An unknown virus plagued the planet, bringing all sorts of monstrosities, ranging from zombies to flying beasts. Enter this apocalyptic world and try to survive as long as possible.
The enemies are trying to enter your country and they are planing something big. America's finest agent was sent to destroy enemy base and kill them all. Destroy the base, kill all the enemies and get your base back.
Fight against zombies with over 34 different unique guns for the highest score with an accurate ballistics engine or go to the range and test them all and try training exercises.
Rise to the call of duty to execute covert operations in the snow. Destroy wave after wave of gunners, rocketeers, jeeps, and UAV's, earning money and buying weapons along the way.
The world suffers from oil crisis and you have to defend the last desert oil-base from the incoming enemies and armored vehicles. Earn experience points to get new weapons and don't forget to use power supplies dropped by allied aircraft.
