What is the Air Defense game, how does it work?

According to the introduction of iplus32, Air Defense is a Arcade game on the Android platform. There is currently a 0.94 version released on Mar 04, 2020, you can see the details below.

Control three air defense stations.
Protect six cities from an air attack.

Attention! The parameters of the air defense system are “tuned” to the game and do not correspond to real machines.

What's new in version 0.94 Bugs fixed.