How much revenue did Half-Life: Opposing Force make?

$2.5M–$6.8M after Steam's roughly 30% cut, derived from the copies estimate and its price.

How many copies did Half-Life: Opposing Force sell?

1.8M to 3.0M copies, based on its 29k Steam reviews. This is a labeled estimate from the review count, not exact sales.

Estimated copies sold: ≈ 1.8M–3.0M; $2.5M–$6.8M after Steam's cut $4.6M–$10.4M before Steam's cut; from 29k reviews (Overwhelmingly Positive)

Copies are estimated from the public review count, adjusted for release year, and cross-checked against SteamSpy's own estimate.

We don't have enough similar games to place Half-Life: Opposing Force in its genre yet. The numbers above are Half-Life: Opposing Force's own.

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