In the sequel Sigma Team strives to put all the best features of Zombie Shooter and Alien Shooter series, player's needs and suggestions have been listened to, as well as improved gfx, larger variety of enemies, more vehicle types, and more than 50 weapons and accessories.

In the sequel Sigma Team strives to put all the best features of Zombie Shooter and Alien Shooter series, player's needs and suggestions have been listened to, as well as improved gfx, larger variety of enemies, more vehicle types, and more than 50 weapons and accessories.