confused over map DLC's

I have all the DLC from the steam store but it's not apparent where all the "explorer" maps etc are on the game; mesopotamia etc

I've reset steam and they have appeared. strange. cheers. delete if want

Maybe you hadn't downloaded the recent patch before? Previously the DLC maps were only accessible through the 'Advanced Setup' menu, but the new patch added them in folders to the main dropdown menu.

My only query is whether the 'Randomize maps' option now includes the DLC maps in its randomisation, or whether it just chooses from the non-Earth vanilla maps, as I believe it did in the past.