Before the aliens arrive you have to plant guns where you want them. The longer you play the more kinds of guns you'll get. The app will show you the path the aliens will take to your sheep so you have an idea where to place guns. The more aliens you kill the more money you'll make and you can add more guns as the invasion is happening. Watch the menu at the bottom of the screen to which kinds of aliens are coming next. You'll get a combination of walking ones, ones riding bugs, giant ones and even flying ones. Find more apps in our Top 5 Best Strategy Games.
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How to Use TowerMadness Zero Strategy Game