Maybe race for the new world? Featuring Russia, England, Scotland, France, Spain, Portugal, the Netherlands, and Denmark. (New World Holdings being Alaska[ceded], New England, Panama[failed], Louisiana, New Spain, Brazil, the New Netherland[ceded], and Greenland respectively.)
To keep them from colonizing the new world, there might could be the Aztecs, the Inca, the Maya, the Iroquois, and another Civ or two I've got in the conceptual stages.
And of course, there would be some observer civs. China, India, Germany, Austria, Ottomans, Sweden.
There would be preset relations between the civs. Pre-explored territory. My aim is to have all of the territory of Europe to be taken up, and, for gameplay reasons, to have player countries be fairly resource poor.
Perhaps winning could be like this.
- Being the first to explore a tile gives you the honor of discovering it. Having discovered tiles is a victory condition. Most takes this VC.
- Number of Colonial cities gives you a score. Highest score takes this VC.
- Population in Colonial cities gives you a score. Highest score takes this VC.
- Discovering Natural Wonders gives you a score, and having the most gives you this VC.
- I need a fifth victory condition, though. Maybe something dealing with city state allies?
Holding a majority for 10 turns lets you take all the chips.
However, you could completely forego the VC's and go for Domination, Science, Diplomacy, or Culture should there be a stalemate.