War To Defend The Earth game

Mouse click on the right side of the turret in the right place, click on the turret and then click the arrow in the lower right corner turret upgrades. How to get started: The game is loaded click PLAY GAME - difficult to start the game and then choose the game: What? To go to the end of the world? This is true or false it? The emergence of an unknown object outside the Earth attack the planet, ready to fight back now! Game objectives: Reasonable construction of the turret, the successful invasion of the enemy destroyed it all!