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Features:] ·Completely control of the Maze: Construct the maze with caution. During the game, you will gain many different maze pieces. Gain the best advantage for your turrets by carefully place the pieces. ·Attachments and System Plugins: You will gain many Attachments that can improve your turrets in different dimensions. And after defeat powerful elite invaders, you will get System Plugins that can empower your entire defense system. ·Challenge System: Want a bigger challenge? Want to truely defeat the invaders? The challenge plugins will be your best helper if you can overcome the difficulties they bring.