20 minutes...you have waited that long in line, at the microwave, and at the bus stop, but can you make it that long with zombies coming for you??? Just stay calm, your rescue helicopter is coming for you, you just have to survive till it arrives. In this cinematic thriller, you'll need to hunker down and hold you ground as the zombie mayhem unfolds. Defend you camp, maintain your barricades, and pull off as many headshot as possible. With your WASD keys, navigate your character around the map, aiming at zombies with you mouse and clicking the left mouse button to fire.