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.

How long is Half-Life: Opposing Force?
When focusing on the main objectives, Half-Life: Opposing Force is about 5½ Hours in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 7 Hours to obtain 100% completion.