This is the only and also final choice for humans. Fight to the end and protect the earth from attacks from aliens.
-Build towers with different functions Each towers have specific powers for you to explore. Unlock and upgrade them to defend the attacks and fight back as well.
-Use the strategies to combine towers Take best advantage of towers according to the attributes of enemies. Continue to refine your strategy and achieve the victory in final.
-Choose best upgrades to power up Choose from numbers of upgrades to strengthen your tower after endless waves of enemies. Experience the fun of Roguelike game!
-Collect resource to level up and unlock epic techs Each battles offer rich rewards which helps to power up the weapons and also towers. Techs will also enhance your power a lot.
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