Alien Complex is an action shooting game where you play the role of a soldier. Aliens have invaded the earth slowly and your goal is to foil their plan and save your home planet. Unlock more characters and soldiers as you play. Grab weapons and make sure to conserve those ammo. Enemies can shoot too so watch out for their bullets hit really hard! Go to the alien’s underground base and defeat them all! Play as an elite soldier of the planet Earth and stop the alien invasion in this awesome action shooter game – Alien Complex! Shoot the aliens and upgrade your arsenal so you can get rid of the alien menace and spoil their plans of conquering the world. So enjoy and have fun in playing this free online game. Good luck.