Buy Half-Life: Opposing Force
According to COST.games Half-Life: Opposing Force can be purchased at Steam for $4.99.
The lowest price ever for Half-Life: Opposing Force is $0.49.
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Half-Life: Opposing Force review
488 users of Metacritic gave Half-Life: Opposing Force an average score of 8.5.
On Steam, 95% of the 20,386 players gave a positive rating.