Monsters must protect San Francisco or even the world from these evil aliens. Place your monsters around the map to defeat the incoming waves of aliens.
Defend your land from invading enemy troops. Build defensive towers along the road strategically choosing which type of tower to build, upgrade them in time and always be one step ahead of the enemies.
It is time to be evil and destroy the human world. Use your underground fortress to build a tower and emerge from the ground to cast the ultimate destruction spell. Be careful though! These puny little humans will try to stop you.
