About game
Release date
10 Oct, 2007
Developer
ValvePublisher
ValveFeatures
Multi-playerCross-Platform MultiplayerSteam AchievementsSteam Trading CardsCaptions availableSteam WorkshopIn-App PurchasesPartial Controller SupportValve Anti-Cheat enabledStatsIncludes level editorCommentary availableRemote Play on PhoneRemote Play on TabletGenre
ActionFree to Play Achievement list
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