Try to escape a city that is infested with flesh eating zombies. Find new weapons, upgrade them and kill hundreds of zombies in 10 levels and 3 challenge levels.
You are a part of US Combat operation. Complete the operation by shooting targets down. You got limited time to complete the entire operation, otherwise you fail.
You are attacked by a horde of monsters from underworld. Once again, you will have to gather resources to create and upgrade units and defend your country.
