The game using the mouse operation, dragging the picture on the right side of the weapons to map the location of the right, finished point NEXT WAVE began to show your teeth.
* in the menu of the right side buy turrets, placed in the road.
* point map of the turret, upper right will appear upgrade (green and good) or sold options.
* after pass, you can go to choose the "Shop" on level upgrade menu based ability (start time also will have default three allocated), it is respectively: mercenaries: increase income; Drop the soldier: add to damage dead shot; Increase attack range engineer: increases the attack speed; Scientists: increase group attack effect (fire, snow, electricity).
Content rating: Low Maturity