This game have :
1. Multiple layer of security.
2. It has their own game guard.
3. It always maintenance 1day per week and bann who has disobeyed thier T&C.
4. Almost all data was stored in server side.
Ive been use the Add-On before and its like they are dead... For now ... Im believe... xD
And about the mod apk,maybe....
Maybe some of us can try to mod it but onyl for dmg,casting time,refinery,speed... which is not connected to the server side..
@MouatazX