Your mission in this shooting online game is to use your fortress to halt the enemies that threaten to invade and destroy your home. Buy turrets, upgrade them, and shoot the incoming enemies. Once the game starts you will see a menu called The Formation Screen, here you can choose your turrets and decide how you want to set up your defense. Once you have selected and placed your first turrets you can then start the game by clicking the "Bring It, I m Ready!" button. Use YOUR MOUSE to aim, and click/hold LEFT MOUSE BUTTON to fire upon the swarms of enemy aircraft. Good luck!