Defense calculator for the Grepolis online game (GrepoDefCalc) is to quickly analyze and build defense in the online game Grepolis (http://www.grepolis.com). The application contains the optimal proportions of the ratio of units to build a balanced defense using mythical creatures. The analysis tab of the enemy defense allows you to analyze the enemy’s weaknesses. And the tab for building your own defense with the ability to save up to 5 sets will allow to construct suitable combinations for cit