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?
*UPDATE:
There some complaints about that the final weapon dosent go to the end of the screen, this is only the case when there are over a certain number of shots in the air, I recomend holding down your mouse for a sec then let it go, the bullets you fired should go to the end of the screen.
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.