I know this is kinda.....late, but I finally managed to do the hardest victory of them all (to me at least). INVASION BY TOURISM! Using Brazil on Prince, small continents. I managed to win at turn 519 after I think I will not catch up to Ethiopia's massive cultures. But I persevere! Here's a screenshot on steam! http://steamcommunity.com/sharedfiles/filedetails/?id=762821141 Now bring on Civ VI!