Click anywhere on the screen to launch a rocket. The rocket will explode alone when it reaches the clicked point on the screen if it does not hit any asteroid.
When the rocket explodes it creates a shockwave that last for few seconds and any asteroid that contacts the shockwave will be destroyed. When the rocket hits an asteroid directly, the asteroid will explode and also release materials that you can use to upgrade your base.
The top of the screen is divided into three parts:
The top left corner of the screen is the game menu
The top middle of the screen is the current level.
the top right corner of the screen you can see:
You can upgrade your base by Clicking the button [Manage Base] on the Start Screen.
Then clicking on the base and selecting the upgrade option.
You can upgrade the following:
There are 4 types of power ups available along the game.