Half-Life: Opposing Force
Short description
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.
- Developer
- Gearbox Software
- Publisher
- Valve
- Release
- –
- Price
- $4.99
- Reviews
- 25,633
- Positive
- 96%
- Followers
- 12,304
- Owners (estimated)
- 2M – 5M
- Concurrent players
- 74
- Genres
- Action
- Features
- Multi-player, Custom Volume Controls, Adjustable Difficulty, Playable without Timed Input, Save Anytime, Valve Anti-Cheat enabled
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by $4.42, the average price these copies actually sold for — weighted from the price history rather than taken from the $4.99 launch price. That is 11% below list price on average. Before Steam's cut, VAT and refunds. How these numbers are calculated.
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Media
History
86 data points since Aug 10, 2026. Gaps mean nothing changed — the value carries forward.
The revenue curve is an estimate, not a measurement. It is the only calculated series here: each interval takes the review growth of that period, multiplies it by the sales-per-review factor and by the price actually charged at the time, and adds the result to the running total. That is why it climbs more slowly through discount periods than the review curve next to it. The last point is the same figure quoted above — gross, before Steam's cut, VAT and refunds. How these numbers are calculated.
The blurred area is the rest of the history. 296 further data points reach back to Nov 1, 2010 — your plan shows the last 90 days of it. How far each series in particular reaches is written on its own chart; not every one of them goes back that far. The shape in the blurred area is decoration, not data: the figures are not in this page at all. Plus unlocks the complete series.
Lowest recorded price: $0.49 on Jun 26, 2019.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with Half-Life: Opposing Force. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
Half-Life 2 | Valve 34 titles | 5 | − Shooter + Story Rich | $9.99 | 204,160 | 98% | Tue, Nov 16, 2004 | $88.9m $88.9m – $145m |
|
Half-Life: Blue Shift | Gearbox Software 18 titles | 5 | − Classic + Aliens | $4.99 | 18,797 | 93% | — | $4.4m $4.4m – $6.6m |
|
STAR WARS Republic Commando | LucasArts 36 titles | 5 | − Classic + Tactical | $9.99 | 14,717 | 96% | Wed, Jul 08, 2009 | $9.2m $9.2m – $10.8m |
|
Crysis 2 - Maximum Edition | Crytek Studios 2 titles | 5 | − Classic + Multiplayer | $29.99 | 9,358 | 86% | Tue, Mar 22, 2011 | $10.9m $4.8m – $51.6m |
|
DOOM 3 | id Software 24 titles | 5 | − Singleplayer + Horror | $9.99 | 9,180 | 86% | Mon, Oct 15, 2012 | $3.3m $1.5m – $16.1m |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.