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The Serum

By Open game in resizable window
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+nbsp;Zack+nbsp;was a biochemical student. He+nbsp;was having +nbsp;a research with Prof. Rudolf on cell "B", It produced antibody againts antigen. The objectives of their research was to make human resistant to diseases. One day Prof. Rudolf was gone, and Zack tried to find him, He got some clues from the incoming call from Prof. Rudolf's office, Zack found that place, the door+nbsp;was unlocked, but there were a lot of Zombies, and he killed the Zombie.+nbsp; Survival Mode: Zack starts to get addicted+nbsp;to killing Zombie, Efficient Technique, Head Shot and Brain Shot. High Score for The Real Zack....

video demo