Thank for the feedback guys. You're right about the "fake historical map", true that all those empty steppes are not a country as we intended. I will show the conquered area mainly for aesthetical reasons, to show the inexorable growth of the mongol empire during the 13th century but as you suggest i'll try to focus mainly on the city they conquered. The problem is to find good sources of information about the exact path of Gengis Khan, when did he conquered a city ect..
For the map i have used a nasa dem and apply a filter lightning effect in photoshop.
Here's is a wip with more informations about the country present around 1200. I have used the information and maps of this excellent web site: World History Maps by Thomas Lessman
### Latest WIP ###
Click image for larger version. 

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