There is a vicious alien invasion stemming from a mysterious meteor landing that was tried to keep under wraps by the government. Now, that government is fighting back, and trying to contain the alien menace and protect the town. Use your mouse to pivot the guns, and click to fire, to destroy all traces of the aliens. As you kill more of the menace you gain money that can be used for upgrades, automatic turret defenses, and special powers. Research new abilities that will help you destroy the aliens, as you battle wave after wave, as you do all you can to: Try To Survive.