Spoiler Special Rules for this Challenge :
I cannot settle additional cities in the old world. I cannot defend my capital and must allow another civ to capture it. Then I must retake my capital, and win the game. Credit to @SpankmyMetroid for the idea.
8 civs, 16 city states
Standard Speed
Terra
No ancient ruins, tech trading, or events
Spoiler Pre-Game Strategy :
Polynesia is the civ, I use the ocean embarking to send my people to the new world, where I must start a new society.
Polynesia's UA has immediate embarking, including crossing oceans, which is necessary for the challenge.
Then you get +2 food from fishing boats and atolls, and you can build these with melee naval units. This is a small but decent economic boost.
The real strength is the Moai. I love this improvement, culture and production are the most important yields. It can be built on resources but doesn't connect them and gets a bonus for adjacent moai, which lead to interesting decisions with city planning. The huge culture output pushes you towards a tourism victory.
The Maori warrior probably won't matter at all this game. I don't expect to be at war during the medieval era.
Spoiler Starting Position :