Half-Life: Opposing Force game cover

Half-Life: Opposing Force CD Key

Return to Black Mesa as a military specialist tasked with eliminating Gordon Freeman. Engage in a new single-player episode filled with intense action, fierce alien foes, and innovative weaponry. Winner of the Academy of Interactive Arts and Sciences' 'Game of the Year'.

Lowest Price

0.99$
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Release Date

01 Nov, 1999

Publisher/Developer

Gearbox Software, Valve

Reviews

Steam: 95.49% positive (23836/24963)
Metacritic: -

System Requirements

Minimum: 500 mhz processor, 96mb ram, 16mb video card, Windows XP, Mouse, Keyboard, Internet Connection

Recommended: 800 mhz processor, 128mb ram, 32mb+ video card, Windows XP, Mouse, Keyboard, Internet Connection

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Price Information for Half-Life: Opposing Force

Current Best Price: $0.99 at Steam

Game: Half-Life: Opposing Force

Platform: Steam

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Half-Life: Opposing Force Steam AI Review Summary

SteamAI
Summary generated from 300 most useful Steam user reviews.

Users wrote

Opposing Force is widely praised as a strong Half-Life expansion that adds a lot of new content through Adrian Shepard's perspective. It introduces many new weapons and enemies and expands the universe with fresh lore and locations. Reviewers often compare it favorably to Blue Shift and sometimes to HL1, though some criticisms include a short length, a lackluster final boss, and occasional bugs. Overall, most players feel it offers a high-quality, replayable experience for Half-Life fans.

Last updated: 2026-03-08

Most Mentioned Advantages

  • Many new weapons and enemies (28 mentions) - Adds a large variety of new weapons and aliens that refresh the combat and create new tactical options.
  • Fresh perspective from Adrian Shepard (26 mentions) - Tells the Black Mesa story from the military side, offering a different angle and expanding the Half-Life lore.
  • Strong story and lore expansion (22 mentions) - Expands the universe and ties into the original events, providing more context without overshadowing the base game.
  • Solid level design and variety (21 mentions) - Offers diverse locations and scenarios, including familiar Black Mesa areas recontextualized with new paths and puzzles.
  • Quality DLC that matches Half-Life's tone (18 mentions) - Many reviewers consider Opposing Force as a high-quality expansion, comparable to the base game in feel and momentum.

Most Mentioned Disadvantages

  • Bugs and glitches (22 mentions) - There are several bugs and occasional glitches that can disrupt progress.
  • Short campaign (21 mentions) - The length is short; some players finish quickly and desire more.
  • AI companions unreliable (12 mentions) - Allies can be inconsistent and sometimes fail to assist.
  • Balance or difficulty spikes (10 mentions) - Some sections feel too dense with enemies or unbalanced.
  • Final boss is underwhelming (9 mentions) - The final boss is often described as weak or less exciting.

Compared Games

  • Half-Life: Blue Shift (32 mentions) - Reviewers often say Opposing Force adds more content and is stronger than Blue Shift, while Blue Shift is shorter.
  • Half-Life (HL1) (14 mentions) - Many reviews claim Opposing Force is on par with HL1 in quality, with some preferring HL1, while others praise Opposing Force as a strong companion.
Users wrote

Advantages mentioned by the majority
Less frequently mentioned disadvantages


Half-Life: Opposing Force description

Half-Life: Opposing Force

Step back into the chaotic world of the Black Mesa Research Facility in Half-Life: Opposing Force, where you play as a military specialist sent with a mission to eliminate the enigmatic Gordon Freeman. This expansion pack offers a thrilling single-player experience filled with intense action and strategic gameplay.

As you navigate the treacherous environments of Black Mesa, prepare to confront a variety of formidable alien foes that will challenge your combat skills and tactical thinking. The game introduces an arsenal of new weaponry, allowing for diverse strategies to tackle the hordes of enemies that await.

Awarded 'Game of the Year' by the Academy of Interactive Arts and Sciences, Half-Life: Opposing Force delivers an engaging story that expands on the original game. Immerse yourself in a gripping narrative that intertwines with the fate of its iconic characters, while experiencing adrenaline-pumping gameplay that has captivated gamers worldwide. Whether you are a veteran of the series or a newcomer, this title promises to elevate your first-person shooter experience.