Alien Shooter TD – a well-known and now cult game will perform in a new role. The guys from Sigma Team decided to make a real tower defense and we can say they got it. The army of alien creatures seeks to destroy and destroy all life. On the guard will stand the fighters of a special detachment, who, if properly trained, will fight back. Each soldier has his own specialization, you as a commander must correctly place your forces to repel the attack. Each class of fighters can be pumped and improve their abilities, without that you definitely can not defeat the enemy.