Hardhead Squad: MMO War for Android
Each player can build a full-fledged base with production departments and defense constructions. There is a hero that can be upgraded according to the rules of RPG and you can also produce various units the power of which depends on the base upgrade level.
The battles are arranged with the help of a global map where settlements of all players and other game objects are displayed. You can attack other players or defend, struggle for resources and crash enemy camps. There is a clan system.