You are the king of a small kingdom, and you need to protect your people from an evil monster. In order to do that, you need to build a defense system, and the first thing you need to do is to study the various types of attacks that your enemies can launch. This will allow you to know their strengths and weaknesses, so you can devise a strategy to defeat them.

The game is in a 3D world, and you will be able to interact with the environment, so you can build and destroy things, and you can also get different items, such as weapons and armor, to help you in the fight.