I've been playing a few games with the default world settings and I really liked them.

Now, to change things up, I wanted to try new settings and started messing around the drop downs.

But then I eventually wanted to play the regular world ... and I didn't remember the defaults nor did I find an option to restore them.

Am I missing something?

P.s

I did find a workaround by loading an old save on a default world and going back to the main menu which, as far as I can tell, did restore the world settings for new games.... but that's hardly a practical solution.

The top option in map settings are a bunch of pre-sets.  I don't remember which was the default (2 continents?), but I know pretty much every option which has "Few, Standard, Many" was always set in the middle (Standard).