About game
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Release date
1999.11.01 (Steam)
1998.11.19. (Original)
Genre
ShooterPuzzleAdventureDeveloper
ValvePorting
Gearbox SoftwarePublisher
ValveSierra EntertainmentEngine
GoldSrcMode
Single PlayerMultiplayerPerspective
First PersonTheme
ActionScience FictionHorrorThrillerWarfareMore tags
Multiple EndingsConspiracySilent ProtagonistMilitaryAssassinAliens Challenges
Go to QuestNo challenges available for this game right now.
Rewards
Create your accountOfficial cover for Half-Life: Opposing Force on Steam
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