Use your mouse to aim and shoot.

If you prefer to listen to some other music while playing, you can disable the music by pressing the speaker in the top right corner, press it again to disable all sounds.

If you want to change weapon to another allready bought weapon, you can do so by pressing the equip button next to it.

Defend your bunker against tanks, robots and airplanes then go shopping for the most powerfull weapons of the galaxy. Do you have what it takes?