There are two types of servers: Mining Servers and Military Servers. 
On the Mining Servers, as compared with the Military ones, there are:
- more Pits and Mines
 - more Ruins  (up to 7) in the Kingdom 
 - much more Ruins for Empire
 - less % of Monsters Army that march out from Ruins for attacks, and the Monsters begin attacking earlier not waiting till they multiply a lot
 - ranks are affected by bigger coefficient of the Army Strength Rating 
 - bigger spread in the scale of ranks    
 - more strict Ranks Rule – players cannot attack other players of ranks lower than own
 - squares for new players with 4 free villages 
 - less squares unfitting to new city foundation
 - the Ancients’ Protection (received as quest reward) that’s staying in the Capital for 2 months 
 - more Gods Favour points to accumulate in Temple
 - increased capacity of the Cache
 - less  squares of high level   
 - more native terrains
 - more the "Exchequer" science gives
 
On all servers where you continuously prolong Subscription:
•	The Black Gems that you obtain in the Game can be withdrawn from server and transferred to another server or exchanged for real money