What is the Defense Zone - Original game, how does it work?

According to the introduction of ARTEM KOTOV, Defense Zone - Original is a Strategy game on the Android platform. There is currently a 1.1.3 version released on Feb 25, 2020, you can see the details below.

This version is the first version of «Defense zone», as it was before the advent of options HellFire ( temporary increase in power ) and the change balance levels of the game .

Enjoy the increased complexity of all 10 levels for free.

Description.
Stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets.

During the game you will hold your defence with your turrets against the massive hordes of enemies.
With every level you will have the use of new weapons at your command.It is up to you, commander, how to spend the resources: restore and upgrade your veteran units or to purchase some new ones.
Different types of weaponry and landscape provide you with a variety of choices of defence tactics.
Choosing the right weapons and the correct placement is key to any successful defense.
The weapons have different firepower, rate of fire, firing range, blast radius and price.

What's new in version 1.1.3 - Bug Fixes