You are the leader of a military unit that has the mission to protect the world. Your world is in danger, and the enemy is coming for you. Your job is to stop them before it's too late.

Your defense will be built using various types of towers and turrets. You can build them anywhere you want, and you can build them to any size. You can upgrade them and add more defense. You can also change their placement and angle. They can all be upgraded to a greater level.

You will have various types of units to fight the enemy. You can build them and use them to fight the enemy.

You will have a large number of strategies that you can use to protect your world. They include things like, multi-pronged attacks, the use of tactics, etc. You will have to decide which strategy to use and which one to avoid.