PC (Microsoft Windows)November 10, 1999
Released ✓ 
RELEASES · DEALS · SUBSCRIPTIONS
Half-Life: Opposing Force
Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard, is sent in to neutralize the Black Mesa Research Facility after a scientific mishap causes it to be invaded by aliens, but quickly finds that the Marines are outnumbered and slowly being beaten back by a second alien race and black operations units.
ActionScience fictionThrillerWarfarePlatformPuzzleShooter
Game modes
MultiplayerSingle player
Player perspectives
First person
Prices
Release dates
PC (Microsoft Windows)November 15, 1999
Released ✓ 