The world is under attack from the most gruesome monsters hell has to offer! Build & upgrade your towers, equip them with gems for different effects and try to keep the world safe.
The Reich is invading Europe! As a commanding officer, it is your job to stop them from reaching their goals. They have tanks and planes, you must stop them with defensive turrets that you have to command and lay in strategic places or all hope is gone.
Defend the space carrier with a turret by gunning down as many enemy spaceships as possible. Get additional help by sending out carrier fighters of your own.