Your task in this tower defense game is to to build towers to stop invading enemies. Chose your Stark defenders and use YOUR MOUSE to click or drag the superhero icons into the city map to add your Stark Defenders. Each stark defender has three levels of upgrades which can be applied by selecting the tower first and purchasing the upgrade. Each new wave of enemies brings an increase in game difficulty. Be sure to upgrade your towers and sell any ineffective towers. Good luck!