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You have been kept as human test subjects in an underground biological weapon research facility. A brief power failure has allowed a dangerous mutagen, code-named ZMB-13, to escape into the environment, turning everyone in the facility into the walking dead. Amazingly, your air filtration unit remained active during the blackout, sparing you from their fate. Now you must fight through the hordes to reach the surface and whatever rescue may await. Update 7/11/2013 - Replaced the models that were removed from the game recently.
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Version 4 Complete