Half-Life: Opposing Force

Half-Life: Opposing Force is an expansion pack for the original first-person shooter Half-Life. The game setting is the same as the one in the original game: the story takes place in the science laboratory called Black Mesa Research Facility in New Mexico at the same time. However, instead of...

• Developer: Gearbox Software
• Publisher: Valve
• Released: 1999-11-19
• Genres: Action, Shooter

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