Half-Life: Opposing Force

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Completion stage 0 Half-Life: Opposing Force | Table of Contents | Walkthrough

Half-Life: Opposing Force
Box artwork for Half-Life: Opposing Force.
Developer(s)Gearbox Software
Publisher(s)Sierra Entertainment (expired), Valve Corporation
EngineGoldSrc
Release date(s)
 October 31, 1999
Genre(s)FPS
System(s)Windows, Steam
Mode(s)Single player, multiplayer
Rating(s)
ESRB: Mature
ELSPA: Ages 15+
Preceded byHalf-Life
Followed byHalf-Life: Blue Shift
SeriesHalf-Life

Continue to:

Getting Started →
Walkthrough →

↓ Jump to Table of Contents ↓

Table of Contents

Getting Started
Walkthrough
  1. Welcome to Black Mesa
  2. We are Pulling Out
  3. Missing in Action
  4. Friendly Fire
  5. We are not Alone
  6. Crush Depth
  7. Vicarious Reality
  8. Pit Worm's Lair
  9. Foxtrot Uniform
  10. The Package
  11. Worlds Collide
Appendices
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