I create random map scripts in Age of Empires 2. My most recent one being for the HD version, which can be found here [http://steamcommunity.com/sharedfiles/filedetails/?id=172861335][1]

If you're looking to understand how Age of Empires 2 create their maps, there is an excellent guide to RMS (random Map scripting) which can be found here [http://dgdn.net/dgdn.php?id=3&cat=article_pages&heading_ID=1&cat_ID=3][2]

Age of empires uses an expert system which allows scripts to write routines for the generation rules which you can learn a lot from. As for regions I imagine that would simply be a case of masking off areas and applying different scripts/routines to the masked areas accordingly. You can easily see the generation rules of existing map scripts by opening them in a text editor, I write mine in Notepad.

If you'd like to ask any questions feel free to contact me at [email protected] via skype or email.

All the best,

-Andy


 [1]: http://steamcommunity.com/sharedfiles/filedetails/?id=172861335
 [2]: http://dgdn.net/dgdn.php?id=3&cat=article_pages&heading_ID=1&cat_ID=3