Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
Developer: Gearbox Software
Publisher: Valve
Genres: Action
Tags: 1990's Action Adventure Aliens Atmospheric Classic Co-op FPS First-Person Gore Great Soundtrack Military Moddable Puzzle Retro Sci-fi Shooter Silent Protagonist Singleplayer Story Rich
Release Date: Nov. 1, 1999
Reviews: 23251 (Overwhelmingly Positive)
Platforms: Windows Linux Mac
Languages: English, French, German, Korean
Steam Achievements: None
Estimated Sales: $3,480,674
Half-Life: Opposing Force on Steam
Categories: Adjustable Difficulty Custom Volume Controls Family Sharing Multi-player Playable without Timed Input Save Anytime Single-player Valve Anti-Cheat enabled
AppID: 50 (game) - 5 Screenshots, None Videos on store page.
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