Prepare your defense against the oncoming waves of creeps. Don't let them complete the path. Do that by building your base that consists of defense towers along the way.
Zombies and ghosts are invading! Defend the local neighborhoods by building an array of towers to shoot at them and open gates to redirect their hungry minds to places of choice.
Organic monsters want to capture our planet. People are in danger! Kill all enemy aggressors. Build your towers and battle units and strike a SMASHING BLOW to the foe!
