Very good game
The story of the PLANET.
It was once a peaceful planet with only three small turrets for defence, which of course it never used since it was so peaceful, that is, before the ALIENS attacked.
The peaceful planet was caught by surprise and the calm realm was reduced to 1 hitpoint. But in the end the planet retaliated and the defensive matrix grew until it had four hyper turrets. But this was not the end. the matrix grew rapidly until it consisted of 23 hyper turrets. 17 more waves of aliens the planet survived like this, but in the end, it met a horrible demise...
In other words, very good game. What you need to do is just go for hyper turrets once you can afford them, then just put more and more of them in a circle around your planet. And one other thing, once you've got several hyper turrets, just go mad.