Downloading Defense zone 1.9 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The most popular versions of the application are 1.6 and 1.4. The application lies within Games, more precisely Strategy. The actual developer of this Mac application is Artem Kotov.
From the developer:
Defense zone provides a stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets.
During the game you will hold your defense 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: to restore and upgrade your veteran units, or to purchase some new ones.
You may want to check out more Mac applications, such as Defense zone 2, Defense zone Lite or Breathing Zone - Relaxing Breathing Exercises, which might be similar to Defense zone.