Send out your robot troops to push back the persistence zombies trying to breach the city walls. Only a well-planned out strategy will see the survival of your city in this action tower defense game. The soviet AI is back! Evil corrupted masterminds have found a new way into his base, a zombie plague has started! You have to defend once more from possessions from the undead. Utilize your skill tree with your hero, use turrets and traps against the invasion!