You are a new commander and the King is quickly bringing you up to speed on the situation. To the west sits an army that is determined to overrun the castle, it is up to YOU to make sure that doesn't happen. As the army sends wave of enemies to destroy you, you must strategically build towers to defeat the enemies before they can reach you. Build up your defenses and upgrade your towers to include special effects to help slow, freeze and halt the army in its tracks. After defeating the army in normal mode, go back through endurance mode and see home many waves you can face before losing.