Lost Temple (version HOMM4). 
Recommended difficulty to play - advanced. 
Above-ground - continent, 
underground - islands. 

13 towns on the map (4-players, 9-neutral). 
Any player may have tavern, two gold mines, dragon cityes, each levels of shrines, etc. Centre - Power Ups, Artifacts, underground tunnels. 
Created by Max[Apes], Russia, Apatity