Hi,

This is a Steam gift so I will send it to the winner via their email.

Half-Life: Opposing Force - 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.
The User Reviews are Overwhelmingly Positive and it features both single- player and multi-player gameplay.

Good luck everyone :)

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