I didn't know wonder spam was an actual strategy (I even posted here that I found wonder useless) but I arrived at it naturally these past 2 days.
Conclusion, 2 cultural victories at around turn 175 in a row; which is uncommon for me since I restart when anything goes wrong; meaning anything went wrong these games (at prince, which I know isn't that great, but still, game is still new damn it) .
One with Brazil, another with Greece. Pretty straightforward strategy; early settler, early campus on both cities, then wonder spam while using gold to buy builders, traders, defensive units and settlers now and then.
Between wonders, I build districts (gold, then hammers, then culture), but not any buildings; I only go for buildings if there are no wonders and these 4 districts are already built.
At around the industrial age, I am exploding on everything. Way ahead in science, lots of gold pouring in, culture is amazing. When AI declare war, I'm so ahead technologically and with so many city-states as allies, their vast forces just melt to my few units, forcing them into a profitable surrender. Then I just press enter until win.
Seems too easy, even for prince.