About game
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Release date
1970.01.01 (Xbox)
2009.11.17. (Original)
Genre
ShooterDeveloper
ValveTurtle Rock StudiosPublisher
ValveEngine
SourceMode
Single PlayerMultiplayerCo-operativePerspective
First PersonTheme
ActionHorrorSurvivalMore tags
ZombiesOnline Co-opSequel Achievement list
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