Defend your base from the enemy attack. You have to arrange your arsenal of weapons around your base to protect it. You will have different kinds of weapons like tanks, missiles, shotgun and even nuke! But you will need lots of money to buy greater weapons. The enemies will come from various directions. So, you better put some weapons at the entry in each direction. Barriers can play a very good role here as this will force the enemies to change direction. You can repair your base if it has suffered much damage. There are waves of enemies in this game, so try to survive as long as possible.