I take a few hundred years to successfully repel.
I'm on the final map size and land mass variation but have two more difficulty settings to play through and 14 leaders to play through the main campaign with. This isn't counting any of the DLC scenarios, two of which came with my purchase of Civ V and the viking one I purchased along with my copy. I have only played the single player campaign, and my play time is sitting at 64 hours. wat