Nobody pays attention to a meteorite fall in the jungle and a few years later, military satellites discovered strange activity in the jungle. Your government sends elite commandos to find out what is going on and to try and clear up the situation..
Create a maze out of your towers to defend against 49 levels of advancing creeps. Five different towers with five Upgrades each including distinctive elite towers.
Defend your fortress from the oncoming enemy waves. Place turrets in locations of your choice on your fortress, creating the best defense possible to withhold even the greatest of attacks.