The Greatest PC Games of All Time

39. Half Life: Opposing Force

Half Life: Opposing Force puts you in the shoes of a Marine that is sent in to kill Gordon Freeman in Half Life. There is a lot to the story and it is a change of pace, allowing you to view the conflict from a different perspective. The graphics, sound and storyline are top notch and there is more to the game if we look a bit closer (though the lack of closure just makes us pine all the more).