Space Base Defender

You will now fighting a battle for your base! first it will look very easy, because the cannons will be weak, and the base is small, but the more you'll earn money and improve all, the fights will be harder! Broaden the base for what would put more tools that will protect her and, after you're done with this you will be able to call the fighters who will also be gunning for enemies with guns in place, it will be a real battle!