A base was built on one of the small planets and its purpose was development and expansion. But suddenly a serious obstacle appeared, which no one suspected. The planet decided to capture the aliens from another galaxy. There are many of them and attacks will be massive in Environment Defense. You will have to not only think about protection, but also build a serious multi-level defense. In the lower left corner you will find a set of defensive elements that you can use. It all depends on the amount of money. The receipt amount will be displayed in the upper right corner. Buy everything you need and provide reliable defense in Environment Defense.
