Fortitude invasion is an endless arcade game with RPG elements. A summer day and a well-deserved pension, nothing portends trouble.. So? No! Alien invasion, invaders who want to enslave the earth and eliminate all the seals (not exactly about the seals). In the game you have to fight off waves of aliens using a gun or a machine gun. Protect yourself and your supplies from a whole horde of aliens. Upgrade your weapons and try to survive as long as possible. You have a rich arsenal ! Forward to the defense of the earth! Features: - Character leveling; - Table of records; - Nice graphics.